#643DB1#643DB1

#643DB1 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 47.1% C 0.175 H 294.1°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#643DB1
RGB	rgb(100, 61, 177)
HSL	hsl(260, 49%, 47%)
HSV	hsv(260, 66%, 69%)
CMYK	cmyk(43.5%, 65.5%, 0%, 30.6%)
CIE-LAB	lab(36.41, 43.46, -55.90)
CIE-LCH	lch(36.41, 70.81, 307.86°)
OKLab	oklab(47.06% 0.0714 -0.1597)
OKLCH	oklch(47.06% 0.175 294.1)
XYZ	xyz(14.8579, 9.2207, 42.5834)
Luminance	0.0922 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DB1 #8AB13D

analogous

#3D50B1 #643DB1 #9E3DB1

triadic

#643DB1 #B1643D #3DB164

tetradic

#643DB1 #B13D50 #8AB13D #3DB19E

square

#643DB1 #B13D50 #8AB13D #3DB19E

split-complementary

#643DB1 #B19E3D #50B13D

monochromatic

#311E56 #4A2D83 #643DB1 #8562C9 #A890D9

Accessibility & contrast

On white

7.38

#643DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#643DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DB1

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DB1	#FFFFFF	#000000	##FFFFFF
##643DB1	1.00	7.38	2.84	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B5

Deuteranopia (green-blind)

#0054AF

Tritanopia (blue-blind)

#4F5871

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #643db1;
/* rgb */ color: rgb(100, 61, 177);
/* oklch */ color: oklch(47.1% 0.175 294.1);

Tailwind

colors: {
  custom: {
    50: '#9675c9',
    500: '#643db1',
    950: '#000000',
  },
}

SCSS

$custom: #643db1;
$custom-light: #9675c9;
$custom-dark: #000000;

JSON

{
  "hex": "#643db1",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 177
  },
  "hsl": {
    "h": 260.172,
    "s": 48.739,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47059,
    "c": 0.17496,
    "h": 294.1
  },
  "luminance": 0.09221
}

Semantic roles & 50–950 ramp

primary

#643DB1

secondary

#AFC486

accent

#D850AA

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643DB1

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

Preview Lab → · Contrast checker → · Palette generator →