#643cfa
#643cfa converts to rgb(100, 60, 250) and hsl(253, 95%, 61%). Its nearest Tailwind CSS token is indigo-600.
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Conversions
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WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 5.88:1 | pass | pass | fail |
| black | 3.57:1 | fail | pass | fail |
| slate-900 | 3.03:1 | fail | pass | fail |
| gray-100 | 5.35:1 | 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 #643cfa.
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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 #643cfa (rgb(100, 60, 250), nearest Tailwind token indigo-600) as an accent. Keep text contrast at least 4.5:1 — this color scores 5.88:1 on white and 3.57:1 on black.
Paste this into ChatGPT, Claude, Cursor, or v0 to use #643cfa with correct contrast constraints. Browse all palette colors.