#21023B#21023B

#21023B is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.3% C 0.101 H 303.1°. Best body text is #FFFFFF at 18.48:1 contrast (WCAG AA passes).

Color values

HEX	#21023B
RGB	rgb(33, 2, 59)
HSL	hsl(273, 93%, 12%)
HSV	hsv(273, 97%, 23%)
CMYK	cmyk(44.1%, 96.6%, 0%, 76.9%)
CIE-LAB	lab(6.17, 28.13, -29.32)
CIE-LCH	lch(6.17, 40.63, 313.81°)
OKLab	oklab(20.32% 0.0552 -0.0846)
OKLCH	oklch(20.32% 0.101 303.1)
XYZ	xyz(1.4381, 0.6825, 4.1928)
Luminance	0.0068 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21023B #1C3B02

analogous

#05023B #21023B #3B0239

triadic

#21023B #3B2102 #023B21

tetradic

#21023B #3B0502 #1C3B02 #02393B

square

#21023B #3B0502 #1C3B02 #02393B

split-complementary

#21023B #393B02 #023B05

monochromatic

#11011E #11011E #21023B #420476 #6306B1

Accessibility & contrast

On white

18.48

#21023B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#21023B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21023B

18.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21023B	#FFFFFF	#000000	##FFFFFF
##21023B	1.00	18.48	1.14	18.48
#FFFFFF	18.48	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133C

Deuteranopia (green-blind)

#00133A

Tritanopia (blue-blind)

#1B121F

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #21023b;
/* rgb */ color: rgb(33, 2, 59);
/* oklch */ color: oklch(20.3% 0.101 303.1);

Tailwind

colors: {
  custom: {
    50: '#604771',
    500: '#21023b',
    950: '#000000',
  },
}

SCSS

$custom: #21023b;
$custom-light: #604771;
$custom-dark: #000000;

JSON

{
  "hex": "#21023b",
  "rgb": {
    "r": 33,
    "g": 2,
    "b": 59
  },
  "hsl": {
    "h": 272.632,
    "s": 93.443,
    "l": 11.961
  },
  "oklch": {
    "l": 0.20317,
    "c": 0.10103,
    "h": 303.1
  },
  "luminance": 0.00683
}

Semantic roles & 50–950 ramp

primary

#21023B

secondary

#487E1A

accent

#FF298B

background

#F5F4F6

surface

#EAE6EC

border

#C6C2C7

text

#050008

muted

#79777B

Preview Lab

Preview with #21023B

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

Preview Lab → · Contrast checker → · Palette generator →