#643E99#643E99

#643E99 is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.4% C 0.144 H 300.0°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#643E99
RGB	rgb(100, 62, 153)
HSL	hsl(265, 42%, 42%)
HSV	hsv(265, 59%, 60%)
CMYK	cmyk(34.6%, 59.5%, 0%, 40%)
CIE-LAB	lab(34.91, 36.35, -43.92)
CIE-LCH	lch(34.91, 57.01, 309.61°)
OKLab	oklab(45.43% 0.0718 -0.1245)
OKLCH	oklch(45.43% 0.144 300)
XYZ	xyz(12.7265, 8.4544, 31.0922)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E99 #73993E

analogous

#3E4599 #643E99 #923E99

triadic

#643E99 #99643E #3E9964

tetradic

#643E99 #993E45 #73993E #3E9992

square

#643E99 #993E45 #73993E #3E9992

split-complementary

#643E99 #99923E #45993E

monochromatic

#2B1B42 #482C6D #643E99 #8259BC #A384CD

Accessibility & contrast

On white

7.80

#643E99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#643E99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E99

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E99	#FFFFFF	#000000	##FFFFFF
##643E99	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F529C

Deuteranopia (green-blind)

#225197

Tritanopia (blue-blind)

#595165

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643e99;
/* rgb */ color: rgb(100, 62, 153);
/* oklch */ color: oklch(45.4% 0.144 300.0);

Tailwind

colors: {
  custom: {
    50: '#9475b8',
    500: '#643e99',
    950: '#000000',
  },
}

SCSS

$custom: #643e99;
$custom-light: #9475b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643e99",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 153
  },
  "hsl": {
    "h": 265.055,
    "s": 42.326,
    "l": 42.157
  },
  "oklch": {
    "l": 0.45432,
    "c": 0.1437,
    "h": 300
  },
  "luminance": 0.08454
}

Semantic roles & 50–950 ramp

primary

#643E99

secondary

#9EB87B

accent

#D2569E

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643E99

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

Preview Lab → · Contrast checker → · Palette generator →