#643D94#643D94

#643D94 is a dark, vivid violet. Relative luminance 0.082; OKLCH L 44.9% C 0.139 H 301.7°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#643D94
RGB	rgb(100, 61, 148)
HSL	hsl(267, 42%, 41%)
HSV	hsv(267, 59%, 58%)
CMYK	cmyk(32.4%, 58.8%, 0%, 42%)
CIE-LAB	lab(34.37, 35.60, -41.76)
CIE-LCH	lch(34.37, 54.87, 310.44°)
OKLab	oklab(44.93% 0.0731 -0.1181)
OKLCH	oklch(44.93% 0.139 301.7)
XYZ	xyz(12.2683, 8.1849, 28.9447)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D94 #6D943D

analogous

#3D4194 #643D94 #8F3D94

triadic

#643D94 #94643D #3D9464

tetradic

#643D94 #943D41 #6D943D #3D948F

square

#643D94 #943D41 #6D943D #3D948F

split-complementary

#643D94 #948F3D #41943D

monochromatic

#29193D #472B69 #643D94 #8255B9 #A281CB

Accessibility & contrast

On white

7.96

#643D94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#643D94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D94

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D94	#FFFFFF	#000000	##FFFFFF
##643D94	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#165097

Deuteranopia (green-blind)

#265092

Tritanopia (blue-blind)

#5B4E62

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643d94;
/* rgb */ color: rgb(100, 61, 148);
/* oklch */ color: oklch(44.9% 0.139 301.7);

Tailwind

colors: {
  custom: {
    50: '#9374b4',
    500: '#643d94',
    950: '#000000',
  },
}

SCSS

$custom: #643d94;
$custom-light: #9374b4;
$custom-dark: #000000;

JSON

{
  "hex": "#643d94",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 148
  },
  "hsl": {
    "h": 266.897,
    "s": 41.627,
    "l": 40.98
  },
  "oklch": {
    "l": 0.44926,
    "c": 0.13892,
    "h": 301.7
  },
  "luminance": 0.08185
}

Semantic roles & 50–950 ramp

primary

#643D94

secondary

#9AB578

accent

#D1569A

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643D94

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

Preview Lab → · Contrast checker → · Palette generator →