#643BB5#643BB5

#643BB5 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 47.1% C 0.182 H 293.6°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#643BB5
RGB	rgb(100, 59, 181)
HSL	hsl(260, 51%, 47%)
HSV	hsv(260, 67%, 71%)
CMYK	cmyk(44.8%, 67.4%, 0%, 29%)
CIE-LAB	lab(36.32, 45.65, -58.42)
CIE-LCH	lch(36.32, 74.14, 308.00°)
OKLab	oklab(47.09% 0.0731 -0.1671)
OKLCH	oklch(47.09% 0.182 293.6)
XYZ	xyz(15.1577, 9.1730, 44.6790)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.13

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643BB5 #8CB53B

analogous

#3B4FB5 #643BB5 #A13BB5

triadic

#643BB5 #B5643B #3BB564

tetradic

#643BB5 #B53B4F #8CB53B #3BB5A1

square

#643BB5 #B53B4F #8CB53B #3BB5A1

split-complementary

#643BB5 #B5A13B #4FB53B

monochromatic

#311D59 #4B2C87 #643BB5 #8562CC #A990DB

Accessibility & contrast

On white

7.41

#643BB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#643BB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BB5

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BB5	#FFFFFF	#000000	##FFFFFF
##643BB5	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B9

Deuteranopia (green-blind)

#0053B3

Tritanopia (blue-blind)

#4D5973

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643bb5;
/* rgb */ color: rgb(100, 59, 181);
/* oklch */ color: oklch(47.1% 0.182 293.6);

Tailwind

colors: {
  custom: {
    50: '#9774cc',
    500: '#643bb5',
    950: '#000000',
  },
}

SCSS

$custom: #643bb5;
$custom-light: #9774cc;
$custom-dark: #000000;

JSON

{
  "hex": "#643bb5",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 181
  },
  "hsl": {
    "h": 260.164,
    "s": 50.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.4709,
    "c": 0.18237,
    "h": 293.6
  },
  "luminance": 0.09173
}

Semantic roles & 50–950 ramp

primary

#643BB5

secondary

#B0C686

accent

#DA4DAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643BB5

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

Preview Lab → · Contrast checker → · Palette generator →