#51c6df
a balanced, vivid cyan · cool · closest name: skyblue
RGB
81, 198, 223
HSL
191°, 69%, 60%
CMYK
64, 11, 0, 13
Luminance
0.4747
Every format
| HEX | #51c6df |
| RGB | rgb(81, 198, 223) |
| HSL | hsl(191, 69%, 60%) |
| CMYK | cmyk(64%, 11%, 0%, 13%) |
| LAB | lab(74.5 -25.3 -22.2) |
| LCH | lch(74.5 33.6 221.3) |
| OKLCH | oklch(0.770 0.109 214.3) |
Copy-ready code
/* CSS */
color: #51c6df;
background-color: #51c6df;
/* Tailwind (arbitrary) */
class="text-[#51c6df] bg-[#51c6df]"
/* SCSS */
$brand: #51c6df;
/* SwiftUI */
Color(red: 0.318, green: 0.776, blue: 0.875)
/* Android */
Color.parseColor("#51c6df")Accessibility — WCAG contrast
Aa
#51c6df on white: 2.00:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51c6df on black: 10.49:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green77.6%
Blue87.5%
CMYK percentages
Cyan63.7%
Magenta11.2%
Yellow0.0%
Key (black)12.5%
Color previews
#51c6df text on a black background
contrast 10.49:1
Card sample
#51c6df text on a white background
contrast 2.00:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51c6df;
Background color
Panel with #51c6df background
background-color: #51c6df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51c6df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 198, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 198, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51c6df; background: linear-gradient(135deg, #51c6df, #5167DF);