#00ffff
a balanced, electric cyan · cool · “cyan”
RGB
0, 255, 255
HSL
180°, 100%, 50%
CMYK
100, 0, 0, 0
Luminance
0.7874
Every format
| HEX | #00ffff |
| RGB | rgb(0, 255, 255) |
| HSL | hsl(180, 100%, 50%) |
| CMYK | cmyk(100%, 0%, 0%, 0%) |
| LAB | lab(91.1 -48.1 -14.1) |
| LCH | lch(91.1 50.1 196.4) |
| OKLCH | oklch(0.905 0.155 194.8) |
Copy-ready code
/* CSS */
color: #00ffff;
background-color: #00ffff;
/* Tailwind (arbitrary) */
class="text-[#00ffff] bg-[#00ffff]"
/* SCSS */
$brand: #00ffff;
/* SwiftUI */
Color(red: 0.000, green: 1.000, blue: 1.000)
/* Android */
Color.parseColor("#00ffff")Accessibility — WCAG contrast
Aa
#00ffff on white: 1.25:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#00ffff on black: 16.75:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green100.0%
Blue100.0%
CMYK percentages
Cyan100.0%
Magenta0.0%
Yellow0.0%
Key (black)0.0%
Color previews
#00ffff text on a black background
contrast 16.75:1
Card sample
#00ffff text on a white background
contrast 1.25:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #00ffff;
Background color
Panel with #00ffff background
background-color: #00ffff;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #00ffff;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 255, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 255, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #00ffff; background: linear-gradient(135deg, #00ffff, #0055FF);