#21103B#21103B

#21103B is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.5% C 0.079 H 297.9°. Best body text is #FFFFFF at 17.47:1 contrast (WCAG AA passes).

Color values

HEX	#21103B
RGB	rgb(33, 16, 59)
HSL	hsl(264, 57%, 15%)
HSV	hsv(264, 73%, 23%)
CMYK	cmyk(44.1%, 72.9%, 0%, 76.9%)
CIE-LAB	lab(9.07, 20.12, -24.60)
CIE-LCH	lch(9.07, 31.78, 309.28°)
OKLab	oklab(22.48% 0.0371 -0.07)
OKLCH	oklch(22.48% 0.079 297.9)
XYZ	xyz(1.6017, 1.0097, 4.2473)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21103B #2A3B10

analogous

#10153B #21103B #37103B

triadic

#21103B #3B2110 #103B21

tetradic

#21103B #3B1015 #2A3B10 #103B37

square

#21103B #3B1015 #2A3B10 #103B37

split-complementary

#21103B #3B3710 #153B10

monochromatic

#0D0718 #0D0718 #21103B #3C1D6B #572A9B

Accessibility & contrast

On white

17.47

#21103B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#21103B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21103B

17.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21103B	#FFFFFF	#000000	##FFFFFF
##21103B	1.00	17.47	1.20	17.47
#FFFFFF	17.47	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3C

Deuteranopia (green-blind)

#00193A

Tritanopia (blue-blind)

#1B1A23

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #21103b;
/* rgb */ color: rgb(33, 16, 59);
/* oklch */ color: oklch(22.5% 0.079 297.9);

Tailwind

colors: {
  custom: {
    50: '#5f4f71',
    500: '#21103b',
    950: '#000000',
  },
}

SCSS

$custom: #21103b;
$custom-light: #5f4f71;
$custom-dark: #000000;

JSON

{
  "hex": "#21103b",
  "rgb": {
    "r": 33,
    "g": 16,
    "b": 59
  },
  "hsl": {
    "h": 263.721,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.22481,
    "c": 0.07925,
    "h": 297.9
  },
  "luminance": 0.0101
}

Semantic roles & 50–950 ramp

primary

#21103B

secondary

#5A7532

accent

#E147A4

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#050208

muted

#79787B

Preview Lab

Preview with #21103B

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

Preview Lab → · Contrast checker → · Palette generator →