#818cf8
#818cf8 is rgb(129, 140, 248), or hsl(234, 89%, 74%). The nearest reference Tailwind v4 token is indigo-400 (#7c86ff), not an exact match.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 2.98:1 | fail | fail | fail |
| black | 7.04:1 | pass | pass | pass |
| slate-900 | 5.98:1 | pass | pass | fail |
| gray-100 | 2.71:1 | fail | fail | fail |
Ratios use WCAG relative luminance for opaque sRGB colors. Normal text requires 4.5:1, or 7:1 at AAA. Large text requires 3:1: at least 24 CSS pixels, or about 18.67 CSS pixels when bold. Pass/fail uses the unrounded ratio. Contrast alone is not a full accessibility assessment.
Colors paired with #818cf8 in real UI palettes
These colors appear alongside #818cf8 in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #0f0e2e
Used together in Magic Circle.
6.27:1
AA normal text - #1e1b4b
Used together in Magic Circle.
5.36:1
AA normal text - #e2e8f0
Used together in Magic Circle.
2.42:1
Not for normal text - #fbbf24
Used together in Magic Circle.
1.79:1
Not for normal text
A readable starting point
black text on #818cf8: 7.04:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #818cf8.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #818cf8 as the accent color, following the Magic Circle style: rgb(129, 140, 248), nearest Tailwind token indigo-400. Keep text contrast at least 4.5:1 (this color scores 2.98:1 on white, 7.04:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #818cf8 with correct contrast constraints. Browse all palette colors.
Questions about #818cf8
What color is #818cf8?
#818cf8 is rgb(129, 140, 248), or hsl(234, 89%, 74%). The nearest reference Tailwind v4 token is indigo-400 (#7c86ff), not an exact match.
What text color should I use on #818cf8?
Black (#000000) has the higher black-or-white contrast against #818cf8: 7.04:1. This calculation assumes opaque, flat sRGB colors. Normal text requires 4.5:1 and large text 3:1 under WCAG 2.2 SC 1.4.3; it is not a complete accessibility assessment.
How can I use exactly #818cf8 in Tailwind CSS?
Use bg-[#818cf8], text-[#818cf8], or a CSS custom property instead of substituting a nearby named token. The reference palette is Tailwind CSS 4.1.18, converted from OKLCH to sRGB hex; newer Tailwind versions and custom themes can differ.
Sources and calculation limits
Reference palette: Tailwind CSS 4.1.18, converted from OKLCH to sRGB hex. Named tokens are versioned approximations; use the exact hex utilities when matching an existing design. Palette pairings come from the linked StyleKit definitions, not external popularity or preference data.