#643F9D#643F9D

#643F9D is a mid, vivid violet. Relative luminance 0.087; OKLCH L 45.9% C 0.147 H 298.6°. Best body text is #FFFFFF at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#643F9D
RGB	rgb(100, 63, 157)
HSL	hsl(264, 43%, 43%)
HSV	hsv(264, 60%, 62%)
CMYK	cmyk(36.3%, 59.9%, 0%, 38.4%)
CIE-LAB	lab(35.40, 36.85, -45.56)
CIE-LCH	lch(35.40, 58.60, 308.96°)
OKLab	oklab(45.87% 0.0704 -0.1293)
OKLCH	oklch(45.87% 0.147 298.6)
XYZ	xyz(13.1173, 8.6985, 32.8796)
Luminance	0.0870 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F9D #789D3F

analogous

#3F499D #643F9D #933F9D

triadic

#643F9D #9D643F #3F9D64

tetradic

#643F9D #9D3F49 #789D3F #3F9D93

square

#643F9D #9D3F49 #789D3F #3F9D93

split-complementary

#643F9D #9D933F #499D3F

monochromatic

#2C1C46 #482D71 #643F9D #825CBD #A487CF

Accessibility & contrast

On white

7.66

#643F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#643F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F9D

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F9D	#FFFFFF	#000000	##FFFFFF
##643F9D	1.00	7.66	2.74	7.66
#FFFFFF	7.66	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0953A0

Deuteranopia (green-blind)

#1E529B

Tritanopia (blue-blind)

#575368

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643f9d;
/* rgb */ color: rgb(100, 63, 157);
/* oklch */ color: oklch(45.9% 0.147 298.6);

Tailwind

colors: {
  custom: {
    50: '#9476ba',
    500: '#643f9d',
    950: '#000000',
  },
}

SCSS

$custom: #643f9d;
$custom-light: #9476ba;
$custom-dark: #000000;

JSON

{
  "hex": "#643f9d",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 157
  },
  "hsl": {
    "h": 263.617,
    "s": 42.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.45873,
    "c": 0.14725,
    "h": 298.6
  },
  "luminance": 0.08699
}

Semantic roles & 50–950 ramp

primary

#643F9D

secondary

#A2BA7E

accent

#D355A1

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0812

muted

#7E7B81

Preview Lab

Preview with #643F9D

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

Preview Lab → · Contrast checker → · Palette generator →