#397dfb
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 125, 251
HSL
219°, 96%, 60%
CMYK
77, 50, 0, 2
Luminance
0.2250
Every format
| HEX | #397dfb |
| RGB | rgb(57, 125, 251) |
| HSL | hsl(219, 96%, 60%) |
| CMYK | cmyk(77%, 50%, 0%, 2%) |
| LAB | lab(54.5 22.2 -68.9) |
| LCH | lch(54.5 72.4 287.9) |
| OKLCH | oklch(0.616 0.201 261.4) |
Copy-ready code
/* CSS */
color: #397dfb;
background-color: #397dfb;
/* Tailwind (arbitrary) */
class="text-[#397dfb] bg-[#397dfb]"
/* SCSS */
$brand: #397dfb;
/* SwiftUI */
Color(red: 0.224, green: 0.490, blue: 0.984)
/* Android */
Color.parseColor("#397dfb")Accessibility — WCAG contrast
Aa
#397dfb on white: 3.82:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#397dfb on black: 5.50:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green49.0%
Blue98.4%
CMYK percentages
Cyan77.3%
Magenta50.2%
Yellow0.0%
Key (black)1.6%
Color previews
#397dfb text on a black background
contrast 5.50:1
Card sample
#397dfb text on a white background
contrast 3.82:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #397dfb;
Background color
Panel with #397dfb background
background-color: #397dfb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #397dfb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 125, 251, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 125, 251, 0.45);
Border & gradient
Gradient panel
border: 3px solid #397dfb; background: linear-gradient(135deg, #397dfb, #7639FB);