#66373D#66373D

#66373D is a dark, moderate red. Relative luminance 0.059; OKLCH L 39.8% C 0.067 H 12.4°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#66373D
RGB	rgb(102, 55, 61)
HSL	hsl(352, 30%, 31%)
HSV	hsv(352, 46%, 40%)
CMYK	cmyk(0%, 46.1%, 40.2%, 60%)
CIE-LAB	lab(29.15, 21.65, 5.52)
CIE-LCH	lch(29.15, 22.34, 14.31°)
OKLab	oklab(39.75% 0.0656 0.0145)
OKLCH	oklch(39.75% 0.067 12.4)
XYZ	xyz(7.6883, 5.8947, 5.1469)
Luminance	0.0589 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66373D #376660

analogous

#663754 #66373D #664837

triadic

#66373D #3D6637 #373D66

tetradic

#66373D #546637 #376660 #483766

square

#66373D #546637 #376660 #483766

split-complementary

#66373D #376648 #375466

monochromatic

#160C0D #3E2225 #66373D #8E4C55 #AE6972

Accessibility & contrast

On white

9.64

#66373D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#66373D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66373D

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66373D	#FFFFFF	#000000	##FFFFFF
##66373D	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#403F3D

Deuteranopia (green-blind)

#4B483C

Tritanopia (blue-blind)

#6E3239

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #66373d;
/* rgb */ color: rgb(102, 55, 61);
/* oklch */ color: oklch(39.8% 0.067 12.4);

Tailwind

colors: {
  custom: {
    50: '#946f72',
    500: '#66373d',
    950: '#000000',
  },
}

SCSS

$custom: #66373d;
$custom-light: #946f72;
$custom-dark: #000000;

JSON

{
  "hex": "#66373d",
  "rgb": {
    "r": 102,
    "g": 55,
    "b": 61
  },
  "hsl": {
    "h": 352.34,
    "s": 29.936,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39753,
    "c": 0.06718,
    "h": 12.4
  },
  "luminance": 0.05894
}

Semantic roles & 50–950 ramp

primary

#66373D

secondary

#629690

accent

#C6B962

background

#F9F6F6

surface

#F2ECEC

border

#CCC7C7

text

#0D0708

muted

#7E7A7B

Preview Lab

Preview with #66373D

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

Preview Lab → · Contrast checker → · Palette generator →