#21f8df
a balanced, electric cyan · cool · closest name: turquoise
RGB
33, 248, 223
HSL
173°, 94%, 55%
CMYK
87, 0, 10, 3
Luminance
0.7279
Every format
| HEX | #21f8df |
| RGB | rgb(33, 248, 223) |
| HSL | hsl(173, 94%, 55%) |
| CMYK | cmyk(87%, 0%, 10%, 3%) |
| LAB | lab(88.3 -53.0 -1.6) |
| LCH | lch(88.3 53.0 181.7) |
| OKLCH | oklch(0.880 0.154 181.9) |
Copy-ready code
/* CSS */
color: #21f8df;
background-color: #21f8df;
/* Tailwind (arbitrary) */
class="text-[#21f8df] bg-[#21f8df]"
/* SCSS */
$brand: #21f8df;
/* SwiftUI */
Color(red: 0.129, green: 0.973, blue: 0.875)
/* Android */
Color.parseColor("#21f8df")Accessibility — WCAG contrast
Aa
#21f8df on white: 1.35:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21f8df on black: 15.56:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green97.3%
Blue87.5%
CMYK percentages
Cyan86.7%
Magenta0.0%
Yellow10.1%
Key (black)2.7%
Color previews
#21f8df text on a black background
contrast 15.56:1
Card sample
#21f8df text on a white background
contrast 1.35:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21f8df;
Background color
Panel with #21f8df background
background-color: #21f8df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21f8df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 248, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 248, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21f8df; background: linear-gradient(135deg, #21f8df, #2182F8);