#037dfb
a balanced, electric blue · cool · closest name: royalblue
RGB
3, 125, 251
HSL
211°, 98%, 50%
CMYK
99, 50, 0, 2
Luminance
0.2165
Every format
| HEX | #037dfb |
| RGB | rgb(3, 125, 251) |
| HSL | hsl(211, 98%, 50%) |
| CMYK | cmyk(99%, 50%, 0%, 2%) |
| LAB | lab(53.6 19.2 -70.4) |
| LCH | lch(53.6 73.0 285.2) |
| OKLCH | oklch(0.606 0.209 256.4) |
Copy-ready code
/* CSS */
color: #037dfb;
background-color: #037dfb;
/* Tailwind (arbitrary) */
class="text-[#037dfb] bg-[#037dfb]"
/* SCSS */
$brand: #037dfb;
/* SwiftUI */
Color(red: 0.012, green: 0.490, blue: 0.984)
/* Android */
Color.parseColor("#037dfb")Accessibility — WCAG contrast
Aa
#037dfb on white: 3.94:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#037dfb on black: 5.33:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red1.2%
Green49.0%
Blue98.4%
CMYK percentages
Cyan98.8%
Magenta50.2%
Yellow0.0%
Key (black)1.6%
Color previews
#037dfb text on a black background
contrast 5.33:1
Card sample
#037dfb text on a white background
contrast 3.94:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #037dfb;
Background color
Panel with #037dfb background
background-color: #037dfb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #037dfb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(3, 125, 251, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(3, 125, 251, 0.45);
Border & gradient
Gradient panel
border: 3px solid #037dfb; background: linear-gradient(135deg, #037dfb, #2E03FB);