#643E8D#643E8D

#643E8D is a dark, vivid violet. Relative luminance 0.081; OKLCH L 44.6% C 0.128 H 303.9°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#643E8D
RGB	rgb(100, 62, 141)
HSL	hsl(269, 39%, 40%)
HSV	hsv(269, 56%, 55%)
CMYK	cmyk(29.1%, 56%, 0%, 44.7%)
CIE-LAB	lab(34.14, 33.19, -37.83)
CIE-LCH	lch(34.14, 50.33, 311.25°)
OKLab	oklab(44.62% 0.0715 -0.1066)
OKLCH	oklch(44.62% 0.128 303.9)
XYZ	xyz(11.7848, 8.0777, 26.1324)
Luminance	0.0808 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E8D #678D3E

analogous

#3E408D #643E8D #8C3E8D

triadic

#643E8D #8D643E #3E8D64

tetradic

#643E8D #8D3E40 #678D3E #3E8D8C

square

#643E8D #8D3E40 #678D3E #3E8D8C

split-complementary

#643E8D #8D8C3E #408D3E

monochromatic

#281938 #462B62 #643E8D #8254B4 #A17FC7

Accessibility & contrast

On white

8.03

#643E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#643E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E8D

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E8D	#FFFFFF	#000000	##FFFFFF
##643E8D	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214F90

Deuteranopia (green-blind)

#2E508B

Tritanopia (blue-blind)

#5D4D5F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643e8d;
/* rgb */ color: rgb(100, 62, 141);
/* oklch */ color: oklch(44.6% 0.128 303.9);

Tailwind

colors: {
  custom: {
    50: '#9375af',
    500: '#643e8d',
    950: '#000000',
  },
}

SCSS

$custom: #643e8d;
$custom-light: #9375af;
$custom-dark: #000000;

JSON

{
  "hex": "#643e8d",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 141
  },
  "hsl": {
    "h": 268.861,
    "s": 38.916,
    "l": 39.804
  },
  "oklch": {
    "l": 0.44621,
    "c": 0.1284,
    "h": 303.9
  },
  "luminance": 0.08078
}

Semantic roles & 50–950 ramp

primary

#643E8D

secondary

#95B176

accent

#CF5996

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643E8D

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

Preview Lab → · Contrast checker → · Palette generator →