#51fdf8
a light, electric cyan · cool · closest name: cyan
RGB
81, 253, 248
HSL
178°, 98%, 66%
CMYK
68, 0, 2, 1
Luminance
0.7878
Every format
| HEX | #51fdf8 |
| RGB | rgb(81, 253, 248) |
| HSL | hsl(178, 98%, 66%) |
| CMYK | cmyk(68%, 0%, 2%, 1%) |
| LAB | lab(91.1 -44.0 -10.4) |
| LCH | lch(91.1 45.2 193.3) |
| OKLCH | oklch(0.907 0.138 192.2) |
Copy-ready code
/* CSS */
color: #51fdf8;
background-color: #51fdf8;
/* Tailwind (arbitrary) */
class="text-[#51fdf8] bg-[#51fdf8]"
/* SCSS */
$brand: #51fdf8;
/* SwiftUI */
Color(red: 0.318, green: 0.992, blue: 0.973)
/* Android */
Color.parseColor("#51fdf8")Accessibility — WCAG contrast
Aa
#51fdf8 on white: 1.25:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51fdf8 on black: 16.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green99.2%
Blue97.3%
CMYK percentages
Cyan68.0%
Magenta0.0%
Yellow2.0%
Key (black)0.8%
Color previews
#51fdf8 text on a black background
contrast 16.76:1
Card sample
#51fdf8 text on a white background
contrast 1.25:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51fdf8;
Background color
Panel with #51fdf8 background
background-color: #51fdf8;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51fdf8;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 253, 248, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 253, 248, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51fdf8; background: linear-gradient(135deg, #51fdf8, #518FFD);