#643E7E#643E7E

#643E7E is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.7% C 0.109 H 310.0°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#643E7E
RGB	rgb(100, 62, 126)
HSL	hsl(276, 34%, 37%)
HSV	hsv(276, 51%, 49%)
CMYK	cmyk(20.6%, 50.8%, 0%, 50.6%)
CIE-LAB	lab(33.27, 29.39, -29.96)
CIE-LCH	lch(33.27, 41.97, 314.45°)
OKLab	oklab(43.69% 0.0702 -0.0836)
OKLCH	oklch(43.69% 0.109 310)
XYZ	xyz(10.7433, 7.6611, 20.6474)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E7E #587E3E

analogous

#443E7E #643E7E #7E3E78

triadic

#643E7E #7E643E #3E7E64

tetradic

#643E7E #7E443E #587E3E #3E787E

square

#643E7E #7E443E #587E3E #3E787E

split-complementary

#643E7E #787E3E #3E7E44

monochromatic

#23162C #432A55 #643E7E #8552A7 #A279BD

Accessibility & contrast

On white

8.29

#643E7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#643E7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E7E

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E7E	#FFFFFF	#000000	##FFFFFF
##643E7E	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4C80

Deuteranopia (green-blind)

#394F7C

Tritanopia (blue-blind)

#614858

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643e7e;
/* rgb */ color: rgb(100, 62, 126);
/* oklch */ color: oklch(43.7% 0.109 310.0);

Tailwind

colors: {
  custom: {
    50: '#9274a4',
    500: '#643e7e',
    950: '#000000',
  },
}

SCSS

$custom: #643e7e;
$custom-light: #9274a4;
$custom-dark: #000000;

JSON

{
  "hex": "#643e7e",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 126
  },
  "hsl": {
    "h": 275.625,
    "s": 34.043,
    "l": 36.863
  },
  "oklch": {
    "l": 0.43687,
    "c": 0.1092,
    "h": 310
  },
  "luminance": 0.07661
}

Semantic roles & 50–950 ramp

primary

#643E7E

secondary

#87A770

accent

#CA5E8A

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643E7E

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

Preview Lab → · Contrast checker → · Palette generator →