#042A39#042A39

#042A39 is a dark, muted cyan. Relative luminance 0.020; OKLCH L 26.8% C 0.049 H 229.5°. Best body text is #FFFFFF at 15.05:1 contrast (WCAG AA passes).

Color values

HEX	#042A39
RGB	rgb(4, 42, 57)
HSL	hsl(197, 87%, 12%)
HSV	hsv(197, 93%, 22%)
CMYK	cmyk(93%, 26.3%, 0%, 77.6%)
CIE-LAB	lab(15.37, -6.62, -13.32)
CIE-LCH	lch(15.37, 14.87, 243.56°)
OKLab	oklab(26.75% -0.032 -0.0375)
OKLCH	oklch(26.75% 0.049 229.5)
XYZ	xyz(1.6162, 1.9769, 4.1665)
Luminance	0.0198 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042A39 #391304

analogous

#04392E #042A39 #041039

triadic

#042A39 #39042A #2A3904

tetradic

#042A39 #2E0439 #391304 #103904

square

#042A39 #2E0439 #391304 #103904

split-complementary

#042A39 #390410 #392E04

monochromatic

#02151D #02151D #042A39 #085472 #0C7EAB

Accessibility & contrast

On white

15.05

#042A39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#042A39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042A39

15.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042A39	#FFFFFF	#000000	##FFFFFF
##042A39	1.00	15.05	1.40	15.05
#FFFFFF	15.05	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22293A

Deuteranopia (green-blind)

#1B2439

Tritanopia (blue-blind)

#002E2F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #042a39;
/* rgb */ color: rgb(4, 42, 57);
/* oklch */ color: oklch(26.8% 0.049 229.5);

Tailwind

colors: {
  custom: {
    50: '#4e636f',
    500: '#042a39',
    950: '#000000',
  },
}

SCSS

$custom: #042a39;
$custom-light: #4e636f;
$custom-dark: #000000;

JSON

{
  "hex": "#042a39",
  "rgb": {
    "r": 4,
    "g": 42,
    "b": 57
  },
  "hsl": {
    "h": 196.981,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.26752,
    "c": 0.04929,
    "h": 229.5
  },
  "luminance": 0.01977
}

Semantic roles & 50–950 ramp

primary

#042A39

secondary

#7B381E

accent

#662BFD

background

#F4F5F6

surface

#E7EAEC

border

#C3C6C7

text

#020507

muted

#78797A

Preview Lab

Preview with #042A39

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

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