#643C79#643C79

#643C79 is a dark, moderate violet. Relative luminance 0.073; OKLCH L 43.0% C 0.107 H 312.9°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#643C79
RGB	rgb(100, 60, 121)
HSL	hsl(279, 34%, 35%)
HSV	hsv(279, 50%, 47%)
CMYK	cmyk(17.4%, 50.4%, 0%, 52.5%)
CIE-LAB	lab(32.53, 29.37, -28.00)
CIE-LCH	lch(32.53, 40.58, 316.37°)
OKLab	oklab(43.05% 0.0726 -0.078)
OKLCH	oklch(43.05% 0.107 312.9)
XYZ	xyz(10.3220, 7.3218, 18.9549)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C79 #51793C

analogous

#453C79 #643C79 #793C6F

triadic

#643C79 #79643C #3C7964

tetradic

#643C79 #79453C #51793C #3C6F79

square

#643C79 #79453C #51793C #3C6F79

split-complementary

#643C79 #6F793C #3C7945

monochromatic

#201327 #422850 #643C79 #8650A2 #A375BB

Accessibility & contrast

On white

8.52

#643C79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#643C79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C79

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C79	#FFFFFF	#000000	##FFFFFF
##643C79	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4A7B

Deuteranopia (green-blind)

#3A4D77

Tritanopia (blue-blind)

#624555

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643c79;
/* rgb */ color: rgb(100, 60, 121);
/* oklch */ color: oklch(43.0% 0.107 312.9);

Tailwind

colors: {
  custom: {
    50: '#9273a0',
    500: '#643c79',
    950: '#000000',
  },
}

SCSS

$custom: #643c79;
$custom-light: #9273a0;
$custom-dark: #000000;

JSON

{
  "hex": "#643c79",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 121
  },
  "hsl": {
    "h": 279.344,
    "s": 33.702,
    "l": 35.49
  },
  "oklch": {
    "l": 0.43049,
    "c": 0.10651,
    "h": 312.9
  },
  "luminance": 0.07322
}

Semantic roles & 50–950 ramp

primary

#643C79

secondary

#80A46C

accent

#CA5E83

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643C79

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

Preview Lab → · Contrast checker → · Palette generator →