#18182C#18182C

#18182C is a very dark, muted blue. Relative luminance 0.010; OKLCH L 22.0% C 0.039 H 282.7°. Best body text is #FFFFFF at 17.42:1 contrast (WCAG AA passes).

Color values

HEX	#18182C
RGB	rgb(24, 24, 44)
HSL	hsl(240, 29%, 13%)
HSV	hsv(240, 45%, 17%)
CMYK	cmyk(45.5%, 45.5%, 0%, 82.7%)
CIE-LAB	lab(9.23, 6.28, -13.49)
CIE-LCH	lch(9.23, 14.88, 294.97°)
OKLab	oklab(21.99% 0.0086 -0.0378)
OKLCH	oklch(21.99% 0.039 282.7)
XYZ	xyz(1.1578, 1.0293, 2.5200)
Luminance	0.0103 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18182C #2C2C18

analogous

#18222C #18182C #22182C

triadic

#18182C #2C1818 #182C18

tetradic

#18182C #2C1822 #2C2C18 #182C22

square

#18182C #2C1822 #2C2C18 #182C22

split-complementary

#18182C #2C2218 #222C18

monochromatic

#0B0B14 #0B0B14 #18182C #2E2E54 #43437B

Accessibility & contrast

On white

17.42

#18182C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#18182C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18182C

17.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18182C	#FFFFFF	#000000	##FFFFFF
##18182C	1.00	17.42	1.21	17.42
#FFFFFF	17.42	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#121B2D

Deuteranopia (green-blind)

#11192C

Tritanopia (blue-blind)

#121C1F

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #18182c;
/* rgb */ color: rgb(24, 24, 44);
/* oklch */ color: oklch(22.0% 0.039 282.7);

Tailwind

colors: {
  custom: {
    50: '#565465',
    500: '#18182c',
    950: '#000000',
  },
}

SCSS

$custom: #18182c;
$custom-light: #565465;
$custom-dark: #000000;

JSON

{
  "hex": "#18182c",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 44
  },
  "hsl": {
    "h": 240,
    "s": 29.412,
    "l": 13.333
  },
  "oklch": {
    "l": 0.21993,
    "c": 0.03876,
    "h": 282.7
  },
  "luminance": 0.01029
}

Semantic roles & 50–950 ramp

primary

#18182C

secondary

#60603F

accent

#C662C6

background

#F5F4F6

surface

#E9E7EB

border

#C5C3C6

text

#030205

muted

#78787A

Preview Lab

Preview with #18182C

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

Preview Lab → · Contrast checker → · Palette generator →