#183B42#183B42

#183B42 is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.0% C 0.042 H 212.5°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#183B42
RGB	rgb(24, 59, 66)
HSL	hsl(190, 47%, 18%)
HSV	hsv(190, 64%, 26%)
CMYK	cmyk(63.6%, 10.6%, 0%, 74.1%)
CIE-LAB	lab(22.71, -10.18, -8.15)
CIE-LCH	lch(22.71, 13.04, 218.70°)
OKLab	oklab(32.97% -0.0354 -0.0226)
OKLCH	oklch(32.97% 0.042 212.5)
XYZ	xyz(2.9236, 3.7152, 5.7162)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B42 #421F18

analogous

#184234 #183B42 #182642

triadic

#183B42 #42183B #3B4218

tetradic

#183B42 #341842 #421F18 #264218

square

#183B42 #341842 #421F18 #264218

split-complementary

#183B42 #421826 #423418

monochromatic

#081416 #081416 #183B42 #28636F #398B9C

Accessibility & contrast

On white

12.05

#183B42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#183B42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B42

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B42	#FFFFFF	#000000	##FFFFFF
##183B42	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363942

Deuteranopia (green-blind)

#2F3442

Tritanopia (blue-blind)

#003E3D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183b42;
/* rgb */ color: rgb(24, 59, 66);
/* oklch */ color: oklch(33.0% 0.042 212.5);

Tailwind

colors: {
  custom: {
    50: '#5a7176',
    500: '#183b42',
    950: '#000000',
  },
}

SCSS

$custom: #183b42;
$custom-light: #5a7176;
$custom-dark: #000000;

JSON

{
  "hex": "#183b42",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 66
  },
  "hsl": {
    "h": 190,
    "s": 46.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.32971,
    "c": 0.04198,
    "h": 212.5
  },
  "luminance": 0.03715
}

Semantic roles & 50–950 ramp

primary

#183B42

secondary

#79473D

accent

#6851D6

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183B42

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

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