#644B60#644B60

#644B60 is a dark, muted purple. Relative luminance 0.086; OKLCH L 44.7% C 0.046 H 331.9°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#644B60
RGB	rgb(100, 75, 96)
HSL	hsl(310, 14%, 34%)
HSV	hsv(310, 25%, 39%)
CMYK	cmyk(0%, 25%, 4%, 60.8%)
CIE-LAB	lab(35.18, 14.53, -8.19)
CIE-LCH	lch(35.18, 16.68, 330.60°)
OKLab	oklab(44.68% 0.041 -0.0219)
OKLCH	oklch(44.68% 0.046 331.9)
XYZ	xyz(9.8827, 8.5863, 12.2008)
Luminance	0.0859 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644B60 #4B644F

analogous

#5C4B64 #644B60 #644B54

triadic

#644B60 #60644B #4B6064

tetradic

#644B60 #645C4B #4B644F #4B5464

square

#644B60 #645C4B #4B644F #4B5464

split-complementary

#644B60 #54644B #4B645C

monochromatic

#1E171D #41313E #644B60 #876582 #A4869F

Accessibility & contrast

On white

7.73

#644B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#644B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644B60

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644B60	#FFFFFF	#000000	##FFFFFF
##644B60	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5161

Deuteranopia (green-blind)

#50545F

Tritanopia (blue-blind)

#664C52

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #644b60;
/* rgb */ color: rgb(100, 75, 96);
/* oklch */ color: oklch(44.7% 0.046 331.9);

Tailwind

colors: {
  custom: {
    50: '#907d8d',
    500: '#644b60',
    950: '#000000',
  },
}

SCSS

$custom: #644b60;
$custom-light: #907d8d;
$custom-dark: #000000;

JSON

{
  "hex": "#644b60",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 96
  },
  "hsl": {
    "h": 309.6,
    "s": 14.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.44682,
    "c": 0.04648,
    "h": 331.9
  },
  "luminance": 0.08586
}

Semantic roles & 50–950 ramp

primary

#644B60

secondary

#79927D

accent

#B77C71

background

#F8F7F8

surface

#F0EEF0

border

#CBC9CB

text

#0C090C

muted

#7D7B7D

Preview Lab

Preview with #644B60

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

Preview Lab → · Contrast checker → · Palette generator →