#663E47#663E47

#663E47 is a dark, muted red. Relative luminance 0.067; OKLCH L 41.4% C 0.057 H 5.2°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#663E47
RGB	rgb(102, 62, 71)
HSL	hsl(347, 24%, 32%)
HSV	hsv(347, 39%, 40%)
CMYK	cmyk(0%, 39.2%, 30.4%, 60%)
CIE-LAB	lab(31.17, 18.85, 1.91)
CIE-LCH	lch(31.17, 18.94, 5.79°)
OKLab	oklab(41.4% 0.0571 0.0052)
OKLCH	oklch(41.4% 0.057 5.2)
XYZ	xyz(8.3397, 6.7255, 6.8189)
Luminance	0.0673 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663E47 #3E665D

analogous

#663E5B #663E47 #66493E

triadic

#663E47 #47663E #3E4766

tetradic

#663E47 #5B663E #3E665D #493E66

square

#663E47 #5B663E #3E665D #493E66

split-complementary

#663E47 #3E6649 #3E5B66

monochromatic

#1A1012 #40272D #663E47 #8C5561 #AA7480

Accessibility & contrast

On white

8.96

#663E47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#663E47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663E47

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663E47	#FFFFFF	#000000	##FFFFFF
##663E47	1.00	8.96	2.35	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444547

Deuteranopia (green-blind)

#4E4C46

Tritanopia (blue-blind)

#6D3B41

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #663e47;
/* rgb */ color: rgb(102, 62, 71);
/* oklch */ color: oklch(41.4% 0.057 5.2);

Tailwind

colors: {
  custom: {
    50: '#93747a',
    500: '#663e47',
    950: '#000000',
  },
}

SCSS

$custom: #663e47;
$custom-light: #93747a;
$custom-dark: #000000;

JSON

{
  "hex": "#663e47",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 71
  },
  "hsl": {
    "h": 346.5,
    "s": 24.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.41395,
    "c": 0.05729,
    "h": 5.2
  },
  "luminance": 0.06725
}

Semantic roles & 50–950 ramp

primary

#663E47

secondary

#6A968C

accent

#C1AD67

background

#F9F7F7

surface

#F1EDED

border

#CBC8C8

text

#0D0809

muted

#7E7B7B

Preview Lab

Preview with #663E47

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

Preview Lab → · Contrast checker → · Palette generator →