#284feb
a balanced, electric blue · warm · closest name: royalblue
RGB
40, 79, 235
HSL
228°, 83%, 54%
CMYK
83, 66, 0, 8
Luminance
0.1204
Every format
| HEX | #284feb |
| RGB | rgb(40, 79, 235) |
| HSL | hsl(228, 83%, 54%) |
| CMYK | cmyk(83%, 66%, 0%, 8%) |
| LAB | lab(41.3 43.7 -81.7) |
| LCH | lch(41.3 92.6 298.2) |
| OKLCH | oklch(0.511 0.237 266.3) |
Copy-ready code
/* CSS */
color: #284feb;
background-color: #284feb;
/* Tailwind (arbitrary) */
class="text-[#284feb] bg-[#284feb]"
/* SCSS */
$brand: #284feb;
/* SwiftUI */
Color(red: 0.157, green: 0.310, blue: 0.922)
/* Android */
Color.parseColor("#284feb")Accessibility — WCAG contrast
Aa
#284feb on white: 6.16:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#284feb on black: 3.41:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green31.0%
Blue92.2%
CMYK percentages
Cyan83.0%
Magenta66.4%
Yellow0.0%
Key (black)7.8%
Color previews
#284feb text on a black background
contrast 3.41:1
Card sample
#284feb text on a white background
contrast 6.16:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #284feb;
Background color
Panel with #284feb background
background-color: #284feb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #284feb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 79, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 79, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #284feb; background: linear-gradient(135deg, #284feb, #8328EB);