#21ddf8
a balanced, electric cyan · cool · closest name: skyblue
RGB
33, 221, 248
HSL
188°, 94%, 55%
CMYK
87, 11, 0, 3
Luminance
0.5881
Every format
| HEX | #21ddf8 |
| RGB | rgb(33, 221, 248) |
| HSL | hsl(188, 94%, 55%) |
| CMYK | cmyk(87%, 11%, 0%, 3%) |
| LAB | lab(81.2 -33.8 -25.4) |
| LCH | lch(81.2 42.3 217.0) |
| OKLCH | oklch(0.825 0.139 210.8) |
Copy-ready code
/* CSS */
color: #21ddf8;
background-color: #21ddf8;
/* Tailwind (arbitrary) */
class="text-[#21ddf8] bg-[#21ddf8]"
/* SCSS */
$brand: #21ddf8;
/* SwiftUI */
Color(red: 0.129, green: 0.867, blue: 0.973)
/* Android */
Color.parseColor("#21ddf8")Accessibility — WCAG contrast
Aa
#21ddf8 on white: 1.65:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21ddf8 on black: 12.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green86.7%
Blue97.3%
CMYK percentages
Cyan86.7%
Magenta10.9%
Yellow0.0%
Key (black)2.7%
Color previews
#21ddf8 text on a black background
contrast 12.76:1
Card sample
#21ddf8 text on a white background
contrast 1.65:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21ddf8;
Background color
Panel with #21ddf8 background
background-color: #21ddf8;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21ddf8;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 221, 248, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 221, 248, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21ddf8; background: linear-gradient(135deg, #21ddf8, #214EF8);