#04022B#04022B

#04022B is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 14.4% C 0.082 H 272.9°. Best body text is #FFFFFF at 20.02:1 contrast (WCAG AA passes).

Color values

HEX	#04022B
RGB	rgb(4, 2, 43)
HSL	hsl(243, 91%, 9%)
HSV	hsv(243, 95%, 17%)
CMYK	cmyk(90.7%, 95.3%, 0%, 83.1%)
CIE-LAB	lab(2.20, 11.31, -23.95)
CIE-LCH	lch(2.20, 26.49, 295.28°)
OKLab	oklab(14.35% 0.0041 -0.0822)
OKLCH	oklch(14.35% 0.082 272.9)
XYZ	xyz(0.5077, 0.2436, 2.3053)
Luminance	0.0024 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04022B #292B02

analogous

#02152B #04022B #19022B

triadic

#04022B #2B0402 #022B04

tetradic

#04022B #2B0215 #292B02 #022B19

square

#04022B #2B0215 #292B02 #022B19

split-complementary

#04022B #2B1902 #152B02

monochromatic

#03011D #03011D #04022B #090565 #0F07A0

Accessibility & contrast

On white

20.02

#04022B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#04022B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04022B

20.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04022B	#FFFFFF	#000000	##FFFFFF
##04022B	1.00	20.02	1.05	20.02
#FFFFFF	20.02	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	20.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000A2C

Deuteranopia (green-blind)

#00062A

Tritanopia (blue-blind)

#000D16

Achromatopsia (no color)

#080808

Design tokens & code

CSS

--color: #04022b;
/* rgb */ color: rgb(4, 2, 43);
/* oklch */ color: oklch(14.4% 0.082 272.9);

Tailwind

colors: {
  custom: {
    50: '#494764',
    500: '#04022b',
    950: '#000000',
  },
}

SCSS

$custom: #04022b;
$custom-light: #494764;
$custom-dark: #000000;

JSON

{
  "hex": "#04022b",
  "rgb": {
    "r": 4,
    "g": 2,
    "b": 43
  },
  "hsl": {
    "h": 242.927,
    "s": 91.111,
    "l": 8.824
  },
  "oklch": {
    "l": 0.14354,
    "c": 0.08229,
    "h": 272.9
  },
  "luminance": 0.00244
}

Semantic roles & 50–950 ramp

primary

#04022B

secondary

#6C7019

accent

#FF29F5

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010005

muted

#77777A

Preview Lab

Preview with #04022B

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

Preview Lab → · Contrast checker → · Palette generator →