#643A79#643A79

#643A79 is a dark, moderate purple. Relative luminance 0.071; OKLCH L 42.7% C 0.110 H 313.4°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#643A79
RGB	rgb(100, 58, 121)
HSL	hsl(280, 35%, 35%)
HSV	hsv(280, 52%, 47%)
CMYK	cmyk(17.4%, 52.1%, 0%, 52.5%)
CIE-LAB	lab(32.07, 30.56, -28.73)
CIE-LCH	lch(32.07, 41.94, 316.77°)
OKLab	oklab(42.71% 0.0756 -0.08)
OKLCH	oklch(42.71% 0.11 313.4)
XYZ	xyz(10.2192, 7.1162, 18.9207)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A79 #4F793A

analogous

#443A79 #643A79 #793A6F

triadic

#643A79 #79643A #3A7964

tetradic

#643A79 #79443A #4F793A #3A6F79

square

#643A79 #79443A #4F793A #3A6F79

split-complementary

#643A79 #6F793A #3A7944

monochromatic

#201226 #422650 #643A79 #864EA2 #A372BB

Accessibility & contrast

On white

8.67

#643A79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#643A79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A79

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A79	#FFFFFF	#000000	##FFFFFF
##643A79	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C497B

Deuteranopia (green-blind)

#384C77

Tritanopia (blue-blind)

#624454

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643a79;
/* rgb */ color: rgb(100, 58, 121);
/* oklch */ color: oklch(42.7% 0.110 313.4);

Tailwind

colors: {
  custom: {
    50: '#9272a0',
    500: '#643a79',
    950: '#000000',
  },
}

SCSS

$custom: #643a79;
$custom-light: #9272a0;
$custom-dark: #000000;

JSON

{
  "hex": "#643a79",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 121
  },
  "hsl": {
    "h": 280,
    "s": 35.196,
    "l": 35.098
  },
  "oklch": {
    "l": 0.42709,
    "c": 0.11013,
    "h": 313.4
  },
  "luminance": 0.07116
}

Semantic roles & 50–950 ramp

primary

#643A79

secondary

#7EA56A

accent

#CB5D81

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643A79

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

Preview Lab → · Contrast checker → · Palette generator →