#644CBA#644CBA

#644CBA is a mid, vivid violet. Relative luminance 0.114; OKLCH L 50.1% C 0.166 H 289.0°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#644CBA
RGB	rgb(100, 76, 186)
HSL	hsl(253, 44%, 51%)
HSV	hsv(253, 59%, 73%)
CMYK	cmyk(46.2%, 59.1%, 0%, 27.1%)
CIE-LAB	lab(40.28, 37.45, -54.93)
CIE-LCH	lch(40.28, 66.48, 304.28°)
OKLab	oklab(50.09% 0.0541 -0.1568)
OKLCH	oklch(50.09% 0.166 289)
XYZ	xyz(16.7004, 11.4227, 47.7697)
Luminance	0.1142 (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

#644CBA #A2BA4C

analogous

#4C6BBA #644CBA #9B4CBA

triadic

#644CBA #BA644C #4CBA64

tetradic

#644CBA #BA4C6B #A2BA4C #4CBA9B

square

#644CBA #BA4C6B #A2BA4C #4CBA9B

split-complementary

#644CBA #BA9B4C #6BBA4C

monochromatic

#342765 #4B3891 #644CBA #8A78CB #B1A4DC

Accessibility & contrast

On white

6.39

#644CBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#644CBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644CBA

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644CBA	#FFFFFF	#000000	##FFFFFF
##644CBA	1.00	6.39	3.28	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BE

Deuteranopia (green-blind)

#005CB8

Tritanopia (blue-blind)

#49657B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #644cba;
/* rgb */ color: rgb(100, 76, 186);
/* oklch */ color: oklch(50.1% 0.166 289.0);

Tailwind

colors: {
  custom: {
    50: '#967fcf',
    500: '#644cba',
    950: '#000000',
  },
}

SCSS

$custom: #644cba;
$custom-light: #967fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#644cba",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 186
  },
  "hsl": {
    "h": 253.091,
    "s": 44.355,
    "l": 51.373
  },
  "oklch": {
    "l": 0.50089,
    "c": 0.16591,
    "h": 289
  },
  "luminance": 0.11423
}

Semantic roles & 50–950 ramp

primary

#644CBA

secondary

#BFC999

accent

#D454B8

background

#F9F7FC

surface

#F2EEF9

border

#CCC9D2

text

#0E0A14

muted

#7E7C82

Preview Lab

Preview with #644CBA

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

Preview Lab → · Contrast checker → · Palette generator →