#042D3F#042D3F

#042D3F is a dark, muted cyan. Relative luminance 0.023; OKLCH L 28.0% C 0.054 H 232.7°. Best body text is #FFFFFF at 14.46:1 contrast (WCAG AA passes).

Color values

HEX	#042D3F
RGB	rgb(4, 45, 63)
HSL	hsl(198, 88%, 13%)
HSV	hsv(198, 94%, 25%)
CMYK	cmyk(93.7%, 28.6%, 0%, 75.3%)
CIE-LAB	lab(16.80, -6.04, -15.25)
CIE-LCH	lch(16.80, 16.40, 248.39°)
OKLab	oklab(28.01% -0.0327 -0.043)
OKLCH	oklch(28.01% 0.054 232.7)
XYZ	xyz(1.8853, 2.2612, 5.0388)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042D3F #3F1604

analogous

#043F33 #042D3F #040F3F

triadic

#042D3F #3F042D #2D3F04

tetradic

#042D3F #33043F #3F1604 #0F3F04

square

#042D3F #33043F #3F1604 #0F3F04

split-complementary

#042D3F #3F040F #3F3304

monochromatic

#02151D #02151D #042D3F #085679 #0B7FB2

Accessibility & contrast

On white

14.46

#042D3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#042D3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042D3F

14.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042D3F	#FFFFFF	#000000	##FFFFFF
##042D3F	1.00	14.46	1.45	14.46
#FFFFFF	14.46	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#242C40

Deuteranopia (green-blind)

#1C273F

Tritanopia (blue-blind)

#003233

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #042d3f;
/* rgb */ color: rgb(4, 45, 63);
/* oklch */ color: oklch(28.0% 0.054 232.7);

Tailwind

colors: {
  custom: {
    50: '#506574',
    500: '#042d3f',
    950: '#000000',
  },
}

SCSS

$custom: #042d3f;
$custom-light: #506574;
$custom-dark: #000000;

JSON

{
  "hex": "#042d3f",
  "rgb": {
    "r": 4,
    "g": 45,
    "b": 63
  },
  "hsl": {
    "h": 198.305,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.28006,
    "c": 0.05409,
    "h": 232.7
  },
  "luminance": 0.02261
}

Semantic roles & 50–950 ramp

primary

#042D3F

secondary

#803C1E

accent

#6A2AFE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#020508

muted

#787A7B

Preview Lab

Preview with #042D3F

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

Preview Lab → · Contrast checker → · Palette generator →