#042D3B#042D3B

#042D3B is a dark, muted cyan. Relative luminance 0.022; OKLCH L 27.8% C 0.050 H 226.2°. Best body text is #FFFFFF at 14.55:1 contrast (WCAG AA passes).

Color values

HEX	#042D3B
RGB	rgb(4, 45, 59)
HSL	hsl(195, 87%, 12%)
HSV	hsv(195, 93%, 23%)
CMYK	cmyk(93.2%, 23.7%, 0%, 76.9%)
CIE-LAB	lab(16.59, -7.77, -12.81)
CIE-LCH	lch(16.59, 14.98, 238.76°)
OKLab	oklab(27.77% -0.0345 -0.036)
OKLCH	oklch(27.77% 0.05 226.2)
XYZ	xyz(1.7775, 2.2181, 4.4713)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042D3B #3B1204

analogous

#043B2E #042D3B #04113B

triadic

#042D3B #3B042D #2D3B04

tetradic

#042D3B #2E043B #3B1204 #113B04

square

#042D3B #2E043B #3B1204 #113B04

split-complementary

#042D3B #3B0411 #3B2E04

monochromatic

#02161D #02161D #042D3B #085974 #0C84AE

Accessibility & contrast

On white

14.55

#042D3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#042D3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042D3B

14.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042D3B	#FFFFFF	#000000	##FFFFFF
##042D3B	1.00	14.55	1.44	14.55
#FFFFFF	14.55	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#252C3C

Deuteranopia (green-blind)

#1E273B

Tritanopia (blue-blind)

#003132

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #042d3b;
/* rgb */ color: rgb(4, 45, 59);
/* oklch */ color: oklch(27.8% 0.050 226.2);

Tailwind

colors: {
  custom: {
    50: '#4f6571',
    500: '#042d3b',
    950: '#000000',
  },
}

SCSS

$custom: #042d3b;
$custom-light: #4f6571;
$custom-dark: #000000;

JSON

{
  "hex": "#042d3b",
  "rgb": {
    "r": 4,
    "g": 45,
    "b": 59
  },
  "hsl": {
    "h": 195.273,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.27769,
    "c": 0.04987,
    "h": 226.2
  },
  "luminance": 0.02218
}

Semantic roles & 50–950 ramp

primary

#042D3B

secondary

#7D361E

accent

#602AFD

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020507

muted

#787A7A

Preview Lab

Preview with #042D3B

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

Preview Lab → · Contrast checker → · Palette generator →