#643B94#643B94

#643B94 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.6% C 0.142 H 302.2°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#643B94
RGB	rgb(100, 59, 148)
HSL	hsl(268, 43%, 41%)
HSV	hsv(268, 60%, 58%)
CMYK	cmyk(32.4%, 60.1%, 0%, 42%)
CIE-LAB	lab(33.93, 36.75, -42.46)
CIE-LCH	lch(33.93, 56.15, 310.88°)
OKLab	oklab(44.61% 0.0757 -0.1202)
OKLCH	oklch(44.61% 0.142 302.2)
XYZ	xyz(12.1636, 7.9754, 28.9098)
Luminance	0.0798 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B94 #6B943B

analogous

#3B3F94 #643B94 #903B94

triadic

#643B94 #94643B #3B9464

tetradic

#643B94 #943B3F #6B943B #3B9490

square

#643B94 #943B3F #6B943B #3B9490

split-complementary

#643B94 #94903B #3F943B

monochromatic

#29183C #462A68 #643B94 #8252BA #A27ECC

Accessibility & contrast

On white

8.09

#643B94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#643B94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B94

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B94	#FFFFFF	#000000	##FFFFFF
##643B94	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4F97

Deuteranopia (green-blind)

#234F92

Tritanopia (blue-blind)

#5B4D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643b94;
/* rgb */ color: rgb(100, 59, 148);
/* oklch */ color: oklch(44.6% 0.142 302.2);

Tailwind

colors: {
  custom: {
    50: '#9373b4',
    500: '#643b94',
    950: '#000000',
  },
}

SCSS

$custom: #643b94;
$custom-light: #9373b4;
$custom-dark: #000000;

JSON

{
  "hex": "#643b94",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 148
  },
  "hsl": {
    "h": 267.64,
    "s": 42.995,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44609,
    "c": 0.14204,
    "h": 302.2
  },
  "luminance": 0.07975
}

Semantic roles & 50–950 ramp

primary

#643B94

secondary

#98B576

accent

#D35599

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643B94

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

Preview Lab → · Contrast checker → · Palette generator →