#042F40#042F40

#042F40 is a dark, muted cyan. Relative luminance 0.024; OKLCH L 28.7% C 0.054 H 230.2°. Best body text is #FFFFFF at 14.13:1 contrast (WCAG AA passes).

Color values

HEX	#042F40
RGB	rgb(4, 47, 64)
HSL	hsl(197, 88%, 13%)
HSV	hsv(197, 94%, 25%)
CMYK	cmyk(93.8%, 26.6%, 0%, 74.9%)
CIE-LAB	lab(17.59, -6.95, -14.70)
CIE-LCH	lch(17.59, 16.27, 244.69°)
OKLab	oklab(28.66% -0.0345 -0.0414)
OKLCH	oklch(28.66% 0.054 230.2)
XYZ	xyz(1.9916, 2.4288, 5.2133)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042F40 #401504

analogous

#044033 #042F40 #041140

triadic

#042F40 #40042F #2F4004

tetradic

#042F40 #330440 #401504 #114004

square

#042F40 #330440 #401504 #114004

split-complementary

#042F40 #400411 #403304

monochromatic

#02151D #02151D #042F40 #08597A #0B84B3

Accessibility & contrast

On white

14.13

#042F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#042F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042F40

14.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042F40	#FFFFFF	#000000	##FFFFFF
##042F40	1.00	14.13	1.49	14.13
#FFFFFF	14.13	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#262E41

Deuteranopia (green-blind)

#1E2940

Tritanopia (blue-blind)

#003435

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #042f40;
/* rgb */ color: rgb(4, 47, 64);
/* oklch */ color: oklch(28.7% 0.054 230.2);

Tailwind

colors: {
  custom: {
    50: '#516775',
    500: '#042f40',
    950: '#000000',
  },
}

SCSS

$custom: #042f40;
$custom-light: #516775;
$custom-dark: #000000;

JSON

{
  "hex": "#042f40",
  "rgb": {
    "r": 4,
    "g": 47,
    "b": 64
  },
  "hsl": {
    "h": 197,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.28655,
    "c": 0.05394,
    "h": 230.2
  },
  "luminance": 0.02429
}

Semantic roles & 50–950 ramp

primary

#042F40

secondary

#813B1F

accent

#6629FE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#020608

muted

#787A7B

Preview Lab

Preview with #042F40

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

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