#042640#042640

#042640 is a dark, moderate cyan. Relative luminance 0.018; OKLCH L 26.0% C 0.062 H 246.3°. Best body text is #FFFFFF at 15.48:1 contrast (WCAG AA passes).

Color values

HEX	#042640
RGB	rgb(4, 38, 64)
HSL	hsl(206, 88%, 13%)
HSV	hsv(206, 94%, 25%)
CMYK	cmyk(93.8%, 40.6%, 0%, 74.9%)
CIE-LAB	lab(14.30, -0.66, -19.88)
CIE-LCH	lch(14.30, 19.89, 268.10°)
OKLab	oklab(26.04% -0.0249 -0.0567)
OKLCH	oklch(26.04% 0.062 246.3)
XYZ	xyz(1.6682, 1.7820, 5.1055)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042640 #401E04

analogous

#04403C #042640 #040840

triadic

#042640 #400426 #264004

tetradic

#042640 #3C0440 #401E04 #084004

square

#042640 #3C0440 #401E04 #084004

split-complementary

#042640 #400408 #403C04

monochromatic

#02111D #02111D #042640 #08487A #0B6AB3

Accessibility & contrast

On white

15.48

#042640 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#042640 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042640

15.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042640	#FFFFFF	#000000	##FFFFFF
##042640	1.00	15.48	1.36	15.48
#FFFFFF	15.48	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A2741

Deuteranopia (green-blind)

#112240

Tritanopia (blue-blind)

#002C2F

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #042640;
/* rgb */ color: rgb(4, 38, 64);
/* oklch */ color: oklch(26.0% 0.062 246.3);

Tailwind

colors: {
  custom: {
    50: '#505f75',
    500: '#042640',
    950: '#000000',
  },
}

SCSS

$custom: #042640;
$custom-light: #505f75;
$custom-dark: #000000;

JSON

{
  "hex": "#042640",
  "rgb": {
    "r": 4,
    "g": 38,
    "b": 64
  },
  "hsl": {
    "h": 206,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.26039,
    "c": 0.06189,
    "h": 246.3
  },
  "luminance": 0.01782
}

Semantic roles & 50–950 ramp

primary

#042640

secondary

#81491F

accent

#8629FE

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020408

muted

#78797B

Preview Lab

Preview with #042640

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

Preview Lab → · Contrast checker → · Palette generator →