#3300dd
a dark, electric blue · warm · closest name: blue
RGB
51, 0, 221
HSL
254°, 100%, 43%
CMYK
77, 100, 0, 13
Luminance
0.0592
Every format
| HEX | #3300dd |
| RGB | rgb(51, 0, 221) |
| HSL | hsl(254, 100%, 43%) |
| CMYK | cmyk(77%, 100%, 0%, 13%) |
| LAB | lab(29.2 71.7 -93.6) |
| LCH | lch(29.2 118.0 307.4) |
| OKLCH | oklch(0.423 0.271 272.9) |
Copy-ready code
/* CSS */
color: #3300dd;
background-color: #3300dd;
/* Tailwind (arbitrary) */
class="text-[#3300dd] bg-[#3300dd]"
/* SCSS */
$brand: #3300dd;
/* SwiftUI */
Color(red: 0.200, green: 0.000, blue: 0.867)
/* Android */
Color.parseColor("#3300dd")Accessibility — WCAG contrast
Aa
#3300dd on white: 9.61:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3300dd on black: 2.18:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green0.0%
Blue86.7%
CMYK percentages
Cyan76.9%
Magenta100.0%
Yellow0.0%
Key (black)13.3%
Color previews
#3300dd text on a black background
contrast 2.18:1
Card sample
#3300dd text on a white background
contrast 9.61:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3300dd;
Background color
Panel with #3300dd background
background-color: #3300dd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3300dd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 0, 221, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 0, 221, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3300dd; background: linear-gradient(135deg, #3300dd, #C600DD);