What font does Sideline use?

Sideline’s website uses one typeface: Aileron (headings and body text), self-hosted.

What are Sideline’s brand colours?

The main colours on sideline.com are Light Steel Blue (#337AB7), Lime Green (#00C250), Dark Olive Green (#3C763D), Dark Golden Rod (#8A6D3B), Brown (#A94442) and Deep Steel Blue (#31708F).

What colour is Sideline’s text and background?

Body text is #666666 on a #FFFFFF background.

Is this Sideline’s official style guide?

No. SiteStyleGuide made it from sideline.com’s public web pages on 22 October 2026, and isn’t affiliated with Sideline. Members can refresh a guide after 90 days to pick up changes.

Unofficial A style guide made by SiteStyleGuide from sideline.com’s public web pages. Not affiliated with or endorsed by Sideline. The real site is sideline.com ↗

Unofficial style guide

Sidelinestyle guide

Sideline’s website (sideline.com) uses Aileron for its headings and body text. Its palette is led by Light Steel Blue (#337AB7), Lime Green (#00C250) and Dark Olive Green (#3C763D), with #666666 text on #FFFFFF. Captured from the live site on 22 October 2026.

Website: sideline.com
Typefaces: Aileron, Helvetica Neue
Palette: 4 neutrals, 12 colours, 3 gradients
Captured: 22 Oct 2026 · added by @sitestyleguide

Save Add to collection Share Report

Screenshot of the sideline.com homepage on a desktop screen — Screenshot of sideline.com on a 1440 px desktop screen, 22 Oct 2026.

Screenshot of the sideline.com homepage on a phone — On a phone, 390 px.

Identity & metadata

What browsers, search engines and social cards show before anyone reaches the page, from the homepage’s <head>.

Title &
description

Page title: Your Phone’s Other Number | Sideline; ● 36 / 60 characters
Meta description: The easiest way to organize your communication on one device.; ● 61 / 160 characters
Site name: Sideline
og:title: Sideline | Your Phone's Other Number
og:description: Organize your communication, separate contacts, and put your phone to work with powerful texting tools—all on Sideline.
Language: en-US

In search results

Sidelinehttps://www.sideline.com/

Your Phone’s Other Number | Sideline

The easiest way to organize your communication on one device.

When shared

sideline.com

Sideline | Your Phone's Other Number

Organize your communication, separate contacts, and put your phone to work with powerful texting tools—all on…

Logo & favicons

No logo could be found on the homepage.

Logo

Favicons

1 found

96 px · ICO shortcut icon

Your Phone’s Other Number | Sideline

Light browser tab

Your Phone’s Other Number | Sideline

Dark browser tab

Colour

Read from the site’s stylesheets and weighted by where each colour is used. Names are the nearest standard colour name. Click a swatch to copy its hex code.

Contrast is against the site’s text colour (#666666) and white, using WCAG 2 ratios: 4.5 for body text, 3 for large text.

Colour

Balance

How much each colour is used

White 36.5%
Near Black 19.2%
Charcoal 6.4%
Off White 6.3%
Light Steel Blue 5.2%
Lime Green 5.1%
Dark Olive Green 2.9%
Dark Golden Rod 2.9%
Brown 2.9%
Deep Steel Blue 2.3%
Corn Silk 2.1%
Honey Dew 1.8%
Sky Blue 1.7%
Fire Brick 1.7%
Medium Sea Green 1.5%
Orange 1.4%

By how often each colour appears in the site’s CSS, weighted by where (body, headings, buttons), not by area on the screen.

Neutrals

Text, backgrounds and structure

White

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 0

On text
5.74:1 AA

On white
—

Background, text, border · body, #header2018 #desktop2018 #menu-links #menu-logindd #menu-login2018
Near Black

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 93

On text
3.29:1 AA large

On white
18.88:1 AAA

Text, background, border · h1, .each-story h3
Charcoal

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 80

On text
2.20:1 Fail

On white
12.63:1 AAA

Text, background, border · body, BODY
Off White

HEX

RGB

HSL

OKLCH

CMYK
0 0 0 13

On text
4.23:1 AA large

On white
1.36:1 Fail

Border, background · .nav .nav-divider, .navbar-default .navbar-toggle:focus

Colours

Brand colours and accents, most used first

Light Steel Blue

HEX

RGB

HSL

OKLCH

CMYK
72 33 0 28

On text
1.26:1 Fail

On white
4.56:1 AA

Background, text, border · .panel-primary>.panel-heading, .btn-primary
Lime Green

