#644C4A#644C4A

#644C4A is a dark, muted red. Relative luminance 0.084; OKLCH L 44.1% C 0.033 H 24.0°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#644C4A
RGB	rgb(100, 76, 74)
HSL	hsl(5, 15%, 34%)
HSV	hsv(5, 26%, 39%)
CMYK	cmyk(0%, 24%, 26%, 60.8%)
CIE-LAB	lab(34.75, 9.80, 5.09)
CIE-LCH	lch(34.75, 11.04, 27.48°)
OKLab	oklab(44.12% 0.0301 0.0134)
OKLCH	oklch(44.12% 0.033 24)
XYZ	xyz(9.0761, 8.3730, 7.6153)
Luminance	0.0837 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644C4A #4A6264

analogous

#644A55 #644C4A #64594A

triadic

#644C4A #4A644C #4C4A64

tetradic

#644C4A #55644A #4A6264 #594A64

square

#644C4A #55644A #4A6264 #594A64

split-complementary

#644C4A #4A6459 #4A5564

monochromatic

#1E1716 #413130 #644C4A #876764 #A48784

Accessibility & contrast

On white

7.85

#644C4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#644C4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644C4A

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644C4A	#FFFFFF	#000000	##FFFFFF
##644C4A	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514F4A

Deuteranopia (green-blind)

#56534A

Tritanopia (blue-blind)

#69494C

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #644c4a;
/* rgb */ color: rgb(100, 76, 74);
/* oklch */ color: oklch(44.1% 0.033 24.0);

Tailwind

colors: {
  custom: {
    50: '#907e7c',
    500: '#644c4a',
    950: '#000000',
  },
}

SCSS

$custom: #644c4a;
$custom-light: #907e7c;
$custom-dark: #000000;

JSON

{
  "hex": "#644c4a",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 74
  },
  "hsl": {
    "h": 4.615,
    "s": 14.943,
    "l": 34.118
  },
  "oklch": {
    "l": 0.4412,
    "c": 0.03289,
    "h": 24
  },
  "luminance": 0.08373
}

Semantic roles & 50–950 ramp

primary

#644C4A

secondary

#789092

accent

#B2B870

background

#F8F7F7

surface

#F0EEEE

border

#CBC9C9

text

#0C0909

muted

#7D7B7B

Preview Lab

Preview with #644C4A

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

Preview Lab → · Contrast checker → · Palette generator →