#3971cf
a balanced, vivid blue · cool · closest name: dodgerblue
RGB
57, 113, 207
HSL
218°, 61%, 52%
CMYK
73, 45, 0, 19
Luminance
0.1719
Every format
| HEX | #3971cf |
| RGB | rgb(57, 113, 207) |
| HSL | hsl(218, 61%, 52%) |
| CMYK | cmyk(73%, 45%, 0%, 19%) |
| LAB | lab(48.5 13.6 -54.0) |
| LCH | lch(48.5 55.7 284.1) |
| OKLCH | oklch(0.560 0.157 260.1) |
Copy-ready code
/* CSS */
color: #3971cf;
background-color: #3971cf;
/* Tailwind (arbitrary) */
class="text-[#3971cf] bg-[#3971cf]"
/* SCSS */
$brand: #3971cf;
/* SwiftUI */
Color(red: 0.224, green: 0.443, blue: 0.812)
/* Android */
Color.parseColor("#3971cf")Accessibility — WCAG contrast
Aa
#3971cf on white: 4.73:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3971cf on black: 4.44:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green44.3%
Blue81.2%
CMYK percentages
Cyan72.5%
Magenta45.4%
Yellow0.0%
Key (black)18.8%
Color previews
#3971cf text on a black background
contrast 4.44:1
Card sample
#3971cf text on a white background
contrast 4.73:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3971cf;
Background color
Panel with #3971cf background
background-color: #3971cf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3971cf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 113, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 113, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3971cf; background: linear-gradient(135deg, #3971cf, #6539CF);