#28103B#28103B

#28103B is a very dark, moderate violet. Relative luminance 0.011; OKLCH L 23.4% C 0.081 H 306.9°. Best body text is #FFFFFF at 17.11:1 contrast (WCAG AA passes).

Color values

HEX	#28103B
RGB	rgb(40, 16, 59)
HSL	hsl(273, 57%, 15%)
HSV	hsv(273, 73%, 23%)
CMYK	cmyk(32.2%, 72.9%, 0%, 76.9%)
CIE-LAB	lab(10.09, 22.04, -22.91)
CIE-LCH	lch(10.09, 31.79, 313.89°)
OKLab	oklab(23.44% 0.0486 -0.0648)
OKLCH	oklch(23.44% 0.081 306.9)
XYZ	xyz(1.8496, 1.1375, 4.2589)
Luminance	0.0114 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28103B #233B10

analogous

#12103B #28103B #3B1039

triadic

#28103B #3B2810 #103B28

tetradic

#28103B #3B1210 #233B10 #10393B

square

#28103B #3B1210 #233B10 #10393B

split-complementary

#28103B #393B10 #103B12

monochromatic

#100718 #100718 #28103B #491D6B #692A9B

Accessibility & contrast

On white

17.11

#28103B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#28103B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28103B

17.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28103B	#FFFFFF	#000000	##FFFFFF
##28103B	1.00	17.11	1.23	17.11
#FFFFFF	17.11	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B3C

Deuteranopia (green-blind)

#081C3A

Tritanopia (blue-blind)

#251923

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #28103b;
/* rgb */ color: rgb(40, 16, 59);
/* oklch */ color: oklch(23.4% 0.081 306.9);

Tailwind

colors: {
  custom: {
    50: '#645071',
    500: '#28103b',
    950: '#000000',
  },
}

SCSS

$custom: #28103b;
$custom-light: #645071;
$custom-dark: #000000;

JSON

{
  "hex": "#28103b",
  "rgb": {
    "r": 40,
    "g": 16,
    "b": 59
  },
  "hsl": {
    "h": 273.488,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.23443,
    "c": 0.081,
    "h": 306.9
  },
  "luminance": 0.01137
}

Semantic roles & 50–950 ramp

primary

#28103B

secondary

#507532

accent

#E1478B

background

#F6F4F6

surface

#EBE7EC

border

#C6C3C7

text

#050207

muted

#7A787A

Preview Lab

Preview with #28103B

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

Preview Lab → · Contrast checker → · Palette generator →