#643F84#643F84

#643F84 is a dark, moderate violet. Relative luminance 0.079; OKLCH L 44.2% C 0.115 H 307.1°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#643F84
RGB	rgb(100, 63, 132)
HSL	hsl(272, 35%, 38%)
HSV	hsv(272, 52%, 52%)
CMYK	cmyk(24.2%, 52.3%, 0%, 48.2%)
CIE-LAB	lab(33.84, 30.29, -32.78)
CIE-LCH	lch(33.84, 44.63, 312.74°)
OKLab	oklab(44.22% 0.0694 -0.0919)
OKLCH	oklch(44.22% 0.115 307.1)
XYZ	xyz(11.1971, 7.9304, 22.7662)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F84 #5F843F

analogous

#413F84 #643F84 #843F81

triadic

#643F84 #84643F #3F8464

tetradic

#643F84 #84413F #5F843F #3F8184

square

#643F84 #84413F #5F843F #3F8184

split-complementary

#643F84 #81843F #3F8441

monochromatic

#251731 #452B5B #643F84 #8353AD #A17DC1

Accessibility & contrast

On white

8.12

#643F84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#643F84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F84

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F84	#FFFFFF	#000000	##FFFFFF
##643F84	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4E86

Deuteranopia (green-blind)

#365082

Tritanopia (blue-blind)

#5F4B5B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643f84;
/* rgb */ color: rgb(100, 63, 132);
/* oklch */ color: oklch(44.2% 0.115 307.1);

Tailwind

colors: {
  custom: {
    50: '#9275a8',
    500: '#643f84',
    950: '#000000',
  },
}

SCSS

$custom: #643f84;
$custom-light: #9275a8;
$custom-dark: #000000;

JSON

{
  "hex": "#643f84",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 132
  },
  "hsl": {
    "h": 272.174,
    "s": 35.385,
    "l": 38.235
  },
  "oklch": {
    "l": 0.44221,
    "c": 0.11513,
    "h": 307.1
  },
  "luminance": 0.0793
}

Semantic roles & 50–950 ramp

primary

#643F84

secondary

#8DAB74

accent

#CB5C90

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643F84

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

Preview Lab → · Contrast checker → · Palette generator →