#183A42#183A42

#183A42 is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.7% C 0.042 H 215.3°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#183A42
RGB	rgb(24, 58, 66)
HSL	hsl(191, 47%, 18%)
HSV	hsv(191, 64%, 26%)
CMYK	cmyk(63.6%, 12.1%, 0%, 74.1%)
CIE-LAB	lab(22.35, -9.55, -8.69)
CIE-LCH	lch(22.35, 12.92, 222.30°)
OKLab	oklab(32.68% -0.0341 -0.0241)
OKLCH	oklch(32.68% 0.042 215.3)
XYZ	xyz(2.8727, 3.6134, 5.6993)
Luminance	0.0361 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A42 #422018

analogous

#184235 #183A42 #182542

triadic

#183A42 #42183A #3A4218

tetradic

#183A42 #351842 #422018 #254218

square

#183A42 #351842 #422018 #254218

split-complementary

#183A42 #421825 #423518

monochromatic

#081416 #081416 #183A42 #28616F #39899C

Accessibility & contrast

On white

12.19

#183A42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#183A42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A42

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A42	#FFFFFF	#000000	##FFFFFF
##183A42	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343842

Deuteranopia (green-blind)

#2E3342

Tritanopia (blue-blind)

#003D3C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183a42;
/* rgb */ color: rgb(24, 58, 66);
/* oklch */ color: oklch(32.7% 0.042 215.3);

Tailwind

colors: {
  custom: {
    50: '#5a7076',
    500: '#183a42',
    950: '#000000',
  },
}

SCSS

$custom: #183a42;
$custom-light: #5a7076;
$custom-dark: #000000;

JSON

{
  "hex": "#183a42",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 66
  },
  "hsl": {
    "h": 191.429,
    "s": 46.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.32685,
    "c": 0.04172,
    "h": 215.3
  },
  "luminance": 0.03614
}

Semantic roles & 50–950 ramp

primary

#183A42

secondary

#79493D

accent

#6B51D6

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183A42

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

Preview Lab → · Contrast checker → · Palette generator →