#555b66
a dark, muted blue · cool · closest name: darkslategray
RGB
85, 91, 102
HSL
219°, 9%, 37%
CMYK
17, 11, 0, 60
Luminance
0.1037
Every format
| HEX | #555b66 |
| RGB | rgb(85, 91, 102) |
| HSL | hsl(219, 9%, 37%) |
| CMYK | cmyk(17%, 11%, 0%, 60%) |
| LAB | lab(38.5 0.2 -7.1) |
| LCH | lch(38.5 7.1 271.7) |
| OKLCH | oklch(0.470 0.019 262.7) |
Copy-ready code
/* CSS */
color: #555b66;
background-color: #555b66;
/* Tailwind (arbitrary) */
class="text-[#555b66] bg-[#555b66]"
/* SCSS */
$brand: #555b66;
/* SwiftUI */
Color(red: 0.333, green: 0.357, blue: 0.400)
/* Android */
Color.parseColor("#555b66")Accessibility — WCAG contrast
Aa
#555b66 on white: 6.83:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#555b66 on black: 3.07:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red33.3%
Green35.7%
Blue40.0%
CMYK percentages
Cyan16.7%
Magenta10.8%
Yellow0.0%
Key (black)60.0%
Color previews
#555b66 text on a black background
contrast 3.07:1
Card sample
#555b66 text on a white background
contrast 6.83:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #555b66;
Background color
Panel with #555b66 background
background-color: #555b66;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #555b66;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(85, 91, 102, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(85, 91, 102, 0.45);
Border & gradient
Gradient panel
border: 3px solid #555b66; background: linear-gradient(135deg, #555b66, #5A5566);