#66423B#66423B

#66423B is a dark, muted red. Relative luminance 0.070; OKLCH L 41.8% C 0.052 H 31.5°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#66423B
RGB	rgb(102, 66, 59)
HSL	hsl(10, 27%, 32%)
HSV	hsv(10, 42%, 40%)
CMYK	cmyk(0%, 35.3%, 42.2%, 60%)
CIE-LAB	lab(31.89, 14.66, 10.66)
CIE-LCH	lch(31.89, 18.12, 36.02°)
OKLab	oklab(41.84% 0.0443 0.0271)
OKLCH	oklch(41.84% 0.052 31.5)
XYZ	xyz(8.2175, 7.0376, 5.0624)
Luminance	0.0704 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66423B #3B5F66

analogous

#663B4A #66423B #66583B

triadic

#66423B #3B6642 #423B66

tetradic

#66423B #4A663B #3B5F66 #583B66

square

#66423B #4A663B #3B5F66 #583B66

split-complementary

#66423B #3B6658 #3B4A66

monochromatic

#18100E #3F2925 #66423B #8D5B51 #AC796F

Accessibility & contrast

On white

8.72

#66423B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#66423B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66423B

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66423B	#FFFFFF	#000000	##FFFFFF
##66423B	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473A

Deuteranopia (green-blind)

#534E3B

Tritanopia (blue-blind)

#6E3D40

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #66423b;
/* rgb */ color: rgb(102, 66, 59);
/* oklch */ color: oklch(41.8% 0.052 31.5);

Tailwind

colors: {
  custom: {
    50: '#937671',
    500: '#66423b',
    950: '#000000',
  },
}

SCSS

$custom: #66423b;
$custom-light: #937671;
$custom-dark: #000000;

JSON

{
  "hex": "#66423b",
  "rgb": {
    "r": 102,
    "g": 66,
    "b": 59
  },
  "hsl": {
    "h": 9.767,
    "s": 26.708,
    "l": 31.569
  },
  "oklch": {
    "l": 0.41841,
    "c": 0.05192,
    "h": 31.5
  },
  "luminance": 0.07037
}

Semantic roles & 50–950 ramp

primary

#66423B

secondary

#678E96

accent

#B4C365

background

#F9F7F6

surface

#F1EDEC

border

#CBC8C7

text

#0D0807

muted

#7E7B7A

Preview Lab

Preview with #66423B

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

Preview Lab → · Contrast checker → · Palette generator →