#284df4
a balanced, electric blue · warm · closest name: royalblue
RGB
40, 77, 244
HSL
229°, 90%, 56%
CMYK
84, 68, 0, 4
Luminance
0.1229
Every format
| HEX | #284df4 |
| RGB | rgb(40, 77, 244) |
| HSL | hsl(229, 90%, 56%) |
| CMYK | cmyk(84%, 68%, 0%, 4%) |
| LAB | lab(41.7 48.1 -86.1) |
| LCH | lch(41.7 98.6 299.2) |
| OKLCH | oklch(0.516 0.250 266.5) |
Copy-ready code
/* CSS */
color: #284df4;
background-color: #284df4;
/* Tailwind (arbitrary) */
class="text-[#284df4] bg-[#284df4]"
/* SCSS */
$brand: #284df4;
/* SwiftUI */
Color(red: 0.157, green: 0.302, blue: 0.957)
/* Android */
Color.parseColor("#284df4")Accessibility — WCAG contrast
Aa
#284df4 on white: 6.07:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#284df4 on black: 3.46:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green30.2%
Blue95.7%
CMYK percentages
Cyan83.6%
Magenta68.4%
Yellow0.0%
Key (black)4.3%
Color previews
#284df4 text on a black background
contrast 3.46:1
Card sample
#284df4 text on a white background
contrast 6.07:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #284df4;
Background color
Panel with #284df4 background
background-color: #284df4;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #284df4;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 77, 244, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 77, 244, 0.45);
Border & gradient
Gradient panel
border: 3px solid #284df4; background: linear-gradient(135deg, #284df4, #8B28F4);