#643C73#643C73

#643C73 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.7% C 0.099 H 316.3°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#643C73
RGB	rgb(100, 60, 115)
HSL	hsl(284, 31%, 34%)
HSV	hsv(284, 48%, 45%)
CMYK	cmyk(13%, 47.8%, 0%, 54.9%)
CIE-LAB	lab(32.21, 27.96, -24.73)
CIE-LCH	lch(32.21, 37.33, 318.51°)
OKLab	oklab(42.71% 0.0716 -0.0685)
OKLCH	oklch(42.71% 0.099 316.3)
XYZ	xyz(9.9654, 7.1791, 17.0771)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C73 #4B733C

analogous

#493C73 #643C73 #733C67

triadic

#643C73 #73643C #3C7364

tetradic

#643C73 #73493C #4B733C #3C6773

square

#643C73 #73493C #4B733C #3C6773

split-complementary

#643C73 #67733C #3C7349

monochromatic

#1E1223 #41274B #643C73 #87519B #A473B6

Accessibility & contrast

On white

8.62

#643C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#643C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C73

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C73	#FFFFFF	#000000	##FFFFFF
##643C73	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324975

Deuteranopia (green-blind)

#3D4D71

Tritanopia (blue-blind)

#634452

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643c73;
/* rgb */ color: rgb(100, 60, 115);
/* oklch */ color: oklch(42.7% 0.099 316.3);

Tailwind

colors: {
  custom: {
    50: '#91739b',
    500: '#643c73',
    950: '#000000',
  },
}

SCSS

$custom: #643c73;
$custom-light: #91739b;
$custom-dark: #000000;

JSON

{
  "hex": "#643c73",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 115
  },
  "hsl": {
    "h": 283.636,
    "s": 31.429,
    "l": 34.314
  },
  "oklch": {
    "l": 0.42709,
    "c": 0.0991,
    "h": 316.3
  },
  "luminance": 0.07179
}

Semantic roles & 50–950 ramp

primary

#643C73

secondary

#79A06B

accent

#C8607C

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643C73

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

Preview Lab → · Contrast checker → · Palette generator →