#042D40#042D40

#042D40 is a dark, muted cyan. Relative luminance 0.023; OKLCH L 28.1% C 0.055 H 234.2°. Best body text is #FFFFFF at 14.44:1 contrast (WCAG AA passes).

Color values

HEX	#042D40
RGB	rgb(4, 45, 64)
HSL	hsl(199, 88%, 13%)
HSV	hsv(199, 94%, 25%)
CMYK	cmyk(93.8%, 29.7%, 0%, 74.9%)
CIE-LAB	lab(16.86, -5.61, -15.85)
CIE-LCH	lch(16.86, 16.82, 250.53°)
OKLab	oklab(28.07% -0.0323 -0.0448)
OKLCH	oklch(28.07% 0.055 234.2)
XYZ	xyz(1.9135, 2.2725, 5.1873)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042D40 #401704

analogous

#044035 #042D40 #040F40

triadic

#042D40 #40042D #2D4004

tetradic

#042D40 #350440 #401704 #0F4004

square

#042D40 #350440 #401704 #0F4004

split-complementary

#042D40 #40040F #403504

monochromatic

#02141D #02141D #042D40 #08557A #0B7EB3

Accessibility & contrast

On white

14.44

#042D40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#042D40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042D40

14.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042D40	#FFFFFF	#000000	##FFFFFF
##042D40	1.00	14.44	1.45	14.44
#FFFFFF	14.44	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#242D41

Deuteranopia (green-blind)

#1C2740

Tritanopia (blue-blind)

#003234

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #042d40;
/* rgb */ color: rgb(4, 45, 64);
/* oklch */ color: oklch(28.1% 0.055 234.2);

Tailwind

colors: {
  custom: {
    50: '#506575',
    500: '#042d40',
    950: '#000000',
  },
}

SCSS

$custom: #042d40;
$custom-light: #506575;
$custom-dark: #000000;

JSON

{
  "hex": "#042d40",
  "rgb": {
    "r": 4,
    "g": 45,
    "b": 64
  },
  "hsl": {
    "h": 199,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.28067,
    "c": 0.05524,
    "h": 234.2
  },
  "luminance": 0.02273
}

Semantic roles & 50–950 ramp

primary

#042D40

secondary

#813E1F

accent

#6D29FE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#020508

muted

#787A7B

Preview Lab

Preview with #042D40

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

Preview Lab → · Contrast checker → · Palette generator →