#643F75#643F75

#643F75 is a dark, moderate purple. Relative luminance 0.075; OKLCH L 43.4% C 0.096 H 314.5°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#643F75
RGB	rgb(100, 63, 117)
HSL	hsl(281, 30%, 35%)
HSV	hsv(281, 46%, 46%)
CMYK	cmyk(14.5%, 46.2%, 0%, 54.1%)
CIE-LAB	lab(33.03, 26.63, -24.72)
CIE-LCH	lch(33.03, 36.33, 317.13°)
OKLab	oklab(43.35% 0.0672 -0.0685)
OKLCH	oklch(43.35% 0.096 314.5)
XYZ	xyz(10.2434, 7.5489, 17.7437)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F75 #50753F

analogous

#493F75 #643F75 #753F6B

triadic

#643F75 #75643F #3F7564

tetradic

#643F75 #75493F #50753F #3F6B75

square

#643F75 #75493F #50753F #3F6B75

split-complementary

#643F75 #6B753F #3F7549

monochromatic

#201425 #422A4D #643F75 #86549D #A378B6

Accessibility & contrast

On white

8.37

#643F75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#643F75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F75

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F75	#FFFFFF	#000000	##FFFFFF
##643F75	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354C77

Deuteranopia (green-blind)

#3F4F73

Tritanopia (blue-blind)

#634754

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643f75;
/* rgb */ color: rgb(100, 63, 117);
/* oklch */ color: oklch(43.4% 0.096 314.5);

Tailwind

colors: {
  custom: {
    50: '#91759d',
    500: '#643f75',
    950: '#000000',
  },
}

SCSS

$custom: #643f75;
$custom-light: #91759d;
$custom-dark: #000000;

JSON

{
  "hex": "#643f75",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 117
  },
  "hsl": {
    "h": 281.111,
    "s": 30,
    "l": 35.294
  },
  "oklch": {
    "l": 0.43351,
    "c": 0.09594,
    "h": 314.5
  },
  "luminance": 0.07549
}

Semantic roles & 50–950 ramp

primary

#643F75

secondary

#7FA16F

accent

#C66281

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643F75

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

Preview Lab → · Contrast checker → · Palette generator →