#644A60#644A60

#644A60 is a dark, muted purple. Relative luminance 0.085; OKLCH L 44.5% C 0.049 H 331.7°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#644A60
RGB	rgb(100, 74, 96)
HSL	hsl(309, 15%, 34%)
HSV	hsv(309, 26%, 39%)
CMYK	cmyk(0%, 26%, 4%, 60.8%)
CIE-LAB	lab(34.91, 15.16, -8.59)
CIE-LCH	lch(34.91, 17.42, 330.45°)
OKLab	oklab(44.47% 0.0428 -0.023)
OKLCH	oklch(44.47% 0.049 331.7)
XYZ	xyz(9.8155, 8.4517, 12.1784)
Luminance	0.0845 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644A60 #4A644E

analogous

#5B4A64 #644A60 #644A53

triadic

#644A60 #60644A #4A6064

tetradic

#644A60 #645B4A #4A644E #4A5364

square

#644A60 #645B4A #4A644E #4A5364

split-complementary

#644A60 #53644A #4A645B

monochromatic

#1E161C #41303E #644A60 #876482 #A4849F

Accessibility & contrast

On white

7.81

#644A60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#644A60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644A60

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644A60	#FFFFFF	#000000	##FFFFFF
##644A60	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495061

Deuteranopia (green-blind)

#4F535F

Tritanopia (blue-blind)

#664B52

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #644a60;
/* rgb */ color: rgb(100, 74, 96);
/* oklch */ color: oklch(44.5% 0.049 331.7);

Tailwind

colors: {
  custom: {
    50: '#907c8d',
    500: '#644a60',
    950: '#000000',
  },
}

SCSS

$custom: #644a60;
$custom-light: #907c8d;
$custom-dark: #000000;

JSON

{
  "hex": "#644a60",
  "rgb": {
    "r": 100,
    "g": 74,
    "b": 96
  },
  "hsl": {
    "h": 309.231,
    "s": 14.943,
    "l": 34.118
  },
  "oklch": {
    "l": 0.44475,
    "c": 0.04854,
    "h": 331.7
  },
  "luminance": 0.08451
}

Semantic roles & 50–950 ramp

primary

#644A60

secondary

#78927C

accent

#B87B70

background

#F8F7F8

surface

#F0EEF0

border

#CBC9CB

text

#0C090C

muted

#7D7B7D

Preview Lab

Preview with #644A60

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

Preview Lab → · Contrast checker → · Palette generator →