#644E66#644E66

#644E66 is a mid, muted purple. Relative luminance 0.091; OKLCH L 45.6% C 0.047 H 323.6°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#644E66
RGB	rgb(100, 78, 102)
HSL	hsl(295, 13%, 35%)
HSV	hsv(295, 24%, 40%)
CMYK	cmyk(2%, 23.5%, 0%, 60%)
CIE-LAB	lab(36.21, 13.94, -10.40)
CIE-LCH	lch(36.21, 17.39, 323.27°)
OKLab	oklab(45.55% 0.038 -0.028)
OKLCH	oklch(45.55% 0.047 323.6)
XYZ	xyz(10.3779, 9.1176, 13.7810)
Luminance	0.0912 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644E66 #50664E

analogous

#584E66 #644E66 #664E5C

triadic

#644E66 #66644E #4E6664

tetradic

#644E66 #66584E #50664E #4E5C66

square

#644E66 #66584E #50664E #4E5C66

split-complementary

#644E66 #5C664E #4E6658

monochromatic

#201921 #423343 #644E66 #866989 #A389A5

Accessibility & contrast

On white

7.44

#644E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#644E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644E66

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644E66	#FFFFFF	#000000	##FFFFFF
##644E66	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5467

Deuteranopia (green-blind)

#515665

Tritanopia (blue-blind)

#655056

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #644e66;
/* rgb */ color: rgb(100, 78, 102);
/* oklch */ color: oklch(45.6% 0.047 323.6);

Tailwind

colors: {
  custom: {
    50: '#907f91',
    500: '#644e66',
    950: '#000000',
  },
}

SCSS

$custom: #644e66;
$custom-light: #907f91;
$custom-dark: #000000;

JSON

{
  "hex": "#644e66",
  "rgb": {
    "r": 100,
    "g": 78,
    "b": 102
  },
  "hsl": {
    "h": 295,
    "s": 13.333,
    "l": 35.294
  },
  "oklch": {
    "l": 0.4555,
    "c": 0.04721,
    "h": 323.6
  },
  "luminance": 0.09117
}

Semantic roles & 50–950 ramp

primary

#644E66

secondary

#7F937D

accent

#B67277

background

#F8F7F8

surface

#F0EEF0

border

#CBC9CB

text

#0C0A0C

muted

#7D7C7D

Preview Lab

Preview with #644E66

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

Preview Lab → · Contrast checker → · Palette generator →