#66372C#66372C

#66372C is a dark, moderate red. Relative luminance 0.057; OKLCH L 39.3% C 0.070 H 34.1°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#66372C
RGB	rgb(102, 55, 44)
HSL	hsl(11, 40%, 29%)
HSV	hsv(11, 57%, 40%)
CMYK	cmyk(0%, 46.1%, 56.9%, 60%)
CIE-LAB	lab(28.75, 19.67, 16.04)
CIE-LCH	lch(28.75, 25.38, 39.19°)
OKLab	oklab(39.32% 0.058 0.0393)
OKLCH	oklch(39.32% 0.07 34.1)
XYZ	xyz(7.3008, 5.7397, 3.1058)
Luminance	0.0574 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66372C #2C5B66

analogous

#662C3E #66372C #66542C

triadic

#66372C #2C6637 #372C66

tetradic

#66372C #3E662C #2C5B66 #542C66

square

#66372C #3E662C #2C5B66 #542C66

split-complementary

#66372C #2C6654 #2C3E66

monochromatic

#150C09 #3B201A #66372C #914E3E #B66856

Accessibility & contrast

On white

9.78

#66372C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#66372C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66372C

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66372C	#FFFFFF	#000000	##FFFFFF
##66372C	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#423E2B

Deuteranopia (green-blind)

#4E482B

Tritanopia (blue-blind)

#6F2F34

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #66372c;
/* rgb */ color: rgb(102, 55, 44);
/* oklch */ color: oklch(39.3% 0.070 34.1);

Tailwind

colors: {
  custom: {
    50: '#956e65',
    500: '#66372c',
    950: '#000000',
  },
}

SCSS

$custom: #66372c;
$custom-light: #956e65;
$custom-dark: #000000;

JSON

{
  "hex": "#66372c",
  "rgb": {
    "r": 102,
    "g": 55,
    "b": 44
  },
  "hsl": {
    "h": 11.379,
    "s": 39.726,
    "l": 28.627
  },
  "oklch": {
    "l": 0.39317,
    "c": 0.07001,
    "h": 34.1
  },
  "luminance": 0.05739
}

Semantic roles & 50–950 ramp

primary

#66372C

secondary

#568B98

accent

#B9D058

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0E0705

muted

#7E7A7A

Preview Lab

Preview with #66372C

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

Preview Lab → · Contrast checker → · Palette generator →