#644C47#644C47

#644C47 is a dark, muted red. Relative luminance 0.083; OKLCH L 44.0% C 0.034 H 31.9°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#644C47
RGB	rgb(100, 76, 71)
HSL	hsl(10, 17%, 34%)
HSV	hsv(10, 29%, 39%)
CMYK	cmyk(0%, 24%, 29%, 60.8%)
CIE-LAB	lab(34.67, 9.31, 6.88)
CIE-LCH	lch(34.67, 11.57, 36.45°)
OKLab	oklab(44.03% 0.0287 0.0179)
OKLCH	oklch(44.03% 0.034 31.9)
XYZ	xyz(8.9775, 8.3336, 7.0957)
Luminance	0.0833 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644C47 #475F64

analogous

#644750 #644C47 #645A47

triadic

#644C47 #47644C #4C4764

tetradic

#644C47 #506447 #475F64 #5A4764

square

#644C47 #506447 #475F64 #5A4764

split-complementary

#644C47 #47645A #475064

monochromatic

#1C1614 #40312E #644C47 #886760 #A58780

Accessibility & contrast

On white

7.88

#644C47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#644C47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644C47

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644C47	#FFFFFF	#000000	##FFFFFF
##644C47	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514F47

Deuteranopia (green-blind)

#575347

Tritanopia (blue-blind)

#6A494B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #644c47;
/* rgb */ color: rgb(100, 76, 71);
/* oklch */ color: oklch(44.0% 0.034 31.9);

Tailwind

colors: {
  custom: {
    50: '#917e7a',
    500: '#644c47',
    950: '#000000',
  },
}

SCSS

$custom: #644c47;
$custom-light: #917e7a;
$custom-dark: #000000;

JSON

{
  "hex": "#644c47",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 71
  },
  "hsl": {
    "h": 10.345,
    "s": 16.959,
    "l": 33.529
  },
  "oklch": {
    "l": 0.44032,
    "c": 0.03379,
    "h": 31.9
  },
  "luminance": 0.08333
}

Semantic roles & 50–950 ramp

primary

#644C47

secondary

#758D92

accent

#ADBA6E

background

#F8F7F7

surface

#F0EEED

border

#CBC9C8

text

#0D0909

muted

#7D7B7B

Preview Lab

Preview with #644C47

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

Preview Lab → · Contrast checker → · Palette generator →