#21042B#21042B

#21042B is a very dark, moderate purple. Relative luminance 0.006; OKLCH L 19.1% C 0.080 H 316.1°. Best body text is #FFFFFF at 18.80:1 contrast (WCAG AA passes).

Color values

HEX	#21042B
RGB	rgb(33, 4, 43)
HSL	hsl(285, 83%, 9%)
HSV	hsv(285, 91%, 17%)
CMYK	cmyk(23.3%, 90.7%, 0%, 83.1%)
CIE-LAB	lab(5.28, 21.60, -18.91)
CIE-LCH	lch(5.28, 28.71, 318.79°)
OKLab	oklab(19.05% 0.0574 -0.0552)
OKLCH	oklch(19.05% 0.08 316.1)
XYZ	xyz(1.1066, 0.5846, 2.3396)
Luminance	0.0059 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21042B #0E2B04

analogous

#0E042B #21042B #2B0422

triadic

#21042B #2B2104 #042B21

tetradic

#21042B #2B0E04 #0E2B04 #04222B

square

#21042B #2B0E04 #0E2B04 #04222B

split-complementary

#21042B #222B04 #042B0E

monochromatic

#15031C #15031C #21042B #4C0963 #770E9B

Accessibility & contrast

On white

18.80

#21042B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#21042B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21042B

18.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21042B	#FFFFFF	#000000	##FFFFFF
##21042B	1.00	18.80	1.12	18.80
#FFFFFF	18.80	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00102C

Deuteranopia (green-blind)

#04122A

Tritanopia (blue-blind)

#200B16

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #21042b;
/* rgb */ color: rgb(33, 4, 43);
/* oklch */ color: oklch(19.1% 0.080 316.1);

Tailwind

colors: {
  custom: {
    50: '#5d4864',
    500: '#21042b',
    950: '#000000',
  },
}

SCSS

$custom: #21042b;
$custom-light: #5d4864;
$custom-dark: #000000;

JSON

{
  "hex": "#21042b",
  "rgb": {
    "r": 33,
    "g": 4,
    "b": 43
  },
  "hsl": {
    "h": 284.615,
    "s": 82.979,
    "l": 9.216
  },
  "oklch": {
    "l": 0.19052,
    "c": 0.07959,
    "h": 316.1
  },
  "luminance": 0.00585
}

Semantic roles & 50–950 ramp

primary

#21042B

secondary

#326E1D

accent

#F92E62

background

#F5F4F6

surface

#E9E6EB

border

#C5C2C6

text

#040005

muted

#79777A

Preview Lab

Preview with #21042B

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

Preview Lab → · Contrast checker → · Palette generator →