Primary#232F3C
Main brand colour. Use for headers, navigation, and primary buttons.
Secondary#512F50
Companion colour. Use for links, highlights, and hover states.
Tertiary#51402F
Accent colour. Use for highlights, charts, and callouts.
Quaternary#2F5130
Accent colour. Use sparingly for calls to action and warnings.
Neutral#4B5968
Tinted neutral drawn from the seed hue. Use for body text, borders, and backgrounds.
Use Override under a companion colour to replace it with your own. The URL updates so you can share the result. Click a swatch to copy its hex code. Badges show WCAG contrast against white text and against dark text (#0F2A3F). AAA is 7:1 or higher. AA is 4.5:1 or higher. AA large is 3:1 or higher.
In use
Sample components show how the colours work together.
Buttons
Primary action Secondary Outline Call to action ConfirmNavigation
Dark slate greyWorkServicesAboutContact
Alerts
Information uses the secondary colour.
Success uses tertiary.
Warnings use quaternary.
Typography
Heading in primary
Body copy in neutral 500 on a white card. This keeps long text easy to read.
Muted caption text in neutral 300.
Links use primary 500Dark surface
Primary 900 works as a footer or hero background. Secondary 300 gives headings lift without glare.
Get startedChart colours
Export as CSS variables
Copy this block into your stylesheet, or link to 232f3c-tetrad.css and 232f3c-tetrad.json.
:root {
--primary-50: #E9EAEC;
--primary-100: #BDC1C4;
--primary-300: #7B828A;
--primary-500: #232F3C;
--primary-700: #1A232D;
--primary-900: #12181E;
--secondary-50: #EEEAEE;
--secondary-100: #CBC1CA;
--secondary-300: #978296;
--secondary-500: #512F50;
--secondary-700: #3D233C;
--secondary-900: #281828;
--tertiary-50: #EEECEA;
--tertiary-100: #CBC6C1;
--tertiary-300: #978C82;
--tertiary-500: #51402F;
--tertiary-700: #3D3023;
--tertiary-900: #282018;
--quaternary-50: #EAEEEA;
--quaternary-100: #C1CBC1;
--quaternary-300: #829783;
--quaternary-500: #2F5130;
--quaternary-700: #233D24;
--quaternary-900: #182818;
--neutral-50: #EDEEF0;
--neutral-100: #C9CDD2;
--neutral-300: #939BA4;
--neutral-500: #4B5968;
--neutral-700: #38434E;
--neutral-900: #262C34;
}
Steps 50 to 300 are tints. Step 500 is the base colour. Steps 700 and 900 are shades.