#288ddf
a balanced, vivid blue · cool · closest name: dodgerblue
RGB
40, 141, 223
HSL
207°, 74%, 52%
CMYK
82, 37, 0, 13
Luminance
0.2483
Every format
| HEX | #288ddf |
| RGB | rgb(40, 141, 223) |
| HSL | hsl(207, 74%, 52%) |
| CMYK | cmyk(82%, 37%, 0%, 13%) |
| LAB | lab(56.9 0.5 -49.6) |
| LCH | lch(56.9 49.6 270.6) |
| OKLCH | oklch(0.627 0.152 248.3) |
Copy-ready code
/* CSS */
color: #288ddf;
background-color: #288ddf;
/* Tailwind (arbitrary) */
class="text-[#288ddf] bg-[#288ddf]"
/* SCSS */
$brand: #288ddf;
/* SwiftUI */
Color(red: 0.157, green: 0.553, blue: 0.875)
/* Android */
Color.parseColor("#288ddf")Accessibility — WCAG contrast
Aa
#288ddf on white: 3.52:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#288ddf on black: 5.97:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green55.3%
Blue87.5%
CMYK percentages
Cyan82.1%
Magenta36.8%
Yellow0.0%
Key (black)12.5%
Color previews
#288ddf text on a black background
contrast 5.97:1
Card sample
#288ddf text on a white background
contrast 3.52:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #288ddf;
Background color
Panel with #288ddf background
background-color: #288ddf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #288ddf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 141, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 141, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #288ddf; background: linear-gradient(135deg, #288ddf, #3D28DF);