#643B86#643B86

#643B86 is a dark, vivid violet. Relative luminance 0.076; OKLCH L 43.7% C 0.125 H 307.2°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#643B86
RGB	rgb(100, 59, 134)
HSL	hsl(273, 39%, 38%)
HSV	hsv(273, 56%, 53%)
CMYK	cmyk(25.4%, 56%, 0%, 47.5%)
CIE-LAB	lab(33.05, 33.15, -35.27)
CIE-LCH	lch(33.05, 48.41, 313.22°)
OKLab	oklab(43.67% 0.0754 -0.0991)
OKLCH	oklch(43.67% 0.125 307.2)
XYZ	xyz(11.1217, 7.5586, 23.4227)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B86 #5D863B

analogous

#3E3B86 #643B86 #863B82

triadic

#643B86 #86643B #3B8664

tetradic

#643B86 #863E3B #5D863B #3B8286

square

#643B86 #863E3B #5D863B #3B8286

split-complementary

#643B86 #82863B #3B863E

monochromatic

#251631 #44285C #643B86 #844EB0 #A178C4

Accessibility & contrast

On white

8.36

#643B86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#643B86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B86

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B86	#FFFFFF	#000000	##FFFFFF
##643B86	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234C89

Deuteranopia (green-blind)

#304E84

Tritanopia (blue-blind)

#5F495A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643b86;
/* rgb */ color: rgb(100, 59, 134);
/* oklch */ color: oklch(43.7% 0.125 307.2);

Tailwind

colors: {
  custom: {
    50: '#9272aa',
    500: '#643b86',
    950: '#000000',
  },
}

SCSS

$custom: #643b86;
$custom-light: #9272aa;
$custom-dark: #000000;

JSON

{
  "hex": "#643b86",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 134
  },
  "hsl": {
    "h": 272.8,
    "s": 38.86,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43674,
    "c": 0.12453,
    "h": 307.2
  },
  "luminance": 0.07558
}

Semantic roles & 50–950 ramp

primary

#643B86

secondary

#8CAD70

accent

#CF598E

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643B86

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

Preview Lab → · Contrast checker → · Palette generator →