#181828#181828

#181828 is a very dark, muted blue. Relative luminance 0.010; OKLCH L 21.7% C 0.031 H 283.5°. Best body text is #FFFFFF at 17.50:1 contrast (WCAG AA passes).

Color values

HEX	#181828
RGB	rgb(24, 24, 40)
HSL	hsl(240, 25%, 13%)
HSV	hsv(240, 40%, 16%)
CMYK	cmyk(40%, 40%, 0%, 84.3%)
CIE-LAB	lab(9.00, 4.88, -10.90)
CIE-LCH	lch(9.00, 11.94, 294.11°)
OKLab	oklab(21.73% 0.0073 -0.0303)
OKLCH	oklch(21.73% 0.031 283.5)
XYZ	xyz(1.0862, 1.0006, 2.1430)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181828 #282818

analogous

#182028 #181828 #201828

triadic

#181828 #281818 #182818

tetradic

#181828 #281820 #282818 #182820

square

#181828 #281820 #282818 #182820

split-complementary

#181828 #282018 #202818

monochromatic

#0B0B13 #0B0B13 #181828 #2F2F4E #464674

Accessibility & contrast

On white

17.50

#181828 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#181828 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181828

17.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181828	#FFFFFF	#000000	##FFFFFF
##181828	1.00	17.50	1.20	17.50
#FFFFFF	17.50	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131A29

Deuteranopia (green-blind)

#131928

Tritanopia (blue-blind)

#141B1E

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #181828;
/* rgb */ color: rgb(24, 24, 40);
/* oklch */ color: oklch(21.7% 0.031 283.5);

Tailwind

colors: {
  custom: {
    50: '#555462',
    500: '#181828',
    950: '#000000',
  },
}

SCSS

$custom: #181828;
$custom-light: #555462;
$custom-dark: #000000;

JSON

{
  "hex": "#181828",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 40
  },
  "hsl": {
    "h": 240,
    "s": 25,
    "l": 12.549
  },
  "oklch": {
    "l": 0.21733,
    "c": 0.03119,
    "h": 283.5
  },
  "luminance": 0.01001
}

Semantic roles & 50–950 ramp

primary

#181828

secondary

#5C5C40

accent

#C166C1

background

#F4F4F5

surface

#E8E7EA

border

#C4C3C6

text

#030205

muted

#787879

Preview Lab

Preview with #181828

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →