#042B3F#042B3F

#042B3F is a dark, muted cyan. Relative luminance 0.021; OKLCH L 27.4% C 0.056 H 236.7°. Best body text is #FFFFFF at 14.76:1 contrast (WCAG AA passes).

Color values

HEX	#042B3F
RGB	rgb(4, 43, 63)
HSL	hsl(200, 88%, 13%)
HSV	hsv(200, 94%, 25%)
CMYK	cmyk(93.7%, 31.7%, 0%, 75.3%)
CIE-LAB	lab(16.07, -4.67, -16.40)
CIE-LCH	lch(16.07, 17.05, 254.10°)
OKLab	oklab(27.42% -0.0305 -0.0464)
OKLCH	oklch(27.42% 0.056 236.7)
XYZ	xyz(1.8108, 2.1122, 5.0139)
Luminance	0.0211 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042B3F #3F1804

analogous

#043F35 #042B3F #040D3F

triadic

#042B3F #3F042B #2B3F04

tetradic

#042B3F #35043F #3F1804 #0D3F04

square

#042B3F #35043F #3F1804 #0D3F04

split-complementary

#042B3F #3F040D #3F3504

monochromatic

#02141D #02141D #042B3F #085279 #0B7AB2

Accessibility & contrast

On white

14.76

#042B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#042B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042B3F

14.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042B3F	#FFFFFF	#000000	##FFFFFF
##042B3F	1.00	14.76	1.42	14.76
#FFFFFF	14.76	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#212B40

Deuteranopia (green-blind)

#19263F

Tritanopia (blue-blind)

#003032

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #042b3f;
/* rgb */ color: rgb(4, 43, 63);
/* oklch */ color: oklch(27.4% 0.056 236.7);

Tailwind

colors: {
  custom: {
    50: '#506474',
    500: '#042b3f',
    950: '#000000',
  },
}

SCSS

$custom: #042b3f;
$custom-light: #506474;
$custom-dark: #000000;

JSON

{
  "hex": "#042b3f",
  "rgb": {
    "r": 4,
    "g": 43,
    "b": 63
  },
  "hsl": {
    "h": 200.339,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.27418,
    "c": 0.05557,
    "h": 236.7
  },
  "luminance": 0.02112
}

Semantic roles & 50–950 ramp

primary

#042B3F

secondary

#80401E

accent

#722AFE

background

#F4F5F7

surface

#E7EAED

border

#C3C6C8

text

#020508

muted

#78797B

Preview Lab

Preview with #042B3F

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

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