#664640#664640

#664640 is a dark, muted red. Relative luminance 0.076; OKLCH L 42.8% C 0.046 H 30.9°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#664640
RGB	rgb(102, 70, 64)
HSL	hsl(9, 23%, 33%)
HSV	hsv(9, 37%, 40%)
CMYK	cmyk(0%, 31.4%, 37.3%, 60%)
CIE-LAB	lab(33.08, 12.86, 9.12)
CIE-LCH	lch(33.08, 15.77, 35.34°)
OKLab	oklab(42.8% 0.0391 0.0234)
OKLCH	oklch(42.8% 0.046 30.9)
XYZ	xyz(8.5953, 7.5758, 5.8590)
Luminance	0.0757 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#664640 #406066

analogous

#66404D #664640 #665940

triadic

#664640 #406646 #464066

tetradic

#664640 #4D6640 #406066 #594066

square

#664640 #4D6640 #406066 #594066

split-complementary

#664640 #406659 #404D66

monochromatic

#1B1211 #402C28 #664640 #8C6058 #AA7F77

Accessibility & contrast

On white

8.35

#664640 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#664640 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #664640

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##664640	#FFFFFF	#000000	##FFFFFF
##664640	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D4A3F

Deuteranopia (green-blind)

#555040

Tritanopia (blue-blind)

#6D4244

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #664640;
/* rgb */ color: rgb(102, 70, 64);
/* oklch */ color: oklch(42.8% 0.046 30.9);

Tailwind

colors: {
  custom: {
    50: '#937974',
    500: '#664640',
    950: '#000000',
  },
}

SCSS

$custom: #664640;
$custom-light: #937974;
$custom-dark: #000000;

JSON

{
  "hex": "#664640",
  "rgb": {
    "r": 102,
    "g": 70,
    "b": 64
  },
  "hsl": {
    "h": 9.474,
    "s": 22.892,
    "l": 32.549
  },
  "oklch": {
    "l": 0.428,
    "c": 0.04561,
    "h": 30.9
  },
  "luminance": 0.07575
}

Semantic roles & 50–950 ramp

primary

#664640

secondary

#6D8F95

accent

#B2BF68

background

#F9F7F7

surface

#F1EDED

border

#CBC8C8

text

#0D0908

muted

#7E7B7B

Preview Lab

Preview with #664640

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

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