Indigo Color Palette
Indigo Color Palette built around #4B0082, a dark cool purple anchor (WCAG contrast 1.62:1 against black). The set combines a light tint + a deep shade + a softened complement + a neutral ground so any palette position has a text-safe pairing.
Semantic roles
Assigned deterministically: lightest = background, darkest = text, most saturated = primary.
| background | #C5A1DC | |
| surface | #3C651D | |
| text | #2E0054 | |
| text-muted | #4B0082 | |
| primary | #4B0082 | |
| secondary | #3C651D | |
| accent | #5F238E |
CSS variables
:root {
--background: #c5a1dc;
--surface: #3c651d;
--text: #2e0054;
--text-muted: #4b0082;
--primary: #4b0082;
--secondary: #3c651d;
--accent: #5f238e;
}Accessibility matrix
Text color (rows) on background (columns). Green = WCAG AA pass for normal text (≥4.5:1).
| Text \ BG | #4B0082 | #C5A1DC | #2E0054 | #3C651D | #5F238E |
|---|---|---|---|---|---|
| #4B0082 | 1.0 | 5.9 | 1.3 | 1.9 | 1.3 |
| #C5A1DC | 5.9 | 1.0 | 7.6 | 3.1 | 4.5 |
| #2E0054 | 1.3 | 7.6 | 1.0 | 2.5 | 1.7 |
| #3C651D | 1.9 | 3.1 | 2.5 | 1.0 | 1.4 |
| #5F238E | 1.3 | 4.5 | 1.7 | 1.4 | 1.0 |
Under deuteranopia
Machado et al. (2009) simulation, severity 1.0 — approximation, not a medical tool.
Colors in this palette
Similar palettes
FAQ
How do I use the indigo color palette in CSS?
Copy the CSS variables below into :root and use var(--primary), var(--background) etc. Full palette: #4B0082, #C5A1DC, #2E0054, #3C651D, #5F238E.
Do these colors pass accessibility checks?
See the WCAG matrix on this page: every text-on-background pairing with ratio ≥ 4.5 passes AA for normal text; ≥ 3 passes AA for large text and UI components.