#042037#042037

#042037 is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.7% C 0.056 H 247.1°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#042037
RGB	rgb(4, 32, 55)
HSL	hsl(207, 86%, 12%)
HSV	hsv(207, 93%, 22%)
CMYK	cmyk(92.7%, 41.8%, 0%, 78.4%)
CIE-LAB	lab(11.51, -0.39, -17.95)
CIE-LCH	lch(11.51, 17.95, 268.75°)
OKLab	oklab(23.66% -0.0216 -0.0511)
OKLCH	oklch(23.66% 0.056 247.1)
XYZ	xyz(1.2559, 1.3345, 3.8051)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042037 #371B04

analogous

#043735 #042037 #040637

triadic

#042037 #370420 #203704

tetradic

#042037 #350437 #371B04 #063704

square

#042037 #350437 #371B04 #063704

split-complementary

#042037 #370406 #373504

monochromatic

#02111D #02111D #042037 #084170 #0C62A9

Accessibility & contrast

On white

16.57

#042037 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#042037 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042037

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042037	#FFFFFF	#000000	##FFFFFF
##042037	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#152138

Deuteranopia (green-blind)

#0D1C37

Tritanopia (blue-blind)

#002628

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #042037;
/* rgb */ color: rgb(4, 32, 55);
/* oklch */ color: oklch(23.7% 0.056 247.1);

Tailwind

colors: {
  custom: {
    50: '#4d5b6e',
    500: '#042037',
    950: '#000000',
  },
}

SCSS

$custom: #042037;
$custom-light: #4d5b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#042037",
  "rgb": {
    "r": 4,
    "g": 32,
    "b": 55
  },
  "hsl": {
    "h": 207.059,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.23656,
    "c": 0.05551,
    "h": 247.1
  },
  "luminance": 0.01335
}

Semantic roles & 50–950 ramp

primary

#042037

secondary

#79471E

accent

#8A2BFD

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020407

muted

#78797A

Preview Lab

Preview with #042037

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

Preview Lab → · Contrast checker → · Palette generator →