SiteStyleGuide

Unofficial A style guide made by SiteStyleGuide from rapidtables.com’s public web pages. Not affiliated with or endorsed by Online Calculators & Tools. The real site is rapidtables.com ↗

Unofficial style guide

Online Calculators & Toolsstyle guide

Online Calculators & Tools’s website (rapidtables.com) uses Segoe UI for its headings and body text. Its palette is led by Light Royal Blue (#0D6EFD), Sea Green (#198754) and Crimson (#DC3545), with #212529 text on #FFFFFF. Captured from the live site on 25 October 2026.

Typefaces
Segoe UI, Arial, Courier New
Palette
4 neutrals, 12 colours, 2 gradients
Captured
25 Oct 2026 · added by @sitestyleguide
https://www.rapidtables.com/ Screenshot
Screenshot of the rapidtables.com homepage on a desktop screen
Screenshot of rapidtables.com on a 1440 px desktop screen, 25 Oct 2026.

Identity & metadata

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

Title &
description

Page title
Online Calculators & Tools - RapidTables.com
● 44 / 60 characters
Meta description
Online reference and tools - calculators, converters, math, electricity, web design
● 83 / 160 characters
Language
en
Theme colour
#ffffff

In search results

Online Calculators & Toolshttps://www.rapidtables.com/

Online Calculators & Tools - RapidTables.com

Online reference and tools - calculators, converters, math, electricity, web design

When shared

No og:image, so no picture

rapidtables.com

Online Calculators & Tools - RapidTables.com

Online reference and tools - calculators, converters, math, electricity, web design

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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 (#212529) and white, using WCAG 2 ratios: 4.5 for body text, 3 for large text.

Colour

Balance

How much each colour is used
  • White 26%
  • Black 19.6%
  • Light Royal Blue 8.2%
  • Cool Near Black 7.5%
  • Off White 7.3%
  • Sea Green 6%
  • Crimson 5.5%
  • Gold 5.2%
  • Sky Blue 5.2%
  • Beige 1.6%
  • Deep Royal Blue 1.5%
  • Dark Green 1.3%
  • Corn Silk 1.3%
  • Dark Slate Blue 1.3%
  • Brown 1.2%
  • Light Steel Blue 0.9%

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
    15.43:1 AAA
    On white
    —

    Background, text, theme · --bs-btn-hover-color, --bs-btn-active-color

  • Black

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 0 0 100
    On text
    1.36:1 Fail
    On white
    21.00:1 AAA

    Text, background, border · --bs-table-color, --bs-table-striped-color

  • Cool Near Black

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    20 10 0 84
    On text
    —
    On white
    15.43:1 AAA

    Text, background, graphic · body, --bs-btn-border-color

  • Off White

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 0 0 12
    On text
    11.69:1 AAA
    On white
    1.32:1 Fail

    Background, border · #rcol H5, .calc

Colours

Brand colours and accents, most used first
  • Light Royal Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    95 57 0 1
    On text
    3.43:1 AA large
    On white
    4.50:1 AA

    Text, background, graphic · a, --bs-btn-border-color

  • Sea Green

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    81 0 38 47
    On text
    3.40:1 AA large
    On white
    4.53:1 AA

    Background, text, border · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Crimson

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 76 69 14
    On text
    3.41:1 AA large
    On white
    4.53:1 AA

    Background, text, border · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Gold

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 24 97 0
    On text
    9.46:1 AAA
    On white
    1.63:1 Fail

    Background, text, graphic · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Sky Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    95 16 0 6
    On text
    7.88:1 AAA
    On white
    1.96:1 Fail

    Background, text, graphic · --bs-btn-border-color, --bs-btn-disabled-border-color

  • Beige

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 0 13 6
    On text
    13.28:1 AAA
    On white
    1.16:1 Fail

    Background · #header, #nav a:hover

  • Deep Royal Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    95 56 0 21
    On text
    2.40:1 Fail
    On white
    6.44:1 AA

    Text, graphic · --bs-link-hover-color, --bs-btn-hover-border-color

  • Dark Green

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    81 0 38 58
    On text
    2.39:1 Fail
    On white
    6.45:1 AA

    Background, text, graphic · --bs-btn-hover-border-color, --bs-btn-active-bg

  • Corn Silk

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 5 20 0
    On text
    13.92:1 AAA
    On white
    1.11:1 Fail

    Background · --bs-warning-bg-subtle, --bs-highlight-bg

  • Dark Slate Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    94 57 0 45
    On text
    1.52:1 Fail
    On white
    10.18:1 AAA

    Text · a:link, a:visited

  • Brown

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    0 76 69 31
    On text
    2.37:1 Fail
    On white
    6.50:1 AA

    Text, graphic · --bs-btn-hover-border-color, --bs-btn-active-bg

  • Light Steel Blue

    HEX
    RGB
    HSL
    OKLCH
    CMYK
    19 11 0 0
    On text
    11.74:1 AAA
    On white
    1.31:1 Fail

    Background · --bs-primary-bg-subtle, --bs-table-bg

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(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0))

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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.

