#643E9B#643E9B

#643E9B is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.6% C 0.146 H 299.4°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#643E9B
RGB	rgb(100, 62, 155)
HSL	hsl(265, 43%, 43%)
HSV	hsv(265, 60%, 61%)
CMYK	cmyk(35.5%, 60%, 0%, 39.2%)
CIE-LAB	lab(35.05, 36.88, -44.92)
CIE-LCH	lch(35.05, 58.12, 309.39°)
OKLab	oklab(45.57% 0.0717 -0.1274)
OKLCH	oklch(45.57% 0.146 299.4)
XYZ	xyz(12.8931, 8.5210, 31.9694)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E9B #759B3E

analogous

#3E479B #643E9B #923E9B

triadic

#643E9B #9B643E #3E9B64

tetradic

#643E9B #9B3E47 #759B3E #3E9B92

square

#643E9B #9B3E47 #759B3E #3E9B92

split-complementary

#643E9B #9B923E #479B3E

monochromatic

#2C1B44 #482D6F #643E9B #8259BD #A385CE

Accessibility & contrast

On white

7.77

#643E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E9B

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E9B	#FFFFFF	#000000	##FFFFFF
##643E9B	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A529E

Deuteranopia (green-blind)

#1F5299

Tritanopia (blue-blind)

#585166

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643e9b;
/* rgb */ color: rgb(100, 62, 155);
/* oklch */ color: oklch(45.6% 0.146 299.4);

Tailwind

colors: {
  custom: {
    50: '#9475b9',
    500: '#643e9b',
    950: '#000000',
  },
}

SCSS

$custom: #643e9b;
$custom-light: #9475b9;
$custom-dark: #000000;

JSON

{
  "hex": "#643e9b",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 155
  },
  "hsl": {
    "h": 264.516,
    "s": 42.857,
    "l": 42.549
  },
  "oklch": {
    "l": 0.45572,
    "c": 0.14623,
    "h": 299.4
  },
  "luminance": 0.08521
}

Semantic roles & 50–950 ramp

primary

#643E9B

secondary

#A0B97C

accent

#D3559F

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643E9B

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

Preview Lab → · Contrast checker → · Palette generator →