#643C94#643C94

#643C94 is a dark, vivid violet. Relative luminance 0.081; OKLCH L 44.8% C 0.140 H 302.0°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#643C94
RGB	rgb(100, 60, 148)
HSL	hsl(267, 42%, 41%)
HSV	hsv(267, 59%, 58%)
CMYK	cmyk(32.4%, 59.5%, 0%, 42%)
CIE-LAB	lab(34.15, 36.17, -42.11)
CIE-LCH	lch(34.15, 55.51, 310.66°)
OKLab	oklab(44.77% 0.0744 -0.1192)
OKLCH	oklch(44.77% 0.14 302)
XYZ	xyz(12.2154, 8.0791, 28.9271)
Luminance	0.0808 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C94 #6C943C

analogous

#3C4094 #643C94 #903C94

triadic

#643C94 #94643C #3C9464

tetradic

#643C94 #943C40 #6C943C #3C9490

square

#643C94 #943C40 #6C943C #3C9490

split-complementary

#643C94 #94903C #40943C

monochromatic

#29193D #472A68 #643C94 #8254BA #A27FCB

Accessibility & contrast

On white

8.03

#643C94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#643C94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C94

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C94	#FFFFFF	#000000	##FFFFFF
##643C94	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#135097

Deuteranopia (green-blind)

#255092

Tritanopia (blue-blind)

#5B4E62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #643c94;
/* rgb */ color: rgb(100, 60, 148);
/* oklch */ color: oklch(44.8% 0.140 302.0);

Tailwind

colors: {
  custom: {
    50: '#9373b4',
    500: '#643c94',
    950: '#000000',
  },
}

SCSS

$custom: #643c94;
$custom-light: #9373b4;
$custom-dark: #000000;

JSON

{
  "hex": "#643c94",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 148
  },
  "hsl": {
    "h": 267.273,
    "s": 42.308,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44767,
    "c": 0.14048,
    "h": 302
  },
  "luminance": 0.08079
}

Semantic roles & 50–950 ramp

primary

#643C94

secondary

#99B577

accent

#D2569A

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643C94

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

Preview Lab → · Contrast checker → · Palette generator →