#643F85#643F85

#643F85 is a dark, moderate violet. Relative luminance 0.080; OKLCH L 44.3% C 0.116 H 306.7°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#643F85
RGB	rgb(100, 63, 133)
HSL	hsl(272, 36%, 38%)
HSV	hsv(272, 53%, 52%)
CMYK	cmyk(24.8%, 52.6%, 0%, 47.8%)
CIE-LAB	lab(33.90, 30.54, -33.31)
CIE-LCH	lch(33.90, 45.19, 312.52°)
OKLab	oklab(44.28% 0.0695 -0.0934)
OKLCH	oklch(44.28% 0.116 306.7)
XYZ	xyz(11.2658, 7.9579, 23.1283)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F85 #60853F

analogous

#413F85 #643F85 #853F83

triadic

#643F85 #85643F #3F8564

tetradic

#643F85 #85413F #60853F #3F8385

square

#643F85 #85413F #60853F #3F8385

split-complementary

#643F85 #83853F #3F8541

monochromatic

#261832 #452B5B #643F85 #8353AE #A17DC1

Accessibility & contrast

On white

8.10

#643F85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#643F85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F85

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F85	#FFFFFF	#000000	##FFFFFF
##643F85	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4E87

Deuteranopia (green-blind)

#355083

Tritanopia (blue-blind)

#5F4B5C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643f85;
/* rgb */ color: rgb(100, 63, 133);
/* oklch */ color: oklch(44.3% 0.116 306.7);

Tailwind

colors: {
  custom: {
    50: '#9275a9',
    500: '#643f85',
    950: '#000000',
  },
}

SCSS

$custom: #643f85;
$custom-light: #9275a9;
$custom-dark: #000000;

JSON

{
  "hex": "#643f85",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 133
  },
  "hsl": {
    "h": 271.714,
    "s": 35.714,
    "l": 38.431
  },
  "oklch": {
    "l": 0.44283,
    "c": 0.11643,
    "h": 306.7
  },
  "luminance": 0.07958
}

Semantic roles & 50–950 ramp

primary

#643F85

secondary

#8EAC74

accent

#CC5C91

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643F85

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

Preview Lab → · Contrast checker → · Palette generator →