#643C7D#643C7D

#643C7D is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.3% C 0.112 H 311.0°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#643C7D
RGB	rgb(100, 60, 125)
HSL	hsl(277, 35%, 36%)
HSV	hsv(277, 52%, 49%)
CMYK	cmyk(20%, 52%, 0%, 51%)
CIE-LAB	lab(32.75, 30.34, -30.16)
CIE-LCH	lch(32.75, 42.78, 315.17°)
OKLab	oklab(43.28% 0.0731 -0.0842)
OKLCH	oklch(43.28% 0.112 311)
XYZ	xyz(10.5724, 7.4219, 20.2737)
Luminance	0.0742 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C7D #557D3C

analogous

#443C7D #643C7D #7D3C76

triadic

#643C7D #7D643C #3C7D64

tetradic

#643C7D #7D443C #557D3C #3C767D

square

#643C7D #7D443C #557D3C #3C767D

split-complementary

#643C7D #767D3C #3C7D44

monochromatic

#22142A #432854 #643C7D #8550A6 #A276BD

Accessibility & contrast

On white

8.45

#643C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#643C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C7D

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C7D	#FFFFFF	#000000	##FFFFFF
##643C7D	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4B7F

Deuteranopia (green-blind)

#384E7B

Tritanopia (blue-blind)

#614756

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643c7d;
/* rgb */ color: rgb(100, 60, 125);
/* oklch */ color: oklch(43.3% 0.112 311.0);

Tailwind

colors: {
  custom: {
    50: '#9273a3',
    500: '#643c7d',
    950: '#000000',
  },
}

SCSS

$custom: #643c7d;
$custom-light: #9273a3;
$custom-dark: #000000;

JSON

{
  "hex": "#643c7d",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 276.923,
    "s": 35.135,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43284,
    "c": 0.11151,
    "h": 311
  },
  "luminance": 0.07422
}

Semantic roles & 50–950 ramp

primary

#643C7D

secondary

#84A76E

accent

#CB5D87

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643C7D

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

Preview Lab → · Contrast checker → · Palette generator →