HEX

RGB

HSL

OKLCH

CMYK
100 0 59 24

On text
2.42:1 Fail

On white
2.38:1 Fail

Text, border, background · #page #header ul.menu li.current-menu-item a, #page .store-link.btn
Dark Olive Green

HEX

RGB

HSL

OKLCH

CMYK
49 0 48 54

On text
1.05:1 Fail

On white
5.45:1 AA

Text, background, border · .panel-success>.panel-heading .badge, .panel-success>.panel-heading
Dark Golden Rod

HEX

RGB

HSL

OKLCH

CMYK
0 21 57 46

On text
1.18:1 Fail

On white
4.85:1 AA

Text, background, border · .panel-warning>.panel-heading .badge, .panel-warning>.panel-heading
Brown

HEX

RGB

HSL

OKLCH

CMYK
0 60 61 34

On text
1.02:1 Fail

On white
5.85:1 AA

Text, background, border · .panel-danger>.panel-heading .badge, .panel-danger>.panel-heading
Deep Steel Blue

HEX

RGB

HSL

OKLCH

CMYK
66 22 0 44

On text
1.05:1 Fail

On white
5.46:1 AA

Text, background, border · .panel-info>.panel-heading .badge, .panel-info>.panel-heading
Corn Silk

HEX

RGB

HSL

OKLCH

CMYK
0 2 10 1

On text
5.38:1 AA

On white
1.07:1 Fail

Background, text · .panel-warning>.panel-heading, .panel-warning>.panel-heading .badge
Honey Dew

HEX

RGB

HSL

OKLCH

CMYK
7 0 10 6

On text
4.81:1 AA

On white
1.19:1 Fail

Background, text · .panel-success>.panel-heading, .panel-success>.panel-heading .badge
Sky Blue

HEX

RGB

HSL

OKLCH

CMYK
59 14 0 13

On text
2.74:1 Fail

On white
2.09:1 Fail

Background, text, border · .btn-info, .btn-info .badge
Fire Brick

HEX

RGB

HSL

OKLCH

CMYK
0 77 81 20

On text
1.09:1 Fail

On white
5.25:1 AA

Background, text, border · div.benefits-team-number h6.quote, .carousel-block.kidstance .carousel-cta
Medium Sea Green

HEX

RGB

HSL

OKLCH

CMYK
50 0 50 28

On text
2.31:1 Fail

On white
2.48:1 Fail

Background, text, border · .btn-success, .btn-success .badge
Orange

HEX

RGB

HSL

OKLCH

CMYK
0 28 68 6

On text
2.95:1 Fail

On white
1.95:1 Fail

Background, text · .btn-warning, .btn-warning .badge

Gradients

linear-gradient(45deg,rgba(255,255,255,.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.15) 50%,rgba(255,255,255,.15) 75%,transparent 75%,transparent)
linear-gradient(left,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%)
linear-gradient(left,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%)

Typography

Faces from Google Fonts are shown in the real thing. Others are licensed to the site, so they show in your device’s copy if you have one, or a stand-in if not.

Aileron

Aa 100 Aa 900

Aileron

Self-hosted · weights 100, 200, 300, 400, 600, 700, 800, 900 · headings, body · shown in a stand-in if you don’t have it

Aa 400

Helvetica Neue

System font, or not loaded on this page · weights 400 · body · shown in a stand-in if you don’t have it

ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
0123456789 ! ? & @ % $ – ’ “ ”

Type scale

From the site’s CSS · root 10 px

Heading 1 22px / 1.4 weight 900 · Aileron

Sideline

Heading 2 28px / 1.4 weight 900 · Aileron

Your Phone’s Other Number | Sideline

Heading 3 22px / 1.4 weight 900 · Aileron

Your Phone’s Other Number | Sideline

Heading 4 16px / 1.4 weight 900 · Aileron

Your Phone’s Other Number | Sideline

Heading 5 16px / 1.4 weight 900 · Aileron

Your Phone’s Other Number | Sideline

Heading 6 16px / 1.1 weight 500

Your Phone’s Other Number | Sideline

Body 16px / 1.4 weight 400 · Aileron

The easiest way to organize your communication on one device.

Paragraph 1.8rem · 18 px / 1.6 weight 400

The easiest way to organize your communication on one device.

Small 85%

The easiest way to organize your communication on one device.

