Slate Blue Color Palette
Slate Blue Color Palette built around #6A5ACD, a dark cool blue anchor (WCAG contrast 3.96:1 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 | #CEBEF9 | |
| surface | #AAB374 | |
| text | #362D7A | |
| text-muted | #6A5ACD | |
| primary | #6A5ACD | |
| secondary | #AAB374 | |
| accent | #7B69D2 |
CSS variables
:root {
--background: #cebef9;
--surface: #aab374;
--text: #362d7a;
--text-muted: #6a5acd;
--primary: #6a5acd;
--secondary: #aab374;
--accent: #7b69d2;
}Accessibility matrix
Text color (rows) on background (columns). Green = WCAG AA pass for normal text (≥4.5:1).
| Text \ BG | #6A5ACD | #CEBEF9 | #362D7A | #AAB374 | #7B69D2 |
|---|---|---|---|---|---|
| #6A5ACD | 1.0 | 3.1 | 2.2 | 2.4 | 1.2 |
| #CEBEF9 | 3.1 | 1.0 | 6.8 | 1.3 | 2.6 |
| #362D7A | 2.2 | 6.8 | 1.0 | 5.2 | 2.6 |
| #AAB374 | 2.4 | 1.3 | 5.2 | 1.0 | 2.0 |
| #7B69D2 | 1.2 | 2.6 | 2.6 | 2.0 | 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 slate blue color palette in CSS?
Copy the CSS variables below into :root and use var(--primary), var(--background) etc. Full palette: #6A5ACD, #CEBEF9, #362D7A, #AAB374, #7B69D2.
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.