#643C7C#643C7C

#643C7C is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.2% C 0.110 H 311.4°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#643C7C
RGB	rgb(100, 60, 124)
HSL	hsl(278, 35%, 36%)
HSV	hsv(278, 52%, 49%)
CMYK	cmyk(19.4%, 51.6%, 0%, 51.4%)
CIE-LAB	lab(32.69, 30.10, -29.62)
CIE-LCH	lch(32.69, 42.23, 315.46°)
OKLab	oklab(43.23% 0.073 -0.0826)
OKLCH	oklch(43.23% 0.11 311.4)
XYZ	xyz(10.5088, 7.3965, 19.9389)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C7C #547C3C

analogous

#443C7C #643C7C #7C3C74

triadic

#643C7C #7C643C #3C7C64

tetradic

#643C7C #7C443C #547C3C #3C747C

square

#643C7C #7C443C #547C3C #3C747C

split-complementary

#643C7C #747C3C #3C7C44

monochromatic

#21142A #432853 #643C7C #8550A5 #A276BD

Accessibility & contrast

On white

8.47

#643C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#643C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C7C

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C7C	#FFFFFF	#000000	##FFFFFF
##643C7C	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4B7E

Deuteranopia (green-blind)

#384E7A

Tritanopia (blue-blind)

#614656

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643c7c;
/* rgb */ color: rgb(100, 60, 124);
/* oklch */ color: oklch(43.2% 0.110 311.4);

Tailwind

colors: {
  custom: {
    50: '#9273a2',
    500: '#643c7c',
    950: '#000000',
  },
}

SCSS

$custom: #643c7c;
$custom-light: #9273a2;
$custom-dark: #000000;

JSON

{
  "hex": "#643c7c",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 124
  },
  "hsl": {
    "h": 277.5,
    "s": 34.783,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43225,
    "c": 0.11026,
    "h": 311.4
  },
  "luminance": 0.07396
}

Semantic roles & 50–950 ramp

primary

#643C7C

secondary

#83A66D

accent

#CB5D86

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643C7C

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

Preview Lab → · Contrast checker → · Palette generator →