#66271B#66271B

#66271B is a dark, moderate red. Relative luminance 0.044; OKLCH L 36.2% C 0.094 H 32.6°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#66271B
RGB	rgb(102, 39, 27)
HSL	hsl(10, 58%, 25%)
HSV	hsv(10, 74%, 40%)
CMYK	cmyk(0%, 61.8%, 73.5%, 60%)
CIE-LAB	lab(24.81, 27.53, 22.00)
CIE-LCH	lch(24.81, 35.24, 38.63°)
OKLab	oklab(36.23% 0.0791 0.0506)
OKLCH	oklch(36.23% 0.094 32.6)
XYZ	xyz(6.4035, 4.3558, 1.5403)
Luminance	0.0435 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66271B #1B5A66

analogous

#661B34 #66271B #664C1B

triadic

#66271B #1B6627 #271B66

tetradic

#66271B #34661B #1B5A66 #4C1B66

square

#66271B #34661B #1B5A66 #4C1B66

split-complementary

#66271B #1B664C #1B3466

monochromatic

#180906 #36140E #66271B #963A28 #C74C35

Accessibility & contrast

On white

11.22

#66271B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#66271B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66271B

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66271B	#FFFFFF	#000000	##FFFFFF
##66271B	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38321A

Deuteranopia (green-blind)

#474019

Tritanopia (blue-blind)

#701A24

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #66271b;
/* rgb */ color: rgb(102, 39, 27);
/* oklch */ color: oklch(36.2% 0.094 32.6);

Tailwind

colors: {
  custom: {
    50: '#976457',
    500: '#66271b',
    950: '#000000',
  },
}

SCSS

$custom: #66271b;
$custom-light: #976457;
$custom-dark: #000000;

JSON

{
  "hex": "#66271b",
  "rgb": {
    "r": 102,
    "g": 39,
    "b": 27
  },
  "hsl": {
    "h": 9.6,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.36231,
    "c": 0.09388,
    "h": 32.6
  },
  "luminance": 0.04355
}

Semantic roles & 50–950 ramp

primary

#66271B

secondary

#418D9B

accent

#C9E146

background

#F9F6F5

surface

#F2EBE9

border

#CCC6C5

text

#0E0503

muted

#7E7A78

Preview Lab

Preview with #66271B

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

Preview Lab → · Contrast checker → · Palette generator →