#00ffff
#00ffff is rgb(0, 255, 255), or hsl(180, 100%, 50%). The nearest reference Tailwind v4 token is cyan-300 (#53eafd), not an exact match.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 1.25:1 | fail | fail | fail |
| black | 16.75:1 | pass | pass | pass |
| slate-900 | 14.24:1 | pass | pass | pass |
| gray-100 | 1.14:1 | 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 #00ffff in real UI palettes
These colors appear alongside #00ffff in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #ff00ff
Used together in Anti-Design, Arcade CRT and 5 more styles.
2.50:1
Not for normal text - #ffff00
Used together in Anti-Design, Arcade CRT and 3 more styles.
1.17:1
Not for normal text - #000000
Used together in Anti-Design, VHS Aesthetic.
16.75:1
AA normal text - #00ff00
Used together in Anti-Design, Cyberpunk Neon.
1.09:1
Not for normal text - #ffffff
Used together in Anti-Design, Glitch Art.
1.25:1
Not for normal text - #0000ff
Used together in Anti-Design.
6.85:1
AA normal text
A readable starting point
black text on #00ffff: 16.75:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #00ffff.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #00ffff as the accent color, following the Anti-Design style: rgb(0, 255, 255), nearest Tailwind token cyan-300. Keep text contrast at least 4.5:1 (this color scores 1.25:1 on white, 16.75:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #00ffff with correct contrast constraints. Browse all palette colors.
Questions about #00ffff
What color is #00ffff?
#00ffff is rgb(0, 255, 255), or hsl(180, 100%, 50%). The nearest reference Tailwind v4 token is cyan-300 (#53eafd), not an exact match.
What text color should I use on #00ffff?
Black (#000000) has the higher black-or-white contrast against #00ffff: 16.75:1. 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 #00ffff in Tailwind CSS?
Use bg-[#00ffff], text-[#00ffff], 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.