#51adef
a balanced, electric blue · cool · closest name: steelblue
RGB
81, 173, 239
HSL
205°, 83%, 63%
CMYK
66, 28, 0, 6
Luminance
0.3787
Every format
| HEX | #51adef |
| RGB | rgb(81, 173, 239) |
| HSL | hsl(205, 83%, 63%) |
| CMYK | cmyk(66%, 28%, 0%, 6%) |
| LAB | lab(67.9 -7.1 -41.0) |
| LCH | lch(67.9 41.6 260.2) |
| OKLCH | oklch(0.720 0.130 242.8) |
Copy-ready code
/* CSS */
color: #51adef;
background-color: #51adef;
/* Tailwind (arbitrary) */
class="text-[#51adef] bg-[#51adef]"
/* SCSS */
$brand: #51adef;
/* SwiftUI */
Color(red: 0.318, green: 0.678, blue: 0.937)
/* Android */
Color.parseColor("#51adef")Accessibility — WCAG contrast
Aa
#51adef on white: 2.45:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#51adef on black: 8.57:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red31.8%
Green67.8%
Blue93.7%
CMYK percentages
Cyan66.1%
Magenta27.6%
Yellow0.0%
Key (black)6.3%
Color previews
#51adef text on a black background
contrast 8.57:1
Card sample
#51adef text on a white background
contrast 2.45:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #51adef;
Background color
Panel with #51adef background
background-color: #51adef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #51adef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(81, 173, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(81, 173, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #51adef; background: linear-gradient(135deg, #51adef, #5E51EF);