#643B9F#643B9F

#643B9F is a mid, vivid violet. Relative luminance 0.083; OKLCH L 45.4% C 0.156 H 298.9°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#643B9F
RGB	rgb(100, 59, 159)
HSL	hsl(265, 46%, 43%)
HSV	hsv(265, 63%, 62%)
CMYK	cmyk(37.1%, 62.9%, 0%, 37.6%)
CIE-LAB	lab(34.68, 39.66, -47.92)
CIE-LCH	lch(34.68, 62.21, 309.61°)
OKLab	oklab(45.4% 0.0753 -0.1362)
OKLCH	oklch(45.4% 0.156 298.9)
XYZ	xyz(13.0760, 8.3403, 33.7151)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B9F #769F3B

analogous

#3B449F #643B9F #963B9F

triadic

#643B9F #9F643B #3B9F64

tetradic

#643B9F #9F3B44 #769F3B #3B9F96

square

#643B9F #9F3B44 #769F3B #3B9F96

split-complementary

#643B9F #9F963B #449F3B

monochromatic

#2C1A46 #482A72 #643B9F #8257C1 #A383D1

Accessibility & contrast

On white

7.87

#643B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#643B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B9F

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B9F	#FFFFFF	#000000	##FFFFFF
##643B9F	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A2

Deuteranopia (green-blind)

#11519D

Tritanopia (blue-blind)

#575167

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643b9f;
/* rgb */ color: rgb(100, 59, 159);
/* oklch */ color: oklch(45.4% 0.156 298.9);

Tailwind

colors: {
  custom: {
    50: '#9473bc',
    500: '#643b9f',
    950: '#000000',
  },
}

SCSS

$custom: #643b9f;
$custom-light: #9473bc;
$custom-dark: #000000;

JSON

{
  "hex": "#643b9f",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 159
  },
  "hsl": {
    "h": 264.6,
    "s": 45.872,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45395,
    "c": 0.15567,
    "h": 298.9
  },
  "luminance": 0.0834
}

Semantic roles & 50–950 ramp

primary

#643B9F

secondary

#A1BB7B

accent

#D652A0

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643B9F

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

Preview Lab → · Contrast checker → · Palette generator →