#042F39#042F39

#042F39 is a dark, muted cyan. Relative luminance 0.024; OKLCH L 28.3% C 0.048 H 217.7°. Best body text is #FFFFFF at 14.28:1 contrast (WCAG AA passes).

Color values

HEX	#042F39
RGB	rgb(4, 47, 57)
HSL	hsl(191, 87%, 12%)
HSV	hsv(191, 93%, 22%)
CMYK	cmyk(93%, 17.5%, 0%, 77.6%)
CIE-LAB	lab(17.25, -9.90, -10.41)
CIE-LCH	lch(17.25, 14.37, 226.44°)
OKLab	oklab(28.26% -0.0378 -0.0291)
OKLCH	oklch(28.26% 0.048 217.7)
XYZ	xyz(1.8048, 2.3540, 4.2294)
Luminance	0.0235 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042F39 #390E04

analogous

#043929 #042F39 #041539

triadic

#042F39 #39042F #2F3904

tetradic

#042F39 #290439 #390E04 #153904

square

#042F39 #290439 #390E04 #153904

split-complementary

#042F39 #390415 #392904

monochromatic

#02181D #02181D #042F39 #085E72 #0C8DAB

Accessibility & contrast

On white

14.28

#042F39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#042F39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042F39

14.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042F39	#FFFFFF	#000000	##FFFFFF
##042F39	1.00	14.28	1.47	14.28
#FFFFFF	14.28	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292D3A

Deuteranopia (green-blind)

#212839

Tritanopia (blue-blind)

#003232

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #042f39;
/* rgb */ color: rgb(4, 47, 57);
/* oklch */ color: oklch(28.3% 0.048 217.7);

Tailwind

colors: {
  custom: {
    50: '#4f676f',
    500: '#042f39',
    950: '#000000',
  },
}

SCSS

$custom: #042f39;
$custom-light: #4f676f;
$custom-dark: #000000;

JSON

{
  "hex": "#042f39",
  "rgb": {
    "r": 4,
    "g": 47,
    "b": 57
  },
  "hsl": {
    "h": 191.321,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.28261,
    "c": 0.0477,
    "h": 217.7
  },
  "luminance": 0.02354
}

Semantic roles & 50–950 ramp

primary

#042F39

secondary

#7B2F1E

accent

#522BFD

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020607

muted

#787A7A

Preview Lab

Preview with #042F39

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

Preview Lab → · Contrast checker → · Palette generator →