#21fcdf
a balanced, electric cyan · cool · closest name: aquamarine
RGB
33, 252, 223
HSL
172°, 97%, 56%
CMYK
87, 0, 12, 1
Luminance
0.7527
Every format
| HEX | #21fcdf |
| RGB | rgb(33, 252, 223) |
| HSL | hsl(172, 97%, 56%) |
| CMYK | cmyk(87%, 0%, 12%, 1%) |
| LAB | lab(89.5 -54.6 0.1) |
| LCH | lch(89.5 54.6 179.9) |
| OKLCH | oklch(0.890 0.158 180.2) |
Copy-ready code
/* CSS */
color: #21fcdf;
background-color: #21fcdf;
/* Tailwind (arbitrary) */
class="text-[#21fcdf] bg-[#21fcdf]"
/* SCSS */
$brand: #21fcdf;
/* SwiftUI */
Color(red: 0.129, green: 0.988, blue: 0.875)
/* Android */
Color.parseColor("#21fcdf")Accessibility — WCAG contrast
Aa
#21fcdf on white: 1.31:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21fcdf on black: 16.05:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green98.8%
Blue87.5%
CMYK percentages
Cyan86.9%
Magenta0.0%
Yellow11.5%
Key (black)1.2%
Color previews
#21fcdf text on a black background
contrast 16.05:1
Card sample
#21fcdf text on a white background
contrast 1.31:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21fcdf;
Background color
Panel with #21fcdf background
background-color: #21fcdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21fcdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 252, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 252, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21fcdf; background: linear-gradient(135deg, #21fcdf, #2187FC);