#643C7E#643C7E

#643C7E is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.3% C 0.113 H 310.5°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#643C7E
RGB	rgb(100, 60, 126)
HSL	hsl(276, 35%, 36%)
HSV	hsv(276, 52%, 49%)
CMYK	cmyk(20.6%, 52.4%, 0%, 50.6%)
CIE-LAB	lab(32.80, 30.58, -30.69)
CIE-LCH	lch(32.80, 43.33, 314.90°)
OKLab	oklab(43.34% 0.0732 -0.0858)
OKLCH	oklch(43.34% 0.113 310.5)
XYZ	xyz(10.6366, 7.4476, 20.6118)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C7E #567E3C

analogous

#433C7E #643C7E #7E3C77

triadic

#643C7E #7E643C #3C7E64

tetradic

#643C7E #7E433C #567E3C #3C777E

square

#643C7E #7E433C #567E3C #3C777E

split-complementary

#643C7E #777E3C #3C7E43

monochromatic

#22152B #432855 #643C7E #8550A7 #A276BE

Accessibility & contrast

On white

8.44

#643C7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#643C7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C7E

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C7E	#FFFFFF	#000000	##FFFFFF
##643C7E	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4B80

Deuteranopia (green-blind)

#374E7C

Tritanopia (blue-blind)

#614757

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643c7e;
/* rgb */ color: rgb(100, 60, 126);
/* oklch */ color: oklch(43.3% 0.113 310.5);

Tailwind

colors: {
  custom: {
    50: '#9273a4',
    500: '#643c7e',
    950: '#000000',
  },
}

SCSS

$custom: #643c7e;
$custom-light: #9273a4;
$custom-dark: #000000;

JSON

{
  "hex": "#643c7e",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 126
  },
  "hsl": {
    "h": 276.364,
    "s": 35.484,
    "l": 36.471
  },
  "oklch": {
    "l": 0.43344,
    "c": 0.11276,
    "h": 310.5
  },
  "luminance": 0.07447
}

Semantic roles & 50–950 ramp

primary

#643C7E

secondary

#85A86E

accent

#CC5C88

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643C7E

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

Preview Lab → · Contrast checker → · Palette generator →