#397df3
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 125, 243
HSL
218°, 89%, 59%
CMYK
77, 49, 0, 5
Luminance
0.2201
Every format
| HEX | #397df3 |
| RGB | rgb(57, 125, 243) |
| HSL | hsl(218, 89%, 59%) |
| CMYK | cmyk(77%, 49%, 0%, 5%) |
| LAB | lab(54.0 19.3 -65.3) |
| LCH | lch(54.0 68.1 286.5) |
| OKLCH | oklch(0.610 0.190 260.6) |
Copy-ready code
/* CSS */
color: #397df3;
background-color: #397df3;
/* Tailwind (arbitrary) */
class="text-[#397df3] bg-[#397df3]"
/* SCSS */
$brand: #397df3;
/* SwiftUI */
Color(red: 0.224, green: 0.490, blue: 0.953)
/* Android */
Color.parseColor("#397df3")Accessibility — WCAG contrast
Aa
#397df3 on white: 3.89:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#397df3 on black: 5.40:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green49.0%
Blue95.3%
CMYK percentages
Cyan76.5%
Magenta48.6%
Yellow0.0%
Key (black)4.7%
Color previews
#397df3 text on a black background
contrast 5.40:1
Card sample
#397df3 text on a white background
contrast 3.89:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #397df3;
Background color
Panel with #397df3 background
background-color: #397df3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #397df3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 125, 243, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 125, 243, 0.45);
Border & gradient
Gradient panel
border: 3px solid #397df3; background: linear-gradient(135deg, #397df3, #7139F3);