#042B40#042B40

#042B40 is a dark, muted cyan. Relative luminance 0.021; OKLCH L 27.5% C 0.057 H 238.0°. Best body text is #FFFFFF at 14.74:1 contrast (WCAG AA passes).

Color values

HEX	#042B40
RGB	rgb(4, 43, 64)
HSL	hsl(201, 88%, 13%)
HSV	hsv(201, 94%, 25%)
CMYK	cmyk(93.8%, 32.8%, 0%, 74.9%)
CIE-LAB	lab(16.12, -4.23, -17.00)
CIE-LCH	lch(16.12, 17.52, 256.04°)
OKLab	oklab(27.48% -0.0301 -0.0482)
OKLCH	oklch(27.48% 0.057 238)
XYZ	xyz(1.8390, 2.1235, 5.1624)
Luminance	0.0212 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042B40 #401904

analogous

#044037 #042B40 #040D40

triadic

#042B40 #40042B #2B4004

tetradic

#042B40 #370440 #401904 #0D4004

square

#042B40 #370440 #401904 #0D4004

split-complementary

#042B40 #40040D #403704

monochromatic

#02131D #02131D #042B40 #08527A #0B78B3

Accessibility & contrast

On white

14.74

#042B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#042B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042B40

14.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042B40	#FFFFFF	#000000	##FFFFFF
##042B40	1.00	14.74	1.42	14.74
#FFFFFF	14.74	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#212B41

Deuteranopia (green-blind)

#192640

Tritanopia (blue-blind)

#003032

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #042b40;
/* rgb */ color: rgb(4, 43, 64);
/* oklch */ color: oklch(27.5% 0.057 238.0);

Tailwind

colors: {
  custom: {
    50: '#506475',
    500: '#042b40',
    950: '#000000',
  },
}

SCSS

$custom: #042b40;
$custom-light: #506475;
$custom-dark: #000000;

JSON

{
  "hex": "#042b40",
  "rgb": {
    "r": 4,
    "g": 43,
    "b": 64
  },
  "hsl": {
    "h": 201,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.27482,
    "c": 0.05683,
    "h": 238
  },
  "luminance": 0.02124
}

Semantic roles & 50–950 ramp

primary

#042B40

secondary

#81411F

accent

#7429FE

background

#F4F5F7

surface

#E7EAED

border

#C3C6C8

text

#020508

muted

#78797B

Preview Lab

Preview with #042B40

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

Preview Lab → · Contrast checker → · Palette generator →