#643B9C#643B9C

#643B9C is a mid, vivid violet. Relative luminance 0.082; OKLCH L 45.2% C 0.152 H 299.8°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#643B9C
RGB	rgb(100, 59, 156)
HSL	hsl(265, 45%, 42%)
HSV	hsv(265, 62%, 61%)
CMYK	cmyk(35.9%, 62.2%, 0%, 38.8%)
CIE-LAB	lab(34.47, 38.86, -46.45)
CIE-LCH	lch(34.47, 60.56, 309.92°)
OKLab	oklab(45.18% 0.0755 -0.1319)
OKLCH	oklch(45.18% 0.152 299.8)
XYZ	xyz(12.8188, 8.2374, 32.3607)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B9C #739C3B

analogous

#3B439C #643B9C #953B9C

triadic

#643B9C #9C643B #3B9C64

tetradic

#643B9C #9C3B43 #739C3B #3B9C95

square

#643B9C #9C3B43 #739C3B #3B9C95

split-complementary

#643B9C #9C953B #439C3B

monochromatic

#2B1943 #482A70 #643B9C #8255BF #A382D0

Accessibility & contrast

On white

7.93

#643B9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#643B9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B9C

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B9C	#FFFFFF	#000000	##FFFFFF
##643B9C	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00519F

Deuteranopia (green-blind)

#17509A

Tritanopia (blue-blind)

#585066

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643b9c;
/* rgb */ color: rgb(100, 59, 156);
/* oklch */ color: oklch(45.2% 0.152 299.8);

Tailwind

colors: {
  custom: {
    50: '#9473ba',
    500: '#643b9c',
    950: '#000000',
  },
}

SCSS

$custom: #643b9c;
$custom-light: #9473ba;
$custom-dark: #000000;

JSON

{
  "hex": "#643b9c",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 156
  },
  "hsl": {
    "h": 265.361,
    "s": 45.116,
    "l": 42.157
  },
  "oklch": {
    "l": 0.45176,
    "c": 0.15197,
    "h": 299.8
  },
  "luminance": 0.08238
}

Semantic roles & 50–950 ramp

primary

#643B9C

secondary

#9EB979

accent

#D5539E

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643B9C

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

Preview Lab → · Contrast checker → · Palette generator →