#643E89#643E89

#643E89 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.4% C 0.123 H 305.3°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#643E89
RGB	rgb(100, 62, 137)
HSL	hsl(270, 38%, 39%)
HSV	hsv(270, 55%, 54%)
CMYK	cmyk(27%, 54.7%, 0%, 46.3%)
CIE-LAB	lab(33.90, 32.16, -35.76)
CIE-LCH	lch(33.90, 48.09, 311.96°)
OKLab	oklab(44.36% 0.0713 -0.1006)
OKLCH	oklch(44.36% 0.123 305.3)
XYZ	xyz(11.4926, 7.9608, 24.5932)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E89 #63893E

analogous

#3F3E89 #643E89 #893E89

triadic

#643E89 #89643E #3E8964

tetradic

#643E89 #893F3E #63893E #3E8989

square

#643E89 #893F3E #63893E #3E8989

split-complementary

#643E89 #89893E #3E893F

monochromatic

#261835 #452B5F #643E89 #8353B1 #A17DC4

Accessibility & contrast

On white

8.10

#643E89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#643E89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E89

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E89	#FFFFFF	#000000	##FFFFFF
##643E89	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)

#254F8C

Deuteranopia (green-blind)

#315087

Tritanopia (blue-blind)

#5E4C5D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643e89;
/* rgb */ color: rgb(100, 62, 137);
/* oklch */ color: oklch(44.4% 0.123 305.3);

Tailwind

colors: {
  custom: {
    50: '#9275ac',
    500: '#643e89',
    950: '#000000',
  },
}

SCSS

$custom: #643e89;
$custom-light: #9275ac;
$custom-dark: #000000;

JSON

{
  "hex": "#643e89",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 137
  },
  "hsl": {
    "h": 270.4,
    "s": 37.688,
    "l": 39.02
  },
  "oklch": {
    "l": 0.44363,
    "c": 0.12328,
    "h": 305.3
  },
  "luminance": 0.07961
}

Semantic roles & 50–950 ramp

primary

#643E89

secondary

#91AE74

accent

#CE5A93

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643E89

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

Preview Lab → · Contrast checker → · Palette generator →