#4288df
a balanced, vivid blue · cool · closest name: dodgerblue
RGB
66, 136, 223
HSL
213°, 71%, 57%
CMYK
70, 39, 0, 13
Luminance
0.2409
Every format
| HEX | #4288df |
| RGB | rgb(66, 136, 223) |
| HSL | hsl(213, 71%, 57%) |
| CMYK | cmyk(70%, 39%, 0%, 13%) |
| LAB | lab(56.2 6.5 -50.7) |
| LCH | lch(56.2 51.1 277.3) |
| OKLCH | oklch(0.624 0.149 255.2) |
Copy-ready code
/* CSS */
color: #4288df;
background-color: #4288df;
/* Tailwind (arbitrary) */
class="text-[#4288df] bg-[#4288df]"
/* SCSS */
$brand: #4288df;
/* SwiftUI */
Color(red: 0.259, green: 0.533, blue: 0.875)
/* Android */
Color.parseColor("#4288df")Accessibility — WCAG contrast
Aa
#4288df on white: 3.61:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#4288df on black: 5.82:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green53.3%
Blue87.5%
CMYK percentages
Cyan70.4%
Magenta39.0%
Yellow0.0%
Key (black)12.5%
Color previews
#4288df text on a black background
contrast 5.82:1
Card sample
#4288df text on a white background
contrast 3.61:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4288df;
Background color
Panel with #4288df background
background-color: #4288df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4288df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 136, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 136, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4288df; background: linear-gradient(135deg, #4288df, #6542DF);