#3f8fda
#3f8fda converts to rgb(63, 143, 218) and hsl(209, 68%, 55%). Its nearest Tailwind CSS token is sky-600.
01
Conversions
02
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 3.41:1 | fail | pass | fail |
| black | 6.15:1 | pass | pass | fail |
| slate-900 | 5.23:1 | pass | pass | fail |
| gray-100 | 3.10:1 | fail | 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 #3f8fda.
04
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
05
AI prompt snippet
Use #3f8fda (rgb(63, 143, 218), nearest Tailwind token sky-600) as an accent. Keep text contrast at least 4.5:1 — this color scores 3.41:1 on white and 6.15:1 on black.
Paste this into ChatGPT, Claude, Cursor, or v0 to use #3f8fda with correct contrast constraints. Browse all palette colors.