#643BB0#643BB0

#643BB0 is a mid, vivid violet. Relative luminance 0.090; OKLCH L 46.7% C 0.176 H 294.7°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#643BB0
RGB	rgb(100, 59, 176)
HSL	hsl(261, 50%, 46%)
HSV	hsv(261, 66%, 69%)
CMYK	cmyk(43.2%, 66.5%, 0%, 31%)
CIE-LAB	lab(35.93, 44.27, -56.08)
CIE-LCH	lch(35.93, 71.45, 308.29°)
OKLab	oklab(46.69% 0.0737 -0.1602)
OKLCH	oklch(46.69% 0.176 294.7)
XYZ	xyz(14.6539, 8.9715, 42.0255)
Luminance	0.0897 (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

#643BB0 #87B03B

analogous

#3B4CB0 #643BB0 #9E3BB0

triadic

#643BB0 #B0643B #3BB064

tetradic

#643BB0 #B03B4C #87B03B #3BB09E

square

#643BB0 #B03B4C #87B03B #3BB09E

split-complementary

#643BB0 #B09E3B #4CB03B

monochromatic

#301C54 #4A2C82 #643BB0 #845FC9 #A78DD9

Accessibility & contrast

On white

7.52

#643BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#643BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BB0

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BB0	#FFFFFF	#000000	##FFFFFF
##643BB0	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B4

Deuteranopia (green-blind)

#0053AE

Tritanopia (blue-blind)

#4F5770

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #643bb0;
/* rgb */ color: rgb(100, 59, 176);
/* oklch */ color: oklch(46.7% 0.176 294.7);

Tailwind

colors: {
  custom: {
    50: '#9674c8',
    500: '#643bb0',
    950: '#000000',
  },
}

SCSS

$custom: #643bb0;
$custom-light: #9674c8;
$custom-dark: #000000;

JSON

{
  "hex": "#643bb0",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 261.026,
    "s": 49.787,
    "l": 46.078
  },
  "oklch": {
    "l": 0.46691,
    "c": 0.17638,
    "h": 294.7
  },
  "luminance": 0.08972
}

Semantic roles & 50–950 ramp

primary

#643BB0

secondary

#ADC383

accent

#D94EA9

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643BB0

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

Preview Lab → · Contrast checker → · Palette generator →