#288df0
a balanced, electric blue · cool · closest name: dodgerblue
RGB
40, 141, 240
HSL
210°, 87%, 55%
CMYK
83, 41, 0, 6
Luminance
0.2579
Every format
| HEX | #288df0 |
| RGB | rgb(40, 141, 240) |
| HSL | hsl(210, 87%, 55%) |
| CMYK | cmyk(83%, 41%, 0%, 6%) |
| LAB | lab(57.8 6.8 -57.6) |
| LCH | lch(57.8 58.0 276.8) |
| OKLCH | oklch(0.638 0.173 252.4) |
Copy-ready code
/* CSS */
color: #288df0;
background-color: #288df0;
/* Tailwind (arbitrary) */
class="text-[#288df0] bg-[#288df0]"
/* SCSS */
$brand: #288df0;
/* SwiftUI */
Color(red: 0.157, green: 0.553, blue: 0.941)
/* Android */
Color.parseColor("#288df0")Accessibility — WCAG contrast
Aa
#288df0 on white: 3.41:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#288df0 on black: 6.16:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green55.3%
Blue94.1%
CMYK percentages
Cyan83.3%
Magenta41.3%
Yellow0.0%
Key (black)5.9%
Color previews
#288df0 text on a black background
contrast 6.16:1
Card sample
#288df0 text on a white background
contrast 3.41:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #288df0;
Background color
Panel with #288df0 background
background-color: #288df0;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #288df0;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 141, 240, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 141, 240, 0.45);
Border & gradient
Gradient panel
border: 3px solid #288df0; background: linear-gradient(135deg, #288df0, #4828F0);