#3333aa
a dark, vivid blue · warm · closest name: slateblue
RGB
51, 51, 170
HSL
240°, 54%, 43%
CMYK
70, 70, 0, 33
Luminance
0.0597
Every format
| HEX | #3333aa |
| RGB | rgb(51, 51, 170) |
| HSL | hsl(240, 54%, 43%) |
| CMYK | cmyk(70%, 70%, 0%, 33%) |
| LAB | lab(29.3 39.0 -63.4) |
| LCH | lch(29.3 74.5 301.6) |
| OKLCH | oklch(0.407 0.184 274.5) |
Copy-ready code
/* CSS */
color: #3333aa;
background-color: #3333aa;
/* Tailwind (arbitrary) */
class="text-[#3333aa] bg-[#3333aa]"
/* SCSS */
$brand: #3333aa;
/* SwiftUI */
Color(red: 0.200, green: 0.200, blue: 0.667)
/* Android */
Color.parseColor("#3333aa")Accessibility — WCAG contrast
Aa
#3333aa on white: 9.57:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3333aa on black: 2.19:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green20.0%
Blue66.7%
CMYK percentages
Cyan70.0%
Magenta70.0%
Yellow0.0%
Key (black)33.3%
Color previews
#3333aa text on a black background
contrast 2.19:1
Card sample
#3333aa text on a white background
contrast 9.57:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3333aa;
Background color
Panel with #3333aa background
background-color: #3333aa;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3333aa;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 51, 170, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 51, 170, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3333aa; background: linear-gradient(135deg, #3333aa, #8233AA);