#288fe7
a balanced, electric blue · cool · closest name: dodgerblue
RGB
40, 143, 231
HSL
208°, 80%, 53%
CMYK
83, 38, 0, 9
Luminance
0.2587
Every format
| HEX | #288fe7 |
| RGB | rgb(40, 143, 231) |
| HSL | hsl(208, 80%, 53%) |
| CMYK | cmyk(83%, 38%, 0%, 9%) |
| LAB | lab(57.9 2.3 -52.5) |
| LCH | lch(57.9 52.5 272.5) |
| OKLCH | oklch(0.637 0.160 249.5) |
Copy-ready code
/* CSS */
color: #288fe7;
background-color: #288fe7;
/* Tailwind (arbitrary) */
class="text-[#288fe7] bg-[#288fe7]"
/* SCSS */
$brand: #288fe7;
/* SwiftUI */
Color(red: 0.157, green: 0.561, blue: 0.906)
/* Android */
Color.parseColor("#288fe7")Accessibility — WCAG contrast
Aa
#288fe7 on white: 3.40:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#288fe7 on black: 6.17:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green56.1%
Blue90.6%
CMYK percentages
Cyan82.7%
Magenta38.1%
Yellow0.0%
Key (black)9.4%
Color previews
#288fe7 text on a black background
contrast 6.17:1
Card sample
#288fe7 text on a white background
contrast 3.40:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #288fe7;
Background color
Panel with #288fe7 background
background-color: #288fe7;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #288fe7;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 143, 231, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 143, 231, 0.45);
Border & gradient
Gradient panel
border: 3px solid #288fe7; background: linear-gradient(135deg, #288fe7, #4028E7);