#644CB5#644CB5

#644CB5 is a mid, vivid violet. Relative luminance 0.112; OKLCH L 49.7% C 0.159 H 289.9°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#644CB5
RGB	rgb(100, 76, 181)
HSL	hsl(254, 42%, 50%)
HSV	hsv(254, 58%, 71%)
CMYK	cmyk(44.8%, 58%, 0%, 29%)
CIE-LAB	lab(39.94, 35.98, -52.55)
CIE-LCH	lch(39.94, 63.69, 304.40°)
OKLab	oklab(49.73% 0.0542 -0.1498)
OKLCH	oklch(49.73% 0.159 289.9)
XYZ	xyz(16.1781, 11.2138, 45.0192)
Luminance	0.1121 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.50

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644CB5 #9DB54C

analogous

#4C69B5 #644CB5 #984CB5

triadic

#644CB5 #B5644C #4CB564

tetradic

#644CB5 #B54C69 #9DB54C #4CB598

square

#644CB5 #B54C69 #9DB54C #4CB598

split-complementary

#644CB5 #B5984C #69B54C

monochromatic

#34275F #4C398B #644CB5 #8977C7 #AFA3D9

Accessibility & contrast

On white

6.48

#644CB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#644CB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644CB5

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644CB5	#FFFFFF	#000000	##FFFFFF
##644CB5	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0360B8

Deuteranopia (green-blind)

#0C5CB3

Tritanopia (blue-blind)

#4C6379

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #644cb5;
/* rgb */ color: rgb(100, 76, 181);
/* oklch */ color: oklch(49.7% 0.159 289.9);

Tailwind

colors: {
  custom: {
    50: '#967fcc',
    500: '#644cb5',
    950: '#000000',
  },
}

SCSS

$custom: #644cb5;
$custom-light: #967fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#644cb5",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 181
  },
  "hsl": {
    "h": 253.714,
    "s": 41.502,
    "l": 50.392
  },
  "oklch": {
    "l": 0.49725,
    "c": 0.15933,
    "h": 289.9
  },
  "luminance": 0.11214
}

Semantic roles & 50–950 ramp

primary

#644CB5

secondary

#BBC697

accent

#D156B5

background

#F9F7FC

surface

#F2EEF9

border

#CCC9D2

text

#0E0A13

muted

#7E7C82

Preview Lab

Preview with #644CB5

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

Preview Lab → · Contrast checker → · Palette generator →