#643A71#643A71

#643A71 is a dark, moderate purple. Relative luminance 0.069; OKLCH L 42.3% C 0.100 H 317.8°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#643A71
RGB	rgb(100, 58, 113)
HSL	hsl(286, 32%, 34%)
HSV	hsv(286, 49%, 44%)
CMYK	cmyk(11.5%, 48.7%, 0%, 55.7%)
CIE-LAB	lab(31.64, 28.69, -24.36)
CIE-LCH	lch(31.64, 37.64, 319.67°)
OKLab	oklab(42.25% 0.0744 -0.0674)
OKLCH	oklch(42.25% 0.1 317.8)
XYZ	xyz(9.7488, 6.9280, 16.4433)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A71 #47713A

analogous

#483A71 #643A71 #713A62

triadic

#643A71 #71643A #3A7164

tetradic

#643A71 #71483A #47713A #3A6271

square

#643A71 #71483A #47713A #3A6271

split-complementary

#643A71 #62713A #3A7148

monochromatic

#1C1020 #402549 #643A71 #884F99 #A570B6

Accessibility & contrast

On white

8.80

#643A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#643A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A71

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A71	#FFFFFF	#000000	##FFFFFF
##643A71	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304873

Deuteranopia (green-blind)

#3C4C6F

Tritanopia (blue-blind)

#644250

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #643a71;
/* rgb */ color: rgb(100, 58, 113);
/* oklch */ color: oklch(42.3% 0.100 317.8);

Tailwind

colors: {
  custom: {
    50: '#91719a',
    500: '#643a71',
    950: '#000000',
  },
}

SCSS

$custom: #643a71;
$custom-light: #91719a;
$custom-dark: #000000;

JSON

{
  "hex": "#643a71",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 113
  },
  "hsl": {
    "h": 285.818,
    "s": 32.164,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42252,
    "c": 0.10042,
    "h": 317.8
  },
  "luminance": 0.06928
}

Semantic roles & 50–950 ramp

primary

#643A71

secondary

#759F68

accent

#C85F78

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643A71

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

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