#042437#042437

#042437 is a very dark, muted cyan. Relative luminance 0.016; OKLCH L 24.8% C 0.051 H 239.5°. Best body text is #FFFFFF at 16.00:1 contrast (WCAG AA passes).

Color values

HEX	#042437
RGB	rgb(4, 36, 55)
HSL	hsl(202, 86%, 12%)
HSV	hsv(202, 93%, 22%)
CMYK	cmyk(92.7%, 34.5%, 0%, 78.4%)
CIE-LAB	lab(13.00, -3.33, -15.60)
CIE-LCH	lch(13.00, 15.95, 257.96°)
OKLab	oklab(24.83% -0.026 -0.0442)
OKLCH	oklch(24.83% 0.051 239.5)
XYZ	xyz(1.3703, 1.5632, 3.8432)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042437 #371704

analogous

#043731 #042437 #040B37

triadic

#042437 #370424 #243704

tetradic

#042437 #310437 #371704 #0B3704

square

#042437 #310437 #371704 #0B3704

split-complementary

#042437 #37040B #373104

monochromatic

#02131D #02131D #042437 #084970 #0C6FA9

Accessibility & contrast

On white

16.00

#042437 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#042437 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042437

16.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042437	#FFFFFF	#000000	##FFFFFF
##042437	1.00	16.00	1.31	16.00
#FFFFFF	16.00	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B2438

Deuteranopia (green-blind)

#141F37

Tritanopia (blue-blind)

#00292B

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #042437;
/* rgb */ color: rgb(4, 36, 55);
/* oklch */ color: oklch(24.8% 0.051 239.5);

Tailwind

colors: {
  custom: {
    50: '#4d5e6e',
    500: '#042437',
    950: '#000000',
  },
}

SCSS

$custom: #042437;
$custom-light: #4d5e6e;
$custom-dark: #000000;

JSON

{
  "hex": "#042437",
  "rgb": {
    "r": 4,
    "g": 36,
    "b": 55
  },
  "hsl": {
    "h": 202.353,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.24834,
    "c": 0.05129,
    "h": 239.5
  },
  "luminance": 0.01563
}

Semantic roles & 50–950 ramp

primary

#042437

secondary

#79401E

accent

#792BFD

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020407

muted

#78797A

Preview Lab

Preview with #042437

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

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