#183140#183140

#183140 is a dark, muted cyan. Relative luminance 0.028; OKLCH L 30.0% C 0.041 H 236.7°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#183140
RGB	rgb(24, 49, 64)
HSL	hsl(203, 45%, 17%)
HSV	hsv(203, 63%, 25%)
CMYK	cmyk(62.5%, 23.4%, 0%, 74.9%)
CIE-LAB	lab(19.06, -4.43, -12.37)
CIE-LCH	lch(19.06, 13.14, 250.31°)
OKLab	oklab(30.03% -0.0227 -0.0345)
OKLCH	oklch(30.03% 0.041 236.7)
XYZ	xyz(2.4001, 2.7608, 5.2559)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183140 #402718

analogous

#18403B #183140 #181D40

triadic

#183140 #401831 #314018

tetradic

#183140 #3B1840 #402718 #1D4018

square

#183140 #3B1840 #402718 #1D4018

split-complementary

#183140 #40181D #403B18

monochromatic

#081116 #081116 #183140 #29536D #397599

Accessibility & contrast

On white

13.53

#183140 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#183140 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183140

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183140	#FFFFFF	#000000	##FFFFFF
##183140	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3141

Deuteranopia (green-blind)

#252C40

Tritanopia (blue-blind)

#003536

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #183140;
/* rgb */ color: rgb(24, 49, 64);
/* oklch */ color: oklch(30.0% 0.041 236.7);

Tailwind

colors: {
  custom: {
    50: '#596974',
    500: '#183140',
    950: '#000000',
  },
}

SCSS

$custom: #183140;
$custom-light: #596974;
$custom-dark: #000000;

JSON

{
  "hex": "#183140",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 64
  },
  "hsl": {
    "h": 202.5,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.30031,
    "c": 0.04131,
    "h": 236.7
  },
  "luminance": 0.02761
}

Semantic roles & 50–950 ramp

primary

#183140

secondary

#77533D

accent

#8453D5

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#040608

muted

#797A7B

Preview Lab

Preview with #183140

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

Preview Lab → · Contrast checker → · Palette generator →