#643C87#643C87

#643C87 is a dark, vivid violet. Relative luminance 0.077; OKLCH L 43.9% C 0.124 H 306.6°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#643C87
RGB	rgb(100, 60, 135)
HSL	hsl(272, 38%, 38%)
HSV	hsv(272, 56%, 53%)
CMYK	cmyk(25.9%, 55.6%, 0%, 47.1%)
CIE-LAB	lab(33.33, 32.82, -35.44)
CIE-LCH	lch(33.33, 48.30, 312.80°)
OKLab	oklab(43.9% 0.074 -0.0996)
OKLCH	oklch(43.9% 0.124 306.6)
XYZ	xyz(11.2437, 7.6904, 23.8090)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C87 #5F873C

analogous

#3E3C87 #643C87 #873C84

triadic

#643C87 #87643C #3C8764

tetradic

#643C87 #873E3C #5F873C #3C8487

square

#643C87 #873E3C #5F873C #3C8487

split-complementary

#643C87 #84873C #3C873E

monochromatic

#251632 #45295D #643C87 #834FB1 #A17AC4

Accessibility & contrast

On white

8.27

#643C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#643C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C87

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C87	#FFFFFF	#000000	##FFFFFF
##643C87	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244D8A

Deuteranopia (green-blind)

#314F85

Tritanopia (blue-blind)

#5F4A5B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643c87;
/* rgb */ color: rgb(100, 60, 135);
/* oklch */ color: oklch(43.9% 0.124 306.6);

Tailwind

colors: {
  custom: {
    50: '#9273aa',
    500: '#643c87',
    950: '#000000',
  },
}

SCSS

$custom: #643c87;
$custom-light: #9273aa;
$custom-dark: #000000;

JSON

{
  "hex": "#643c87",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 135
  },
  "hsl": {
    "h": 272,
    "s": 38.462,
    "l": 38.235
  },
  "oklch": {
    "l": 0.43903,
    "c": 0.1241,
    "h": 306.6
  },
  "luminance": 0.0769
}

Semantic roles & 50–950 ramp

primary

#643C87

secondary

#8DAD71

accent

#CE5990

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643C87

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

Preview Lab → · Contrast checker → · Palette generator →