#644CBB#644CBB

#644CBB is a mid, vivid violet. Relative luminance 0.115; OKLCH L 50.2% C 0.167 H 288.9°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#644CBB
RGB	rgb(100, 76, 187)
HSL	hsl(253, 45%, 52%)
HSV	hsv(253, 59%, 73%)
CMYK	cmyk(46.5%, 59.4%, 0%, 26.7%)
CIE-LAB	lab(40.35, 37.74, -55.40)
CIE-LCH	lch(40.35, 67.04, 304.26°)
OKLab	oklab(50.16% 0.0541 -0.1582)
OKLCH	oklch(50.16% 0.167 288.9)
XYZ	xyz(16.8071, 11.4654, 48.3316)
Luminance	0.1147 (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

#644CBB #A3BB4C

analogous

#4C6CBB #644CBB #9C4CBB

triadic

#644CBB #BB644C #4CBB64

tetradic

#644CBB #BB4C6C #A3BB4C #4CBB9C

square

#644CBB #BB4C6C #A3BB4C #4CBB9C

split-complementary

#644CBB #BB9C4C #6CBB4C

monochromatic

#342766 #4B3892 #644CBB #8A78CC #B1A5DD

Accessibility & contrast

On white

6.38

#644CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#644CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644CBB

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644CBB	#FFFFFF	#000000	##FFFFFF
##644CBB	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BF

Deuteranopia (green-blind)

#005CB9

Tritanopia (blue-blind)

#48657C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #644cbb;
/* rgb */ color: rgb(100, 76, 187);
/* oklch */ color: oklch(50.2% 0.167 288.9);

Tailwind

colors: {
  custom: {
    50: '#967fd0',
    500: '#644cbb',
    950: '#000000',
  },
}

SCSS

$custom: #644cbb;
$custom-light: #967fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#644cbb",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 187
  },
  "hsl": {
    "h": 252.973,
    "s": 44.939,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50162,
    "c": 0.16721,
    "h": 288.9
  },
  "luminance": 0.11466
}

Semantic roles & 50–950 ramp

primary

#644CBB

secondary

#BFCA99

accent

#D553B9

background

#F9F7FC

surface

#F2EEF9

border

#CCC9D2

text

#0E0A14

muted

#7E7C82

Preview Lab

Preview with #644CBB

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

Preview Lab → · Contrast checker → · Palette generator →