#b1002b
#b1002b converts to rgb(177, 0, 43) and hsl(345, 100%, 35%). Its nearest Tailwind CSS token is rose-800.
01
Conversions
02
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 7.23:1 | pass | pass | pass |
| black | 2.90:1 | fail | fail | fail |
| slate-900 | 2.47:1 | fail | fail | fail |
| gray-100 | 6.57:1 | 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 #b1002b.
04
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
05
AI prompt snippet
Use #b1002b (rgb(177, 0, 43), nearest Tailwind token rose-800) as an accent. Keep text contrast at least 4.5:1 — this color scores 7.23:1 on white and 2.9:1 on black.
Paste this into ChatGPT, Claude, Cursor, or v0 to use #b1002b with correct contrast constraints. Browse all palette colors.