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#181621

a deep, soft blue · warm · closest name: black

RGB
24, 22, 33
HSL
251°, 20%, 11%
CMYK
27, 33, 0, 87
Luminance
0.0088

Every format

HEX#181621
RGBrgb(24, 22, 33)
HSLhsl(251, 20%, 11%)
CMYKcmyk(27%, 33%, 0%, 87%)
LABlab(7.9 4.1 -7.3)
LCHlch(7.9 8.4 299.4)
OKLCHoklch(0.208 0.022 292.7)

Copy-ready code

/* CSS */
color: #181621;
background-color: #181621;
/* Tailwind (arbitrary) */
class="text-[#181621] bg-[#181621]"
/* SCSS */
$brand: #181621;
/* SwiftUI */
Color(red: 0.094, green: 0.086, blue: 0.129)
/* Android */
Color.parseColor("#181621")

Accessibility — WCAG contrast

Aa
#181621 on white: 17.86:1
AA ✓ pass · AA-large · AAA
Aa
#181621 on black: 1.18:1
AA ✗ fail · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red9.4%
Green8.6%
Blue12.9%

CMYK percentages

Cyan27.3%
Magenta33.3%
Yellow0.0%
Key (black)87.1%

Color previews

#181621 text on a black background

contrast 1.18:1

Card sample

#181621 text on a white background

contrast 17.86:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #181621;
Background color
Panel with #181621 background
background-color: #181621;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #181621;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(24, 22, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(24, 22, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #181621;
background: linear-gradient(135deg, #181621, #1F1621);

Monochromatic scale

Palettes built from #181621

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #181621 in the Color Lab