Color spaces
Base numbers
Binary
Octal
Decimal
Hex
Usage highlights
Interactive tools
Build palettes and validate contrast on the fly
Drop favorite swatches into a custom stack, then test new text/background combos without leaving the page.
Derived palettes
Shades, tints and harmonies
Generate system-ready palettes directly from the source swatch. Each tone carries HEX and contextual tags.
Shades
Depth controlTints
UI backgroundsTriadic
Balanced accentsAnalogous
Gradient-readyComplementary
Contrast anchorMonochromatic
Data vizCode snippets
Drop into CSS, Tailwind or design tokens
Component tokens
:root {
--color-hex-55d871: #55D871;
}
.btn-color {
background: var(--color-hex-55d871);
color: #f8fafc;
box-shadow: 0 10px 25px rgba(85, 216, 113, 0.25);
}
Design token extend
module.exports = {
theme: {
extend: {
colors: {
hex55d871: '#55D871',
hex55d871Tint: '#71DE88',
},
},
},
};
Shadow presets
.text-color-55d871 {
color: #55D871;
text-shadow: 4px 4px 2px rgba(85, 216, 113, 0.8);
}
.panel-color-55d871 {
border: 3px solid #55D871;
box-shadow: 1px 1px 3px 2px #55D871;
}
Accessibility lab
See the swatch on contrasting surfaces
Compare how #55D871 behaves in light dashboards, dark terminals and mixed layouts. Ratios are based on WCAG 2.1 calculations at 100% opacity.
Mission control confirms calm seas.
- Usage: body copy, data labels.
- Background: #e6eaeb shell.
- Min size: 16px regular, 14px bold.
Vector shields aligned. Engage warp.
- Usage: hero headings, CTA outlines.
- Background: #0f172a cockpit.
- Min size: 12px icons, 18px type.
Pairing matrix
| Background | #55D871 text | #f8fafc text |
|---|---|---|
| #e6eaeb | AA | N/A |
| #0f172a | AAA | AA |
| #050505 | AAA | AA |
Swap to #f97316 text on dark shells to push CTA contrast to 9.4:1.
Recommended supporting neutrals: