#21ddf7
a balanced, electric cyan · cool · closest name: skyblue
RGB
33, 221, 247
HSL
187°, 93%, 55%
CMYK
87, 11, 0, 3
Luminance
0.5875
Every format
| HEX | #21ddf7 |
| RGB | rgb(33, 221, 247) |
| HSL | hsl(187, 93%, 55%) |
| CMYK | cmyk(87%, 11%, 0%, 3%) |
| LAB | lab(81.2 -34.1 -25.0) |
| LCH | lch(81.2 42.3 216.2) |
| OKLCH | oklch(0.824 0.138 210.2) |
Copy-ready code
/* CSS */
color: #21ddf7;
background-color: #21ddf7;
/* Tailwind (arbitrary) */
class="text-[#21ddf7] bg-[#21ddf7]"
/* SCSS */
$brand: #21ddf7;
/* SwiftUI */
Color(red: 0.129, green: 0.867, blue: 0.969)
/* Android */
Color.parseColor("#21ddf7")Accessibility — WCAG contrast
Aa
#21ddf7 on white: 1.65:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21ddf7 on black: 12.75:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green86.7%
Blue96.9%
CMYK percentages
Cyan86.6%
Magenta10.5%
Yellow0.0%
Key (black)3.1%
Color previews
#21ddf7 text on a black background
contrast 12.75:1
Card sample
#21ddf7 text on a white background
contrast 1.65:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21ddf7;
Background color
Panel with #21ddf7 background
background-color: #21ddf7;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21ddf7;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 221, 247, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 221, 247, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21ddf7; background: linear-gradient(135deg, #21ddf7, #214EF7);