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#0b3f39

a deep, vivid cyan · cool · closest name: darkslategray

RGB
11, 63, 57
HSL
173°, 70%, 15%
CMYK
83, 0, 10, 75
Luminance
0.0392

Every format

HEX#0b3f39
RGBrgb(11, 63, 57)
HSLhsl(173, 70%, 15%)
CMYKcmyk(83%, 0%, 10%, 75%)
LABlab(23.4 -18.2 -1.1)
LCHlch(23.4 18.2 183.6)
OKLCHoklch(0.333 0.053 183.6)

Copy-ready code

/* CSS */
color: #0b3f39;
background-color: #0b3f39;
/* Tailwind (arbitrary) */
class="text-[#0b3f39] bg-[#0b3f39]"
/* SCSS */
$brand: #0b3f39;
/* SwiftUI */
Color(red: 0.043, green: 0.247, blue: 0.224)
/* Android */
Color.parseColor("#0b3f39")

Accessibility — WCAG contrast

Aa
#0b3f39 on white: 11.77:1
AA ✓ pass · AA-large · AAA
Aa
#0b3f39 on black: 1.78:1
AA ✗ fail · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red4.3%
Green24.7%
Blue22.4%

CMYK percentages

Cyan82.5%
Magenta0.0%
Yellow9.5%
Key (black)75.3%

Color previews

#0b3f39 text on a black background

contrast 1.78:1

Card sample

#0b3f39 text on a white background

contrast 11.77:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #0b3f39;
Background color
Panel with #0b3f39 background
background-color: #0b3f39;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #0b3f39;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(11, 63, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(11, 63, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0b3f39;
background: linear-gradient(135deg, #0b3f39, #0B223F);

Monochromatic scale

Palettes built from #0b3f39

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #0b3f39 in the Color Lab