#237cf3
a balanced, electric blue · cool · closest name: royalblue
RGB
35, 124, 243
HSL
214°, 90%, 55%
CMYK
86, 49, 0, 5
Luminance
0.2124
Every format
| HEX | #237cf3 |
| RGB | rgb(35, 124, 243) |
| HSL | hsl(214, 90%, 55%) |
| CMYK | cmyk(86%, 49%, 0%, 5%) |
| LAB | lab(53.2 18.0 -66.7) |
| LCH | lch(53.2 69.1 285.1) |
| OKLCH | oklch(0.602 0.197 257.7) |
Copy-ready code
/* CSS */
color: #237cf3;
background-color: #237cf3;
/* Tailwind (arbitrary) */
class="text-[#237cf3] bg-[#237cf3]"
/* SCSS */
$brand: #237cf3;
/* SwiftUI */
Color(red: 0.137, green: 0.486, blue: 0.953)
/* Android */
Color.parseColor("#237cf3")Accessibility — WCAG contrast
Aa
#237cf3 on white: 4.00:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#237cf3 on black: 5.25:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red13.7%
Green48.6%
Blue95.3%
CMYK percentages
Cyan85.6%
Magenta49.0%
Yellow0.0%
Key (black)4.7%
Color previews
#237cf3 text on a black background
contrast 5.25:1
Card sample
#237cf3 text on a white background
contrast 4.00:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #237cf3;
Background color
Panel with #237cf3 background
background-color: #237cf3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #237cf3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(35, 124, 243, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(35, 124, 243, 0.45);
Border & gradient
Gradient panel
border: 3px solid #237cf3; background: linear-gradient(135deg, #237cf3, #5523F3);