#000421#000421

#000421 is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 13.0% C 0.066 H 263.0°. Best body text is #FFFFFF at 20.20:1 contrast (WCAG AA passes).

Color values

HEX	#000421
RGB	rgb(0, 4, 33)
HSL	hsl(233, 100%, 6%)
HSV	hsv(233, 100%, 13%)
CMYK	cmyk(100%, 87.9%, 0%, 87.1%)
CIE-LAB	lab(1.78, 5.36, -16.86)
CIE-LCH	lch(1.78, 17.70, 287.64°)
OKLab	oklab(13% -0.008 -0.0652)
OKLCH	oklch(13% 0.066 263)
XYZ	xyz(0.3178, 0.1966, 1.4597)
Luminance	0.0020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.63

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000421 #211D00

analogous

#001521 #000421 #0D0021

triadic

#000421 #210004 #042100

tetradic

#000421 #210015 #211D00 #00210D

square

#000421 #210015 #211D00 #00210D

split-complementary

#000421 #210D00 #152100

monochromatic

#00041F #00041F #000421 #000B5E #00139B

Accessibility & contrast

On white

20.20

#000421 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#000421 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000421

20.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000421	#FFFFFF	#000000	##FFFFFF
##000421	1.00	20.20	1.04	20.20
#FFFFFF	20.20	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000822

Deuteranopia (green-blind)

#000520

Tritanopia (blue-blind)

#000B11

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #000421;
/* rgb */ color: rgb(0, 4, 33);
/* oklch */ color: oklch(13.0% 0.066 263.0);

Tailwind

colors: {
  custom: {
    50: '#46485c',
    500: '#000421',
    950: '#000000',
  },
}

SCSS

$custom: #000421;
$custom-light: #46485c;
$custom-dark: #000000;

JSON

{
  "hex": "#000421",
  "rgb": {
    "r": 0,
    "g": 4,
    "b": 33
  },
  "hsl": {
    "h": 232.727,
    "s": 100,
    "l": 6.471
  },
  "oklch": {
    "l": 0.12998,
    "c": 0.06568,
    "h": 263
  },
  "luminance": 0.00197
}

Semantic roles & 50–950 ramp

primary

#000421

secondary

#6A5F13

accent

#E529FF

background

#F3F4F5

surface

#E5E6E9

border

#C1C2C5

text

#000004

muted

#767779

Preview Lab

Preview with #000421

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

Preview Lab → · Contrast checker → · Palette generator →