#644FB1#644FB1

#644FB1 is a mid, vivid violet. Relative luminance 0.115; OKLCH L 50.0% C 0.150 H 289.7°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#644FB1
RGB	rgb(100, 79, 177)
HSL	hsl(253, 39%, 50%)
HSV	hsv(253, 55%, 69%)
CMYK	cmyk(43.5%, 55.4%, 0%, 30.6%)
CIE-LAB	lab(40.37, 33.02, -49.50)
CIE-LCH	lch(40.37, 59.50, 303.71°)
OKLab	oklab(49.96% 0.0506 -0.1409)
OKLCH	oklch(49.96% 0.15 289.7)
XYZ	xyz(15.9851, 11.4751, 42.9591)
Luminance	0.1148 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644FB1 #9CB14F

analogous

#4F6BB1 #644FB1 #954FB1

triadic

#644FB1 #B1644F #4FB164

tetradic

#644FB1 #B14F6B #9CB14F #4FB195

square

#644FB1 #B14F6B #9CB14F #4FB195

split-complementary

#644FB1 #B1954F #6BB14F

monochromatic

#34295D #4C3C87 #644FB1 #8979C4 #AFA4D7

Accessibility & contrast

On white

6.37

#644FB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#644FB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644FB1

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644FB1	#FFFFFF	#000000	##FFFFFF
##644FB1	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C61B4

Deuteranopia (green-blind)

#1F5DAF

Tritanopia (blue-blind)

#4E6478

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #644fb1;
/* rgb */ color: rgb(100, 79, 177);
/* oklch */ color: oklch(50.0% 0.150 289.7);

Tailwind

colors: {
  custom: {
    50: '#9581c9',
    500: '#644fb1',
    950: '#000000',
  },
}

SCSS

$custom: #644fb1;
$custom-light: #9581c9;
$custom-dark: #000000;

JSON

{
  "hex": "#644fb1",
  "rgb": {
    "r": 100,
    "g": 79,
    "b": 177
  },
  "hsl": {
    "h": 252.857,
    "s": 38.583,
    "l": 50.196
  },
  "oklch": {
    "l": 0.49958,
    "c": 0.14966,
    "h": 289.7
  },
  "luminance": 0.11476
}

Semantic roles & 50–950 ramp

primary

#644FB1

secondary

#BAC498

accent

#CF59B5

background

#F9F7FC

surface

#F2EEF8

border

#CCC9D1

text

#0E0A13

muted

#7E7C82

Preview Lab

Preview with #644FB1

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

Preview Lab → · Contrast checker → · Palette generator →