#042F3A#042F3A

#042F3A is a dark, muted cyan. Relative luminance 0.024; OKLCH L 28.3% C 0.048 H 219.7°. Best body text is #FFFFFF at 14.26:1 contrast (WCAG AA passes).

Color values

HEX	#042F3A
RGB	rgb(4, 47, 58)
HSL	hsl(192, 87%, 12%)
HSV	hsv(192, 93%, 23%)
CMYK	cmyk(93.1%, 19%, 0%, 77.3%)
CIE-LAB	lab(17.29, -9.49, -11.03)
CIE-LCH	lch(17.29, 14.55, 229.30°)
OKLab	oklab(28.31% -0.0373 -0.0309)
OKLCH	oklch(28.31% 0.048 219.7)
XYZ	xyz(1.8300, 2.3641, 4.3620)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042F3A #3A0F04

analogous

#043A2A #042F3A #04143A

triadic

#042F3A #3A042F #2F3A04

tetradic

#042F3A #2A043A #3A0F04 #143A04

square

#042F3A #2A043A #3A0F04 #143A04

split-complementary

#042F3A #3A0414 #3A2A04

monochromatic

#02171D #02171D #042F3A #085D73 #0C8CAD

Accessibility & contrast

On white

14.26

#042F3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#042F3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042F3A

14.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042F3A	#FFFFFF	#000000	##FFFFFF
##042F3A	1.00	14.26	1.47	14.26
#FFFFFF	14.26	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282D3B

Deuteranopia (green-blind)

#21283A

Tritanopia (blue-blind)

#003333

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #042f3a;
/* rgb */ color: rgb(4, 47, 58);
/* oklch */ color: oklch(28.3% 0.048 219.7);

Tailwind

colors: {
  custom: {
    50: '#4f6770',
    500: '#042f3a',
    950: '#000000',
  },
}

SCSS

$custom: #042f3a;
$custom-light: #4f6770;
$custom-dark: #000000;

JSON

{
  "hex": "#042f3a",
  "rgb": {
    "r": 4,
    "g": 47,
    "b": 58
  },
  "hsl": {
    "h": 192.222,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.28314,
    "c": 0.04842,
    "h": 219.7
  },
  "luminance": 0.02364
}

Semantic roles & 50–950 ramp

primary

#042F3A

secondary

#7C311E

accent

#552BFD

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020607

muted

#787A7A

Preview Lab

Preview with #042F3A

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

Preview Lab → · Contrast checker → · Palette generator →