#042337#042337

#042337 is a very dark, muted cyan. Relative luminance 0.015; OKLCH L 24.5% C 0.052 H 241.5°. Best body text is #FFFFFF at 16.14:1 contrast (WCAG AA passes).

Color values

HEX	#042337
RGB	rgb(4, 35, 55)
HSL	hsl(204, 86%, 12%)
HSV	hsv(204, 93%, 22%)
CMYK	cmyk(92.7%, 36.4%, 0%, 78.4%)
CIE-LAB	lab(12.63, -2.61, -16.19)
CIE-LCH	lch(12.63, 16.40, 260.85°)
OKLab	oklab(24.54% -0.0249 -0.0459)
OKLCH	oklch(24.54% 0.052 241.5)
XYZ	xyz(1.3404, 1.5035, 3.8333)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042337 #371804

analogous

#043732 #042337 #040A37

triadic

#042337 #370423 #233704

tetradic

#042337 #320437 #371804 #0A3704

square

#042337 #320437 #371804 #0A3704

split-complementary

#042337 #37040A #373204

monochromatic

#02121D #02121D #042337 #084770 #0C6CA9

Accessibility & contrast

On white

16.14

#042337 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#042337 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042337

16.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042337	#FFFFFF	#000000	##FFFFFF
##042337	1.00	16.14	1.30	16.14
#FFFFFF	16.14	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A2338

Deuteranopia (green-blind)

#121F37

Tritanopia (blue-blind)

#00282A

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #042337;
/* rgb */ color: rgb(4, 35, 55);
/* oklch */ color: oklch(24.5% 0.052 241.5);

Tailwind

colors: {
  custom: {
    50: '#4d5d6e',
    500: '#042337',
    950: '#000000',
  },
}

SCSS

$custom: #042337;
$custom-light: #4d5d6e;
$custom-dark: #000000;

JSON

{
  "hex": "#042337",
  "rgb": {
    "r": 4,
    "g": 35,
    "b": 55
  },
  "hsl": {
    "h": 203.529,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.24537,
    "c": 0.05224,
    "h": 241.5
  },
  "luminance": 0.01504
}

Semantic roles & 50–950 ramp

primary

#042337

secondary

#79421E

accent

#7D2BFD

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020407

muted

#78797A

Preview Lab

Preview with #042337

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

Preview Lab → · Contrast checker → · Palette generator →