#66231D#66231D

#66231D is a dark, moderate red. Relative luminance 0.041; OKLCH L 35.7% C 0.098 H 28.1°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#66231D
RGB	rgb(102, 35, 29)
HSL	hsl(5, 56%, 26%)
HSV	hsv(5, 72%, 40%)
CMYK	cmyk(0%, 65.7%, 71.6%, 60%)
CIE-LAB	lab(24.05, 29.74, 19.82)
CIE-LCH	lch(24.05, 35.74, 33.68°)
OKLab	oklab(35.67% 0.0864 0.0462)
OKLCH	oklch(35.67% 0.098 28.1)
XYZ	xyz(6.3029, 4.1164, 1.6248)
Luminance	0.0412 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66231D #1D6066

analogous

#661D3B #66231D #66471D

triadic

#66231D #1D6623 #231D66

tetradic

#66231D #3B661D #1D6066 #471D66

square

#66231D #3B661D #1D6066 #471D66

split-complementary

#66231D #1D6647 #1D3B66

monochromatic

#180807 #36130F #66231D #96332B #C54438

Accessibility & contrast

On white

11.52

#66231D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#66231D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66231D

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66231D	#FFFFFF	#000000	##FFFFFF
##66231D	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35301C

Deuteranopia (green-blind)

#463F1B

Tritanopia (blue-blind)

#701422

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #66231d;
/* rgb */ color: rgb(102, 35, 29);
/* oklch */ color: oklch(35.7% 0.098 28.1);

Tailwind

colors: {
  custom: {
    50: '#976159',
    500: '#66231d',
    950: '#000000',
  },
}

SCSS

$custom: #66231d;
$custom-light: #976159;
$custom-dark: #000000;

JSON

{
  "hex": "#66231d",
  "rgb": {
    "r": 102,
    "g": 35,
    "b": 29
  },
  "hsl": {
    "h": 4.932,
    "s": 55.725,
    "l": 25.686
  },
  "oklch": {
    "l": 0.35666,
    "c": 0.09798,
    "h": 28.1
  },
  "luminance": 0.04116
}

Semantic roles & 50–950 ramp

primary

#66231D

secondary

#44949B

accent

#D3DF49

background

#F9F5F5

surface

#F2EAE9

border

#CCC6C5

text

#0E0503

muted

#7E7978

Preview Lab

Preview with #66231D

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

Preview Lab → · Contrast checker → · Palette generator →