#042B39#042B39

#042B39 is a dark, muted cyan. Relative luminance 0.020; OKLCH L 27.1% C 0.049 H 227.2°. Best body text is #FFFFFF at 14.90:1 contrast (WCAG AA passes).

Color values

HEX	#042B39
RGB	rgb(4, 43, 57)
HSL	hsl(196, 87%, 12%)
HSV	hsv(196, 93%, 22%)
CMYK	cmyk(93%, 24.6%, 0%, 77.6%)
CIE-LAB	lab(15.74, -7.29, -12.73)
CIE-LCH	lch(15.74, 14.68, 240.20°)
OKLab	oklab(27.05% -0.0331 -0.0358)
OKLCH	oklch(27.05% 0.049 227.2)
XYZ	xyz(1.6522, 2.0488, 4.1785)
Luminance	0.0205 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042B39 #391204

analogous

#04392D #042B39 #041139

triadic

#042B39 #39042B #2B3904

tetradic

#042B39 #2D0439 #391204 #113904

square

#042B39 #2D0439 #391204 #113904

split-complementary

#042B39 #390411 #392D04

monochromatic

#02161D #02161D #042B39 #085672 #0C81AB

Accessibility & contrast

On white

14.90

#042B39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#042B39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042B39

14.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042B39	#FFFFFF	#000000	##FFFFFF
##042B39	1.00	14.90	1.41	14.90
#FFFFFF	14.90	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#242A3A

Deuteranopia (green-blind)

#1C2539

Tritanopia (blue-blind)

#002F30

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #042b39;
/* rgb */ color: rgb(4, 43, 57);
/* oklch */ color: oklch(27.1% 0.049 227.2);

Tailwind

colors: {
  custom: {
    50: '#4f646f',
    500: '#042b39',
    950: '#000000',
  },
}

SCSS

$custom: #042b39;
$custom-light: #4f646f;
$custom-dark: #000000;

JSON

{
  "hex": "#042b39",
  "rgb": {
    "r": 4,
    "g": 43,
    "b": 57
  },
  "hsl": {
    "h": 195.849,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.27053,
    "c": 0.04879,
    "h": 227.2
  },
  "luminance": 0.02049
}

Semantic roles & 50–950 ramp

primary

#042B39

secondary

#7B361E

accent

#622BFD

background

#F4F5F6

surface

#E7EAEC

border

#C3C6C7

text

#020507

muted

#78797A

Preview Lab

Preview with #042B39

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

Preview Lab → · Contrast checker → · Palette generator →