#643B95#643B95

#643B95 is a dark, vivid violet. Relative luminance 0.080; OKLCH L 44.7% C 0.143 H 301.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#643B95
RGB	rgb(100, 59, 149)
HSL	hsl(267, 43%, 41%)
HSV	hsv(267, 60%, 58%)
CMYK	cmyk(32.9%, 60.4%, 0%, 41.6%)
CIE-LAB	lab(34.00, 37.01, -42.96)
CIE-LCH	lch(34.00, 56.70, 310.74°)
OKLab	oklab(44.68% 0.0757 -0.1216)
OKLCH	oklch(44.68% 0.143 301.9)
XYZ	xyz(12.2430, 8.0071, 29.3285)
Luminance	0.0801 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B95 #6C953B

analogous

#3B3F95 #643B95 #913B95

triadic

#643B95 #95643B #3B9564

tetradic

#643B95 #953B3F #6C953B #3B9591

square

#643B95 #953B3F #6C953B #3B9591

split-complementary

#643B95 #95913B #3F953B

monochromatic

#29183D #472A69 #643B95 #8253BB #A27ECC

Accessibility & contrast

On white

8.07

#643B95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#643B95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B95

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B95	#FFFFFF	#000000	##FFFFFF
##643B95	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D4F98

Deuteranopia (green-blind)

#225093

Tritanopia (blue-blind)

#5A4D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643b95;
/* rgb */ color: rgb(100, 59, 149);
/* oklch */ color: oklch(44.7% 0.143 301.9);

Tailwind

colors: {
  custom: {
    50: '#9373b5',
    500: '#643b95',
    950: '#000000',
  },
}

SCSS

$custom: #643b95;
$custom-light: #9373b5;
$custom-dark: #000000;

JSON

{
  "hex": "#643b95",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 149
  },
  "hsl": {
    "h": 267.333,
    "s": 43.269,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44679,
    "c": 0.14328,
    "h": 301.9
  },
  "luminance": 0.08007
}

Semantic roles & 50–950 ramp

primary

#643B95

secondary

#99B676

accent

#D3559A

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643B95

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

Preview Lab → · Contrast checker → · Palette generator →