#51fddf
a light, electric cyan · cool · closest name: aquamarine
RGB
81, 253, 223
HSL
170°, 98%, 66%
CMYK
68, 0, 12, 1
Luminance
0.7733
Every format
| HEX | #51fddf |
| RGB | rgb(81, 253, 223) |
| HSL | hsl(170, 98%, 66%) |
| CMYK | cmyk(68%, 0%, 12%, 1%) |
| LAB | lab(90.5 -50.4 1.6) |
| LCH | lch(90.5 50.5 178.2) |
| OKLCH | oklch(0.900 0.145 178.6) |
Copy-ready code
/* CSS */
color: #51fddf;
background-color: #51fddf;
/* Tailwind (arbitrary) */
class="text-[#51fddf] bg-[#51fddf]"
/* SCSS */
$brand: #51fddf;
/* SwiftUI */
Color(red: 0.318, green: 0.992, blue: 0.875)
/* Android */
Color.parseColor("#51fddf")Accessibility — WCAG contrast
Aa
#51fddf on white: 1.28:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51fddf on black: 16.47:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green99.2%
Blue87.5%
CMYK percentages
Cyan68.0%
Magenta0.0%
Yellow11.9%
Key (black)0.8%
Color previews
#51fddf text on a black background
contrast 16.47:1
Card sample
#51fddf text on a white background
contrast 1.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51fddf;
Background color
Panel with #51fddf background
background-color: #51fddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51fddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 253, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 253, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51fddf; background: linear-gradient(135deg, #51fddf, #51A8FD);