#042C3F#042C3F

#042C3F is a dark, muted cyan. Relative luminance 0.022; OKLCH L 27.7% C 0.055 H 234.7°. Best body text is #FFFFFF at 14.61:1 contrast (WCAG AA passes).

Color values

HEX	#042C3F
RGB	rgb(4, 44, 63)
HSL	hsl(199, 88%, 13%)
HSV	hsv(199, 94%, 25%)
CMYK	cmyk(93.7%, 30.2%, 0%, 75.3%)
CIE-LAB	lab(16.43, -5.36, -15.82)
CIE-LCH	lch(16.43, 16.71, 251.29°)
OKLab	oklab(27.71% -0.0316 -0.0447)
OKLCH	oklch(27.71% 0.055 234.7)
XYZ	xyz(1.8476, 2.1858, 5.0262)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042C3F #3F1704

analogous

#043F34 #042C3F #040E3F

triadic

#042C3F #3F042C #2C3F04

tetradic

#042C3F #34043F #3F1704 #0E3F04

square

#042C3F #34043F #3F1704 #0E3F04

split-complementary

#042C3F #3F040E #3F3404

monochromatic

#02141D #02141D #042C3F #085479 #0B7CB2

Accessibility & contrast

On white

14.61

#042C3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#042C3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042C3F

14.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042C3F	#FFFFFF	#000000	##FFFFFF
##042C3F	1.00	14.61	1.44	14.61
#FFFFFF	14.61	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#232C40

Deuteranopia (green-blind)

#1B263F

Tritanopia (blue-blind)

#003133

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #042c3f;
/* rgb */ color: rgb(4, 44, 63);
/* oklch */ color: oklch(27.7% 0.055 234.7);

Tailwind

colors: {
  custom: {
    50: '#506574',
    500: '#042c3f',
    950: '#000000',
  },
}

SCSS

$custom: #042c3f;
$custom-light: #506574;
$custom-dark: #000000;

JSON

{
  "hex": "#042c3f",
  "rgb": {
    "r": 4,
    "g": 44,
    "b": 63
  },
  "hsl": {
    "h": 199.322,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.27712,
    "c": 0.05479,
    "h": 234.7
  },
  "luminance": 0.02186
}

Semantic roles & 50–950 ramp

primary

#042C3F

secondary

#803E1E

accent

#6E2AFE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#020508

muted

#787A7B

Preview Lab

Preview with #042C3F

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

Preview Lab → · Contrast checker → · Palette generator →