Button .9em · 9 px / 17px weight 700 · uppercase

Get started

Link 1.6rem · 16 px / 1.4 weight 400 · uppercase

Sizes in use

Most common across the site

22pxline 1.6em · 7 rules
20pxline 1.5 · 8 rules
18pxline 1.3333333 · 17 rules
16pxline 1.4 · 29 rules
14pxline 1.42857143 · 24 rules
13pxline 1.42857143 · 5 rules
12pxline 1.5 · 21 rules
10pxline normal · 7 rules

Elements

The main button and link as the site’s CSS draws them, and the corner radii and shadows it uses most.

Elements

Button

Get started

.btn-primary · #337AB7

Link

Read our latest news today.

a · #337AB7

Corner radius

4px · 26×
6px · 12×
5px · 12×
3px · 8×
8px · 4×
50% · 3×

Shadows

0 0 12px rgba(0,0,0,.25)
0 6px 12px rgba(0,0,0,.175)
0 1px 1px rgba(0,0,0,.05)
0 3px 9px rgba(0,0,0,.5)

Layout

Breakpoints from the site’s media queries and the widths its content is held to, with how often each appears.

Grid

Breakpoints

767

768

769

991

992

1024

1199

1200

On a scale of 0 to 1440 px.

Content widths (max-width)

1100 px

700 px

580 px

470 px

400 px

300 px

Notes

Plain checks on what was found. Worth fixing if you look after this site.

Notes

● FineThe title is 36 characters, short enough to show in full in search results.

Questions

Quick answers, from the same capture as the rest of this guide.

Questions

What font does Sideline use?: Sideline’s website uses one typeface: Aileron (headings and body text), self-hosted.
What are Sideline’s brand colours?: The main colours on sideline.com are Light Steel Blue (#337AB7), Lime Green (#00C250), Dark Olive Green (#3C763D), Dark Golden Rod (#8A6D3B), Brown (#A94442) and Deep Steel Blue (#31708F).
What colour is Sideline’s text and background?: Body text is #666666 on a #FFFFFF background.
Is this Sideline’s official style guide?: No. SiteStyleGuide made it from sideline.com’s public web pages on 22 October 2026, and isn’t affiliated with Sideline. Members can refresh a guide after 90 days to pick up changes.

Design tokens

Everything above as CSS variables, ready to paste into a project. Members can download the tokens as files for Figma (Tokens Studio), Style Dictionary and Tailwind.

Tokens

sideline-com-tokens.css

Download

Free with an account: sign up or sign in, and you’ll come straight back here.

/* sideline.com design tokens, from SiteStyleGuide (https://sitestyleguide.com/sideline.com) */
:root {
  /* Colours */
  --text: #666666;
  --background: #FFFFFF;
  --colour-white: #FFFFFF;
  --colour-near-black: #111111;
  --colour-charcoal: #333333;
  --colour-off-white: #DDDDDD;
  --colour-light-steel-blue: #337AB7;
  --colour-lime-green: #00C250;
  --colour-dark-olive-green: #3C763D;
  --colour-dark-golden-rod: #8A6D3B;
  --colour-brown: #A94442;
  --colour-deep-steel-blue: #31708F;
  --colour-corn-silk: #FCF8E3;
  --colour-honey-dew: #DFF0D8;
  --colour-sky-blue: #5BC0DE;
  --colour-fire-brick: #CC2F26;
  --colour-medium-sea-green: #5CB85C;
  --colour-orange: #F0AD4E;
  --gradient-1: linear-gradient(45deg,rgba(255,255,255,.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.15) 50%,rgba(255,255,255,.15) 75%,transparent 75%,transparent);
  --gradient-2: linear-gradient(left,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%);
  --gradient-3: linear-gradient(left,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%);

  /* Typefaces */
  --font-headings: 'Aileron', 'Helvetica', 'Arial', sans-serif;
  --font-body: 'Aileron', 'Helvetica', 'Arial', sans-serif;

  /* Type scale */
  --text-h1: 22px;
  --leading-h1: 1.4;
  --text-h2: 28px;
  --leading-h2: 1.4;
  --text-h3: 22px;
  --leading-h3: 1.4;
  --text-h4: 16px;
  --leading-h4: 1.4;
  --text-h5: 16px;
  --leading-h5: 1.4;
  --text-h6: 16px;
  --leading-h6: 1.1;
  --text-body: 16px;
  --leading-body: 1.4;
  --text-p: 1.8rem;
  --leading-p: 1.6;
  --text-small: 85%;
  --text-button: .9em;
  --leading-button: 17px;
  --text-a: 1.6rem;
  --leading-a: 1.4;

  /* Shape */
  --radius-1: 4px;
  --radius-2: 6px;
  --radius-3: 5px;
  --radius-4: 3px;
  --radius-5: 8px;
  --radius-6: 50%;