Segoe UI

Aa 400

Segoe UI

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

Aa 400

Arial

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

Aa 400

Courier New

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

Aa 400

Times New Roman

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

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

Type scale

From the site’s CSS
Heading 1 1.6rem · 26 px / 1.2 weight 500

Online Calculators & Tools

Heading 2 1.4rem · 22 px / 1.2 weight 500

Online Calculators & Tools - RapidTables.com

Heading 3 calc(1.3rem + .6vw) / 1.2 weight 500

Online Calculators & Tools - RapidTables.com

Heading 4 1.2rem · 19 px / 1.2 weight 500

Online Calculators & Tools - RapidTables.com

Heading 5 1.25rem · 20 px / 1.2 weight 500

Online Calculators & Tools - RapidTables.com

Heading 6 1rem · 16 px / 1.2 weight 500

Online Calculators & Tools - RapidTables.com

Body 1rem · 16 px / 1.5 weight 400 · Segoe UI

Online reference and tools - calculators, converters, math, electricity, web design

Paragraph x-large / 1.8 weight 700

Online reference and tools - calculators, converters, math, electricity, web design

Small .875em · 14 px

Online reference and tools - calculators, converters, math, electricity, web design

Link 1rem · 16 px / 2 weight 700

Read more about Online Calculators & Tools

Sizes in use

Most common across the site
  • 26px2 rules
  • 22px3 rules
  • 20px8 rules
  • 19px4 rules
  • 18px2 rules
  • 16pxline 1.5 · 20 rules
  • 15px1 rules
  • 14px19 rules

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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

#fdbk .btn · #6C757D · radius .25rem

Link

Read our latest news today.

a · #083D8D

Corner radius

  • 0.375rem · 13×
  • 1rem · 5×
  • 0.25rem · 4×
  • 0.5rem · 4×
  • .25rem · 3×

Shadows

  • 0 0 0 .25rem rgba(13,110,253,.25)
  • 0 0 0 .25rem rgba(25,135,84,.25)
  • 0 0 0 .25rem rgba(220,53,69,.25)

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Layout

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

Grid

Breakpoints

320
576
768
799
800
992
1200
1400

On a scale of 0 to 1440 px.

Content widths (max-width)

1000 px
720 px
650 px
540 px
500 px
320 px

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Notes

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

Notes

  • ● FineThe title is 44 characters, short enough to show in full in search results.
  • ▲ CheckThere is no og:image, so links shared on social media show no picture.

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Questions

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

Questions

What font does Online Calculators & Tools use?
Online Calculators & Tools’s website uses one typeface: Segoe UI (headings and body text), a system font.
What are Online Calculators & Tools’s brand colours?
The main colours on rapidtables.com are Light Royal Blue (#0D6EFD), Sea Green (#198754), Crimson (#DC3545), Gold (#FFC107), Sky Blue (#0DCAF0) and Beige (#F0F0D0).
What colour is Online Calculators & Tools’s text and background?
Body text is #212529 on a #FFFFFF background.
Is this Online Calculators & Tools’s official style guide?
No. SiteStyleGuide made it from rapidtables.com’s public web pages on 25 October 2026, and isn’t affiliated with Online Calculators & Tools. Members can refresh a guide after 90 days to pick up changes.

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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

rapidtables-com-tokens.css

Download

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

/* rapidtables.com design tokens, from SiteStyleGuide (https://sitestyleguide.com/rapidtables.com) */
:root {
  /* Colours */
  --text: #212529;
  --background: #FFFFFF;
  --colour-white: #FFFFFF;
  --colour-black: #000000;
  --colour-cool-near-black: #212529;
  --colour-off-white: #E0E0E0;
  --colour-light-royal-blue: #0D6EFD;
  --colour-sea-green: #198754;
  --colour-crimson: #DC3545;
  --colour-gold: #FFC107;
  --colour-sky-blue: #0DCAF0;
  --colour-beige: #F0F0D0;
  --colour-deep-royal-blue: #0A58CA;
  --colour-dark-green: #146C43;
  --colour-corn-silk: #FFF3CD;
  --colour-dark-slate-blue: #083D8D;
  --colour-brown: #B02A37;
  --colour-light-steel-blue: #CFE2FF;
  --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(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));

  /* Typefaces */
  --font-body: system-ui, -apple-system, 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Noto Sans';
  --font-other: 'Courier New';

  /* Type scale */
  --text-h1: 1.6rem;
  --leading-h1: 1.2;
  --text-h2: 1.4rem;
  --leading-h2: 1.2;
  --text-h3: calc(1.3rem + .6vw);
  --leading-h3: 1.2;
  --text-h4: 1.2rem;
  --leading-h4: 1.2;
  --text-h5: 1.25rem;
  --leading-h5: 1.2;
  --text-h6: 1rem;
  --leading-h6: 1.2;
  --text-body: 1rem;
  --leading-body: 1.5;
  --text-p: x-large;
  --leading-p: 1.8;
  --text-small: .875em;
  --text-a: 1rem;
  --leading-a: 2;

  /* Shape */
  --radius-1: 0.375rem;
  --radius-2: 1rem;
  --radius-3: 0.25rem;
  --radius-4: 0.5rem;
  --radius-5: .25rem;

  /* Layout (breakpoints can’t be used in media queries as variables; they’re here for reference) */
  --breakpoint-1: 320px;
  --breakpoint-2: 576px;
  --breakpoint-3: 768px;
  --breakpoint-4: 799px;
  --breakpoint-5: 800px;
  --breakpoint-6: 992px;
  --breakpoint-7: 1200px;
  --breakpoint-8: 1400px;
  --max-width-1: 1000px;
  --max-width-2: 720px;
  --max-width-3: 650px;
  --max-width-4: 540px;
  --max-width-5: 500px;
  --max-width-6: 320px;
}

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Other websites using Segoe UI as their main typeface
Websites whose lead colour is closest to Online Calculators & Tools’s

Captured from rapidtables.com on 25 October 2026. SiteStyleGuide isn’t affiliated with or endorsed by Online Calculators & Tools; this guide describes the public website for reference.