#644D4E#644D4E

#644D4E is a dark, muted red. Relative luminance 0.086; OKLCH L 44.5% C 0.031 H 15.5°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#644D4E
RGB	rgb(100, 77, 78)
HSL	hsl(357, 13%, 35%)
HSV	hsv(357, 23%, 39%)
CMYK	cmyk(0%, 23%, 22%, 60.8%)
CIE-LAB	lab(35.14, 9.85, 3.13)
CIE-LCH	lch(35.14, 10.34, 17.61°)
OKLab	oklab(44.46% 0.03 0.0083)
OKLCH	oklch(44.46% 0.031 15.5)
XYZ	xyz(9.2846, 8.5675, 8.3709)
Luminance	0.0857 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644D4E #4D6463

analogous

#644D5A #644D4E #64584D

triadic

#644D4E #4E644D #4D4E64

tetradic

#644D4E #5A644D #4D6463 #584D64

square

#644D4E #5A644D #4D6463 #584D64

split-complementary

#644D4E #4D6458 #4D5A64

monochromatic

#1F1818 #413233 #644D4E #876869 #A38889

Accessibility & contrast

On white

7.74

#644D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#644D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644D4E

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644D4E	#FFFFFF	#000000	##FFFFFF
##644D4E	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51504E

Deuteranopia (green-blind)

#56544E

Tritanopia (blue-blind)

#694B4D

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #644d4e;
/* rgb */ color: rgb(100, 77, 78);
/* oklch */ color: oklch(44.5% 0.031 15.5);

Tailwind

colors: {
  custom: {
    50: '#907f7f',
    500: '#644d4e',
    950: '#000000',
  },
}

SCSS

$custom: #644d4e;
$custom-light: #907f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#644d4e",
  "rgb": {
    "r": 100,
    "g": 77,
    "b": 78
  },
  "hsl": {
    "h": 357.391,
    "s": 12.994,
    "l": 34.706
  },
  "oklch": {
    "l": 0.44459,
    "c": 0.03116,
    "h": 15.5
  },
  "luminance": 0.08567
}

Semantic roles & 50–950 ramp

primary

#644D4E

secondary

#7B9190

accent

#B6B372

background

#F8F7F7

surface

#F0EEEE

border

#CBC9C9

text

#0C0A0A

muted

#7D7C7C

Preview Lab

Preview with #644D4E

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

Preview Lab → · Contrast checker → · Palette generator →