#643F7E#643F7E

#643F7E is a dark, moderate violet. Relative luminance 0.078; OKLCH L 43.9% C 0.107 H 309.7°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#643F7E
RGB	rgb(100, 63, 126)
HSL	hsl(275, 33%, 37%)
HSV	hsv(275, 50%, 49%)
CMYK	cmyk(20.6%, 50%, 0%, 50.6%)
CIE-LAB	lab(33.50, 28.80, -29.59)
CIE-LCH	lch(33.50, 41.29, 314.22°)
OKLab	oklab(43.86% 0.0687 -0.0826)
OKLCH	oklch(43.86% 0.107 309.7)
XYZ	xyz(10.7982, 7.7709, 20.6657)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F7E #597E3F

analogous

#453F7E #643F7E #7E3F79

triadic

#643F7E #7E643F #3F7E64

tetradic

#643F7E #7E453F #597E3F #3F797E

square

#643F7E #7E453F #597E3F #3F797E

split-complementary

#643F7E #797E3F #3F7E45

monochromatic

#23162C #442B55 #643F7E #8453A7 #A17BBD

Accessibility & contrast

On white

8.22

#643F7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#643F7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F7E

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F7E	#FFFFFF	#000000	##FFFFFF
##643F7E	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4D80

Deuteranopia (green-blind)

#3A4F7C

Tritanopia (blue-blind)

#614958

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643f7e;
/* rgb */ color: rgb(100, 63, 126);
/* oklch */ color: oklch(43.9% 0.107 309.7);

Tailwind

colors: {
  custom: {
    50: '#9275a3',
    500: '#643f7e',
    950: '#000000',
  },
}

SCSS

$custom: #643f7e;
$custom-light: #9275a3;
$custom-dark: #000000;

JSON

{
  "hex": "#643f7e",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 126
  },
  "hsl": {
    "h": 275.238,
    "s": 33.333,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43862,
    "c": 0.10741,
    "h": 309.7
  },
  "luminance": 0.07771
}

Semantic roles & 50–950 ramp

primary

#643F7E

secondary

#88A772

accent

#C95E8B

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643F7E

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

Preview Lab → · Contrast checker → · Palette generator →