#042440#042440

#042440 is a dark, moderate cyan. Relative luminance 0.017; OKLCH L 25.5% C 0.064 H 249.2°. Best body text is #FFFFFF at 15.77:1 contrast (WCAG AA passes).

Color values

HEX	#042440
RGB	rgb(4, 36, 64)
HSL	hsl(208, 88%, 13%)
HSV	hsv(208, 94%, 25%)
CMYK	cmyk(93.8%, 43.8%, 0%, 74.9%)
CIE-LAB	lab(13.58, 0.82, -21.03)
CIE-LCH	lch(13.58, 21.05, 272.23°)
OKLab	oklab(25.47% -0.0228 -0.0601)
OKLCH	oklch(25.47% 0.064 249.2)
XYZ	xyz(1.6060, 1.6575, 5.0848)
Luminance	0.0166 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042440 #402004

analogous

#04403E #042440 #040640

triadic

#042440 #400424 #244004

tetradic

#042440 #3E0440 #402004 #064004

square

#042440 #3E0440 #402004 #064004

split-complementary

#042440 #400406 #403E04

monochromatic

#02101D #02101D #042440 #08447A #0B65B3

Accessibility & contrast

On white

15.77

#042440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#042440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042440

15.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042440	#FFFFFF	#000000	##FFFFFF
##042440	1.00	15.77	1.33	15.77
#FFFFFF	15.77	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#162641

Deuteranopia (green-blind)

#0D203F

Tritanopia (blue-blind)

#002B2E

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #042440;
/* rgb */ color: rgb(4, 36, 64);
/* oklch */ color: oklch(25.5% 0.064 249.2);

Tailwind

colors: {
  custom: {
    50: '#505e75',
    500: '#042440',
    950: '#000000',
  },
}

SCSS

$custom: #042440;
$custom-light: #505e75;
$custom-dark: #000000;

JSON

{
  "hex": "#042440",
  "rgb": {
    "r": 4,
    "g": 36,
    "b": 64
  },
  "hsl": {
    "h": 208,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.25472,
    "c": 0.06427,
    "h": 249.2
  },
  "luminance": 0.01658
}

Semantic roles & 50–950 ramp

primary

#042440

secondary

#814D1F

accent

#8D29FE

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020408

muted

#78797B

Preview Lab

Preview with #042440

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

Preview Lab → · Contrast checker → · Palette generator →