#00d4ff
#00d4ff is rgb(0, 212, 255), or hsl(190, 100%, 50%). The nearest reference Tailwind v4 token is cyan-400 (#00d3f2), not an exact match.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 1.77:1 | fail | fail | fail |
| black | 11.86:1 | pass | pass | pass |
| slate-900 | 10.08:1 | pass | pass | pass |
| gray-100 | 1.61:1 | 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 #00d4ff in real UI palettes
These colors appear alongside #00d4ff in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #0a0a0a
Used together in Cyber Chinese, Outrun.
11.18:1
AA normal text - #a020f0
Used together in Cyber Chinese, Outrun.
3.00:1
Not for normal text - #00ff88
Used together in Holographic.
1.32:1
Not for normal text - #0a0a1f
Used together in Holographic.
11.02:1
AA normal text - #0a2540
Used together in Stripe Style.
8.78:1
AA normal text - #0f0f0f
Used together in Asymmetric Grid.
10.83:1
AA normal text
A readable starting point
black text on #00d4ff: 11.86:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #00d4ff.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #00d4ff as the accent color, following the Asymmetric Grid style: rgb(0, 212, 255), nearest Tailwind token cyan-400. Keep text contrast at least 4.5:1 (this color scores 1.77:1 on white, 11.86:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #00d4ff with correct contrast constraints. Browse all palette colors.
Questions about #00d4ff
What color is #00d4ff?
#00d4ff is rgb(0, 212, 255), or hsl(190, 100%, 50%). The nearest reference Tailwind v4 token is cyan-400 (#00d3f2), not an exact match.
What text color should I use on #00d4ff?
Black (#000000) has the higher black-or-white contrast against #00d4ff: 11.86:1. 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 #00d4ff in Tailwind CSS?
Use bg-[#00d4ff], text-[#00d4ff], 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.