#643F97#643F97

#643F97 is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.5% C 0.140 H 300.3°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#643F97
RGB	rgb(100, 63, 151)
HSL	hsl(265, 41%, 42%)
HSV	hsv(265, 58%, 59%)
CMYK	cmyk(33.8%, 58.3%, 0%, 40.8%)
CIE-LAB	lab(35.00, 35.23, -42.57)
CIE-LCH	lch(35.00, 55.26, 309.62°)
OKLab	oklab(45.46% 0.0705 -0.1205)
OKLCH	oklch(45.46% 0.14 300.3)
XYZ	xyz(12.6176, 8.4986, 30.2478)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F97 #72973F

analogous

#3F4697 #643F97 #903F97

triadic

#643F97 #97643F #3F9764

tetradic

#643F97 #973F46 #72973F #3F9790

square

#643F97 #973F46 #72973F #3F9790

split-complementary

#643F97 #97903F #46973F

monochromatic

#2B1B41 #472D6C #643F97 #8259BA #A385CC

Accessibility & contrast

On white

7.78

#643F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F97

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F97	#FFFFFF	#000000	##FFFFFF
##643F97	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17529A

Deuteranopia (green-blind)

#265295

Tritanopia (blue-blind)

#595165

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643f97;
/* rgb */ color: rgb(100, 63, 151);
/* oklch */ color: oklch(45.5% 0.140 300.3);

Tailwind

colors: {
  custom: {
    50: '#9375b6',
    500: '#643f97',
    950: '#000000',
  },
}

SCSS

$custom: #643f97;
$custom-light: #9375b6;
$custom-dark: #000000;

JSON

{
  "hex": "#643f97",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 151
  },
  "hsl": {
    "h": 265.227,
    "s": 41.121,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45455,
    "c": 0.1396,
    "h": 300.3
  },
  "luminance": 0.08499
}

Semantic roles & 50–950 ramp

primary

#643F97

secondary

#9EB67C

accent

#D1579E

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643F97

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

Preview Lab → · Contrast checker → · Palette generator →