#178dbb
a dark, electric cyan · cool · closest name: steelblue
RGB
23, 141, 187
HSL
197°, 78%, 41%
CMYK
88, 25, 0, 27
Luminance
0.2282
Every format
| HEX | #178dbb |
| RGB | rgb(23, 141, 187) |
| HSL | hsl(197, 78%, 41%) |
| CMYK | cmyk(88%, 25%, 0%, 27%) |
| LAB | lab(54.9 -14.0 -32.5) |
| LCH | lch(54.9 35.4 246.7) |
| OKLCH | oklch(0.605 0.117 231.5) |
Copy-ready code
/* CSS */
color: #178dbb;
background-color: #178dbb;
/* Tailwind (arbitrary) */
class="text-[#178dbb] bg-[#178dbb]"
/* SCSS */
$brand: #178dbb;
/* SwiftUI */
Color(red: 0.090, green: 0.553, blue: 0.733)
/* Android */
Color.parseColor("#178dbb")Accessibility — WCAG contrast
Aa
#178dbb on white: 3.77:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#178dbb on black: 5.56:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red9.0%
Green55.3%
Blue73.3%
CMYK percentages
Cyan87.7%
Magenta24.6%
Yellow0.0%
Key (black)26.7%
Color previews
#178dbb text on a black background
contrast 5.56:1
Card sample
#178dbb text on a white background
contrast 3.77:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #178dbb;
Background color
Panel with #178dbb background
background-color: #178dbb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #178dbb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(23, 141, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 141, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #178dbb; background: linear-gradient(135deg, #178dbb, #1720BB);