#21fefd
a balanced, electric cyan · cool · “cyan”
RGB
33, 254, 253
HSL
180°, 99%, 56%
CMYK
87, 0, 0, 0
Luminance
0.7830
Every format
| HEX | #21fefd |
| RGB | rgb(33, 254, 253) |
| HSL | hsl(180, 99%, 56%) |
| CMYK | cmyk(87%, 0%, 0%, 0%) |
| LAB | lab(90.9 -47.3 -13.4) |
| LCH | lch(90.9 49.1 195.8) |
| OKLCH | oklch(0.904 0.151 194.3) |
Copy-ready code
/* CSS */
color: #21fefd;
background-color: #21fefd;
/* Tailwind (arbitrary) */
class="text-[#21fefd] bg-[#21fefd]"
/* SCSS */
$brand: #21fefd;
/* SwiftUI */
Color(red: 0.129, green: 0.996, blue: 0.992)
/* Android */
Color.parseColor("#21fefd")Accessibility — WCAG contrast
Aa
#21fefd on white: 1.26:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21fefd on black: 16.66:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green99.6%
Blue99.2%
CMYK percentages
Cyan87.0%
Magenta0.0%
Yellow0.4%
Key (black)0.4%
Color previews
#21fefd text on a black background
contrast 16.66:1
Card sample
#21fefd text on a white background
contrast 1.26:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21fefd;
Background color
Panel with #21fefd background
background-color: #21fefd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21fefd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 254, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 254, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21fefd; background: linear-gradient(135deg, #21fefd, #216CFE);