#21cdf3
a balanced, electric cyan · cool · closest name: skyblue
RGB
33, 205, 243
HSL
191°, 90%, 54%
CMYK
86, 16, 0, 5
Luminance
0.5046
Every format
| HEX | #21cdf3 |
| RGB | rgb(33, 205, 243) |
| HSL | hsl(191, 90%, 54%) |
| CMYK | cmyk(86%, 16%, 0%, 5%) |
| LAB | lab(76.3 -27.7 -30.2) |
| LCH | lch(76.3 41.0 227.5) |
| OKLCH | oklch(0.785 0.136 218.3) |
Copy-ready code
/* CSS */
color: #21cdf3;
background-color: #21cdf3;
/* Tailwind (arbitrary) */
class="text-[#21cdf3] bg-[#21cdf3]"
/* SCSS */
$brand: #21cdf3;
/* SwiftUI */
Color(red: 0.129, green: 0.804, blue: 0.953)
/* Android */
Color.parseColor("#21cdf3")Accessibility — WCAG contrast
Aa
#21cdf3 on white: 1.89:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21cdf3 on black: 11.09:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green80.4%
Blue95.3%
CMYK percentages
Cyan86.4%
Magenta15.6%
Yellow0.0%
Key (black)4.7%
Color previews
#21cdf3 text on a black background
contrast 11.09:1
Card sample
#21cdf3 text on a white background
contrast 1.89:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21cdf3;
Background color
Panel with #21cdf3 background
background-color: #21cdf3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21cdf3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 205, 243, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 205, 243, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21cdf3; background: linear-gradient(135deg, #21cdf3, #2141F3);