#644B4E#644B4E

#644B4E is a dark, muted red. Relative luminance 0.083; OKLCH L 44.0% C 0.034 H 10.5°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#644B4E
RGB	rgb(100, 75, 78)
HSL	hsl(353, 14%, 34%)
HSV	hsv(353, 25%, 39%)
CMYK	cmyk(0%, 25%, 22%, 60.8%)
CIE-LAB	lab(34.58, 11.10, 2.33)
CIE-LCH	lch(34.58, 11.34, 11.84°)
OKLab	oklab(44.03% 0.0337 0.0063)
OKLCH	oklch(44.03% 0.034 10.5)
XYZ	xyz(9.1468, 8.2919, 8.3250)
Luminance	0.0829 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644B4E #4B6461

analogous

#644B5B #644B4E #64554B

triadic

#644B4E #4E644B #4B4E64

tetradic

#644B4E #5B644B #4B6461 #554B64

square

#644B4E #5B644B #4B6461 #554B64

split-complementary

#644B4E #4B6455 #4B5B64

monochromatic

#1E1717 #413133 #644B4E #876569 #A48689

Accessibility & contrast

On white

7.90

#644B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#644B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644B4E

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644B4E	#FFFFFF	#000000	##FFFFFF
##644B4E	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4F4E

Deuteranopia (green-blind)

#55534E

Tritanopia (blue-blind)

#69494C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #644b4e;
/* rgb */ color: rgb(100, 75, 78);
/* oklch */ color: oklch(44.0% 0.034 10.5);

Tailwind

colors: {
  custom: {
    50: '#907d7f',
    500: '#644b4e',
    950: '#000000',
  },
}

SCSS

$custom: #644b4e;
$custom-light: #907d7f;
$custom-dark: #000000;

JSON

{
  "hex": "#644b4e",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 78
  },
  "hsl": {
    "h": 352.8,
    "s": 14.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.4403,
    "c": 0.03423,
    "h": 10.5
  },
  "luminance": 0.08292
}

Semantic roles & 50–950 ramp

primary

#644B4E

secondary

#79928F

accent

#B7AF71

background

#F8F7F7

surface

#F0EEEE

border

#CBC9C9

text

#0C090A

muted

#7D7B7C

Preview Lab

Preview with #644B4E

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

Preview Lab → · Contrast checker → · Palette generator →