#644C52#644C52

#644C52 is a dark, muted red. Relative luminance 0.085; OKLCH L 44.4% C 0.034 H 1.9°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#644C52
RGB	rgb(100, 76, 82)
HSL	hsl(345, 14%, 35%)
HSV	hsv(345, 24%, 39%)
CMYK	cmyk(0%, 24%, 18%, 60.8%)
CIE-LAB	lab(34.98, 11.18, 0.37)
CIE-LCH	lch(34.98, 11.19, 1.89°)
OKLab	oklab(44.38% 0.0336 0.0011)
OKLCH	oklch(44.38% 0.034 1.9)
XYZ	xyz(9.3630, 8.4878, 9.1261)
Luminance	0.0849 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644C52 #4C645E

analogous

#644C5E #644C52 #64524C

triadic

#644C52 #52644C #4C5264

tetradic

#644C52 #5E644C #4C645E #524C64

square

#644C52 #5E644C #4C645E #524C64

split-complementary

#644C52 #4C6452 #4C5E64

monochromatic

#1E1719 #413235 #644C52 #87666F #A4878E

Accessibility & contrast

On white

7.79

#644C52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#644C52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644C52

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644C52	#FFFFFF	#000000	##FFFFFF
##644C52	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F5052

Deuteranopia (green-blind)

#555452

Tritanopia (blue-blind)

#684B4E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #644c52;
/* rgb */ color: rgb(100, 76, 82);
/* oklch */ color: oklch(44.4% 0.034 1.9);

Tailwind

colors: {
  custom: {
    50: '#907e82',
    500: '#644c52',
    950: '#000000',
  },
}

SCSS

$custom: #644c52;
$custom-light: #907e82;
$custom-dark: #000000;

JSON

{
  "hex": "#644c52",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 82
  },
  "hsl": {
    "h": 345,
    "s": 13.636,
    "l": 34.51
  },
  "oklch": {
    "l": 0.44375,
    "c": 0.0336,
    "h": 1.9
  },
  "luminance": 0.08487
}

Semantic roles & 50–950 ramp

primary

#644C52

secondary

#7A918C

accent

#B6A571

background

#F8F7F7

surface

#F0EEEE

border

#CBC9C9

text

#0C0A0A

muted

#7D7C7C

Preview Lab

Preview with #644C52

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

Preview Lab → · Contrast checker → · Palette generator →