#042740#042740

#042740 is a dark, moderate cyan. Relative luminance 0.018; OKLCH L 26.3% C 0.061 H 244.8°. Best body text is #FFFFFF at 15.34:1 contrast (WCAG AA passes).

Color values

HEX	#042740
RGB	rgb(4, 39, 64)
HSL	hsl(205, 88%, 13%)
HSV	hsv(205, 94%, 25%)
CMYK	cmyk(93.8%, 39.1%, 0%, 74.9%)
CIE-LAB	lab(14.66, -1.39, -19.31)
CIE-LCH	lch(14.66, 19.36, 265.89°)
OKLab	oklab(26.33% -0.0259 -0.055)
OKLCH	oklch(26.33% 0.061 244.8)
XYZ	xyz(1.7006, 1.8468, 5.1163)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042740 #401D04

analogous

#04403B #042740 #040940

triadic

#042740 #400427 #274004

tetradic

#042740 #3B0440 #401D04 #094004

square

#042740 #3B0440 #401D04 #094004

split-complementary

#042740 #400409 #403B04

monochromatic

#02121D #02121D #042740 #084A7A #0B6DB3

Accessibility & contrast

On white

15.34

#042740 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#042740 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042740

15.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042740	#FFFFFF	#000000	##FFFFFF
##042740	1.00	15.34	1.37	15.34
#FFFFFF	15.34	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B2841

Deuteranopia (green-blind)

#122340

Tritanopia (blue-blind)

#002D30

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #042740;
/* rgb */ color: rgb(4, 39, 64);
/* oklch */ color: oklch(26.3% 0.061 244.8);

Tailwind

colors: {
  custom: {
    50: '#506075',
    500: '#042740',
    950: '#000000',
  },
}

SCSS

$custom: #042740;
$custom-light: #506075;
$custom-dark: #000000;

JSON

{
  "hex": "#042740",
  "rgb": {
    "r": 4,
    "g": 39,
    "b": 64
  },
  "hsl": {
    "h": 205,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.26326,
    "c": 0.06076,
    "h": 244.8
  },
  "luminance": 0.01847
}

Semantic roles & 50–950 ramp

primary

#042740

secondary

#81481F

accent

#8229FE

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020508

muted

#78797B

Preview Lab

Preview with #042740

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

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