#644e8f
#644e8f converts to rgb(100, 78, 143) and hsl(260, 29%, 43%). Its nearest Tailwind CSS token is slate-600.
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Conversions
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WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 6.93:1 | pass | pass | fail |
| black | 3.03:1 | fail | pass | fail |
| slate-900 | 2.57:1 | fail | fail | fail |
| gray-100 | 6.30:1 | 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.
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Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #644e8f.
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Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
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AI prompt snippet
Use #644e8f (rgb(100, 78, 143), nearest Tailwind token slate-600) as an accent. Keep text contrast at least 4.5:1 — this color scores 6.93:1 on white and 3.03:1 on black.
Paste this into ChatGPT, Claude, Cursor, or v0 to use #644e8f with correct contrast constraints. Browse all palette colors.