#644CB1#644CB1

#644CB1 is a mid, vivid violet. Relative luminance 0.111; OKLCH L 49.4% C 0.154 H 290.6°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#644CB1
RGB	rgb(100, 76, 177)
HSL	hsl(254, 40%, 50%)
HSV	hsv(254, 57%, 69%)
CMYK	cmyk(43.5%, 57.1%, 0%, 30.6%)
CIE-LAB	lab(39.67, 34.82, -50.63)
CIE-LCH	lch(39.67, 61.45, 304.52°)
OKLab	oklab(49.44% 0.0542 -0.1442)
OKLCH	oklch(49.44% 0.154 290.6)
XYZ	xyz(15.7736, 11.0520, 42.8886)
Luminance	0.1105 (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

#644CB1 #99B14C

analogous

#4C67B1 #644CB1 #964CB1

triadic

#644CB1 #B1644C #4CB164

tetradic

#644CB1 #B14C67 #99B14C #4CB196

square

#644CB1 #B14C67 #99B14C #4CB196

split-complementary

#644CB1 #B1964C #67B14C

monochromatic

#34275B #4C3A86 #644CB1 #8976C4 #AEA1D7

Accessibility & contrast

On white

6.54

#644CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#644CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644CB1

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644CB1	#FFFFFF	#000000	##FFFFFF
##644CB1	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#115FB4

Deuteranopia (green-blind)

#175BAF

Tritanopia (blue-blind)

#4E6277

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #644cb1;
/* rgb */ color: rgb(100, 76, 177);
/* oklch */ color: oklch(49.4% 0.154 290.6);

Tailwind

colors: {
  custom: {
    50: '#957fc9',
    500: '#644cb1',
    950: '#000000',
  },
}

SCSS

$custom: #644cb1;
$custom-light: #957fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#644cb1",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 177
  },
  "hsl": {
    "h": 254.257,
    "s": 39.921,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49439,
    "c": 0.15404,
    "h": 290.6
  },
  "luminance": 0.11053
}

Semantic roles & 50–950 ramp

primary

#644CB1

secondary

#B9C395

accent

#D058B3

background

#F9F7FC

surface

#F2EEF8

border

#CCC9D1

text

#0E0A13

muted

#7E7C82

Preview Lab

Preview with #644CB1

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

Preview Lab → · Contrast checker → · Palette generator →