#5151cc
#5151cc converts to rgb(81, 81, 204) and hsl(240, 55%, 56%). Its nearest Tailwind CSS token is indigo-700.
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Conversions
02
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 6.18:1 | pass | pass | fail |
| black | 3.40:1 | fail | pass | fail |
| slate-900 | 2.89:1 | fail | fail | fail |
| gray-100 | 5.61:1 | pass | pass | fail |
Ratios are computed from WCAG 2.x relative luminance. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
03
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #5151cc.
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Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
05
AI prompt snippet
Use #5151cc (rgb(81, 81, 204), nearest Tailwind token indigo-700) as an accent. Keep text contrast at least 4.5:1 — this color scores 6.18:1 on white and 3.4:1 on black.
Paste this into ChatGPT, Claude, Cursor, or v0 to use #5151cc with correct contrast constraints. Browse all palette colors.