#042939#042939

#042939 is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.5% C 0.050 H 231.8°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#042939
RGB	rgb(4, 41, 57)
HSL	hsl(198, 87%, 12%)
HSV	hsv(198, 93%, 22%)
CMYK	cmyk(93%, 28.1%, 0%, 77.6%)
CIE-LAB	lab(14.99, -5.94, -13.90)
CIE-LCH	lch(14.99, 15.12, 246.86°)
OKLab	oklab(26.45% -0.0308 -0.0392)
OKLCH	oklch(26.45% 0.05 231.8)
XYZ	xyz(1.5812, 1.9069, 4.1548)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042939 #391404

analogous

#04392F #042939 #040F39

triadic

#042939 #390429 #293904

tetradic

#042939 #2F0439 #391404 #0F3904

square

#042939 #2F0439 #391404 #0F3904

split-complementary

#042939 #39040F #392F04

monochromatic

#02151D #02151D #042939 #085272 #0C7BAB

Accessibility & contrast

On white

15.20

#042939 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#042939 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042939

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042939	#FFFFFF	#000000	##FFFFFF
##042939	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21283A

Deuteranopia (green-blind)

#1A2339

Tritanopia (blue-blind)

#002D2E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #042939;
/* rgb */ color: rgb(4, 41, 57);
/* oklch */ color: oklch(26.5% 0.050 231.8);

Tailwind

colors: {
  custom: {
    50: '#4e626f',
    500: '#042939',
    950: '#000000',
  },
}

SCSS

$custom: #042939;
$custom-light: #4e626f;
$custom-dark: #000000;

JSON

{
  "hex": "#042939",
  "rgb": {
    "r": 4,
    "g": 41,
    "b": 57
  },
  "hsl": {
    "h": 198.113,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.26452,
    "c": 0.04988,
    "h": 231.8
  },
  "luminance": 0.01907
}

Semantic roles & 50–950 ramp

primary

#042939

secondary

#7B3A1E

accent

#6A2BFD

background

#F4F5F6

surface

#E7EAEC

border

#C3C6C7

text

#020507

muted

#78797A

Preview Lab

Preview with #042939

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

Preview Lab → · Contrast checker → · Palette generator →