  /* Layout (breakpoints can’t be used in media queries as variables; they’re here for reference) */
  --breakpoint-1: 767px;
  --breakpoint-2: 768px;
  --breakpoint-3: 769px;
  --breakpoint-4: 991px;
  --breakpoint-5: 992px;
  --breakpoint-6: 1024px;
  --breakpoint-7: 1199px;
  --breakpoint-8: 1200px;
  --max-width-1: 1100px;
  --max-width-2: 700px;
  --max-width-3: 580px;
  --max-width-4: 470px;
  --max-width-5: 400px;
  --max-width-6: 300px;
}

{
    "site": "sideline.com",
    "source": "https://sitestyleguide.com/sideline.com",
    "text": "#666666",
    "background": "#FFFFFF",
    "colours": [
        {
            "name": "White",
            "hex": "#FFFFFF",
            "rgb": [
                255,
                255,
                255
            ]
        },
        {
            "name": "Near Black",
            "hex": "#111111",
            "rgb": [
                17,
                17,
                17
            ]
        },
        {
            "name": "Charcoal",
            "hex": "#333333",
            "rgb": [
                51,
                51,
                51
            ]
        },
        {
            "name": "Off White",
            "hex": "#DDDDDD",
            "rgb": [
                221,
                221,
                221
            ]
        },
        {
            "name": "Light Steel Blue",
            "hex": "#337AB7",
            "rgb": [
                51,
                122,
                183
            ]
        },
        {
            "name": "Lime Green",
            "hex": "#00C250",
            "rgb": [
                0,
                194,
                80
            ]
        },
        {
            "name": "Dark Olive Green",
            "hex": "#3C763D",
            "rgb": [
                60,
                118,
                61
            ]
        },
        {
            "name": "Dark Golden Rod",
            "hex": "#8A6D3B",
            "rgb": [
                138,
                109,
                59
            ]
        },
        {
            "name": "Brown",
            "hex": "#A94442",
            "rgb": [
                169,
                68,
                66
            ]
        },
        {
            "name": "Deep Steel Blue",
            "hex": "#31708F",
            "rgb": [
                49,
                112,
                143
            ]
        },
        {
            "name": "Corn Silk",
            "hex": "#FCF8E3",
            "rgb": [
                252,
                248,
                227
            ]
        },
        {
            "name": "Honey Dew",
            "hex": "#DFF0D8",
            "rgb": [
                223,
                240,
                216
            ]
        },
        {
            "name": "Sky Blue",
            "hex": "#5BC0DE",
            "rgb": [
                91,
                192,
                222
            ]
        },
        {
            "name": "Fire Brick",
            "hex": "#CC2F26",
            "rgb": [
                204,
                47,
                38
            ]
        },
        {
            "name": "Medium Sea Green",
            "hex": "#5CB85C",
            "rgb": [
                92,
                184,
                92
            ]
        },
        {
            "name": "Orange",
            "hex": "#F0AD4E",
            "rgb": [
                240,
                173,
                78
            ]
        }
    ],
    "fonts": [
        {
            "name": "Aileron",
            "stack": "\"Aileron\", Helvetica, Arial, sans-serif",
            "weights": [
                100,
                200,
                300,
                400,
                600,
                700,
                800,
                900
            ],
            "source": "Self-hosted"
        },
        {
            "name": "Helvetica Neue",
            "stack": "\"Helvetica Neue\", Helvetica, Arial, sans-serif",
            "weights": [
                400
            ],
            "source": "System font, or not loaded on this page"
        }
    ]
}

Websites whose lead colour is closest to Sideline’s

Sublime Text

sublimetext.com · 4 days ago
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The New Yorker

newyorker.com · 19 hours ago
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vk.me

vk.me · 4 days ago
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cnnic.cn

cnnic.cn · 1 day ago
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Captured from sideline.com on 22 October 2026. SiteStyleGuide isn’t affiliated with or endorsed by Sideline; this guide describes the public website for reference.

Sidelinestyle guide

Title &description

Logo

Favicons

Colour

Balance

Neutrals

White

Near Black

Charcoal

Off White

Colours

Light Steel Blue

Lime Green

Dark Olive Green

Dark Golden Rod

Brown

Deep Steel Blue

Corn Silk

Honey Dew

Sky Blue

Fire Brick

Medium Sea Green

Orange

Gradients

Aileron

Type scale

Sizes in use

Elements

Grid

Notes

Questions

Tokens

Share

Run sideline.com?

Similar colours

Sublime Text

The New Yorker

vk.me

cnnic.cn

Title &
description