#042937#042937

#042937 is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.3% C 0.048 H 228.3°. Best body text is #FFFFFF at 15.24:1 contrast (WCAG AA passes).

Color values

HEX	#042937
RGB	rgb(4, 41, 55)
HSL	hsl(196, 86%, 12%)
HSV	hsv(196, 93%, 22%)
CMYK	cmyk(92.7%, 25.5%, 0%, 78.4%)
CIE-LAB	lab(14.88, -6.81, -12.66)
CIE-LCH	lch(14.88, 14.38, 241.72°)
OKLab	oklab(26.33% -0.0317 -0.0356)
OKLCH	oklch(26.33% 0.048 228.3)
XYZ	xyz(1.5323, 1.8873, 3.8972)
Luminance	0.0189 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042937 #371204

analogous

#04372C #042937 #041037

triadic

#042937 #370429 #293704

tetradic

#042937 #2C0437 #371204 #103704

square

#042937 #2C0437 #371204 #103704

split-complementary

#042937 #370410 #372C04

monochromatic

#02151D #02151D #042937 #085470 #0C7EA9

Accessibility & contrast

On white

15.24

#042937 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#042937 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042937

15.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042937	#FFFFFF	#000000	##FFFFFF
##042937	1.00	15.24	1.38	15.24
#FFFFFF	15.24	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#222838

Deuteranopia (green-blind)

#1B2337

Tritanopia (blue-blind)

#002D2E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #042937;
/* rgb */ color: rgb(4, 41, 55);
/* oklch */ color: oklch(26.3% 0.048 228.3);

Tailwind

colors: {
  custom: {
    50: '#4e626d',
    500: '#042937',
    950: '#000000',
  },
}

SCSS

$custom: #042937;
$custom-light: #4e626d;
$custom-dark: #000000;

JSON

{
  "hex": "#042937",
  "rgb": {
    "r": 4,
    "g": 41,
    "b": 55
  },
  "hsl": {
    "h": 196.471,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.26332,
    "c": 0.04772,
    "h": 228.3
  },
  "luminance": 0.01888
}

Semantic roles & 50–950 ramp

primary

#042937

secondary

#79371E

accent

#652BFD

background

#F4F5F6

surface

#E7EAEB

border

#C3C6C6

text

#020507

muted

#78797A

Preview Lab

Preview with #042937

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

Preview Lab → · Contrast checker → · Palette generator →