#288feb
a balanced, electric blue · cool · closest name: dodgerblue
RGB
40, 143, 235
HSL
208°, 83%, 54%
CMYK
83, 39, 0, 8
Luminance
0.2609
Every format
| HEX | #288feb |
| RGB | rgb(40, 143, 235) |
| HSL | hsl(208, 83%, 54%) |
| CMYK | cmyk(83%, 39%, 0%, 8%) |
| LAB | lab(58.1 3.8 -54.4) |
| LCH | lch(58.1 54.5 274.0) |
| OKLCH | oklch(0.639 0.165 250.5) |
Copy-ready code
/* CSS */
color: #288feb;
background-color: #288feb;
/* Tailwind (arbitrary) */
class="text-[#288feb] bg-[#288feb]"
/* SCSS */
$brand: #288feb;
/* SwiftUI */
Color(red: 0.157, green: 0.561, blue: 0.922)
/* Android */
Color.parseColor("#288feb")Accessibility — WCAG contrast
Aa
#288feb on white: 3.38:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#288feb on black: 6.22:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green56.1%
Blue92.2%
CMYK percentages
Cyan83.0%
Magenta39.1%
Yellow0.0%
Key (black)7.8%
Color previews
#288feb text on a black background
contrast 6.22:1
Card sample
#288feb text on a white background
contrast 3.38:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #288feb;
Background color
Panel with #288feb background
background-color: #288feb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #288feb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 143, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 143, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #288feb; background: linear-gradient(135deg, #288feb, #4328EB);