#3971fd
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 113, 253
HSL
223°, 98%, 61%
CMYK
78, 55, 0, 1
Luminance
0.1977
Every format
| HEX | #3971fd |
| RGB | rgb(57, 113, 253) |
| HSL | hsl(223, 98%, 61%) |
| CMYK | cmyk(78%, 55%, 0%, 1%) |
| LAB | lab(51.6 30.4 -74.9) |
| LCH | lch(51.6 80.8 292.1) |
| OKLCH | oklch(0.594 0.217 264.3) |
Copy-ready code
/* CSS */
color: #3971fd;
background-color: #3971fd;
/* Tailwind (arbitrary) */
class="text-[#3971fd] bg-[#3971fd]"
/* SCSS */
$brand: #3971fd;
/* SwiftUI */
Color(red: 0.224, green: 0.443, blue: 0.992)
/* Android */
Color.parseColor("#3971fd")Accessibility — WCAG contrast
Aa
#3971fd on white: 4.24:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3971fd on black: 4.95:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green44.3%
Blue99.2%
CMYK percentages
Cyan77.5%
Magenta55.3%
Yellow0.0%
Key (black)0.8%
Color previews
#3971fd text on a black background
contrast 4.95:1
Card sample
#3971fd text on a white background
contrast 4.24:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3971fd;
Background color
Panel with #3971fd background
background-color: #3971fd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3971fd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 113, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 113, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3971fd; background: linear-gradient(135deg, #3971fd, #8439FD);