#042133#042133

#042133 is a very dark, muted cyan. Relative luminance 0.014; OKLCH L 23.7% C 0.049 H 240.1°. Best body text is #FFFFFF at 16.53:1 contrast (WCAG AA passes).

Color values

HEX	#042133
RGB	rgb(4, 33, 51)
HSL	hsl(203, 85%, 11%)
HSV	hsv(203, 92%, 20%)
CMYK	cmyk(92.2%, 35.3%, 0%, 80%)
CIE-LAB	lab(11.64, -2.98, -14.89)
CIE-LCH	lch(11.64, 15.19, 258.67°)
OKLab	oklab(23.67% -0.0242 -0.0422)
OKLCH	oklch(23.67% 0.049 240.1)
XYZ	xyz(1.1912, 1.3524, 3.3296)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#042133 #331604

analogous

#04332D #042133 #040933

triadic

#042133 #330421 #213304

tetradic

#042133 #2D0433 #331604 #093304

square

#042133 #2D0433 #331604 #093304

split-complementary

#042133 #330409 #332D04

monochromatic

#02121C #02121C #042133 #08466C #0D6AA4

Accessibility & contrast

On white

16.53

#042133 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#042133 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #042133

16.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##042133	#FFFFFF	#000000	##FFFFFF
##042133	1.00	16.53	1.27	16.53
#FFFFFF	16.53	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#182134

Deuteranopia (green-blind)

#121D33

Tritanopia (blue-blind)

#002627

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #042133;
/* rgb */ color: rgb(4, 33, 51);
/* oklch */ color: oklch(23.7% 0.049 240.1);

Tailwind

colors: {
  custom: {
    50: '#4c5c6a',
    500: '#042133',
    950: '#000000',
  },
}

SCSS

$custom: #042133;
$custom-light: #4c5c6a;
$custom-dark: #000000;

JSON

{
  "hex": "#042133",
  "rgb": {
    "r": 4,
    "g": 33,
    "b": 51
  },
  "hsl": {
    "h": 202.979,
    "s": 85.455,
    "l": 10.784
  },
  "oklch": {
    "l": 0.23671,
    "c": 0.04865,
    "h": 240.1
  },
  "luminance": 0.01353
}

Semantic roles & 50–950 ramp

primary

#042133

secondary

#753F1D

accent

#7C2CFC

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010406

muted

#77797A

Preview Lab

Preview with #042133

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

Preview Lab → · Contrast checker → · Palette generator →