#66181A#66181A

#66181A is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.2% C 0.111 H 24.0°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#66181A
RGB	rgb(102, 24, 26)
HSL	hsl(358, 62%, 25%)
HSV	hsv(358, 76%, 40%)
CMYK	cmyk(0%, 76.5%, 74.5%, 60%)
CIE-LAB	lab(22.14, 34.63, 19.49)
CIE-LCH	lch(22.14, 39.74, 29.38°)
OKLab	oklab(34.22% 0.1011 0.0449)
OKLCH	oklch(34.22% 0.111 24)
XYZ	xyz(5.9932, 3.5535, 1.3474)
Luminance	0.0355 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66181A #186664

analogous

#661841 #66181A #663D18

triadic

#66181A #1A6618 #181A66

tetradic

#66181A #416618 #186664 #3D1866

square

#66181A #416618 #186664 #3D1866

split-complementary

#66181A #18663D #184166

monochromatic

#190606 #340C0D #66181A #982427 #C92F33

Accessibility & contrast

On white

12.28

#66181A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#66181A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66181A

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66181A	#FFFFFF	#000000	##FFFFFF
##66181A	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2A19

Deuteranopia (green-blind)

#423B17

Tritanopia (blue-blind)

#71001A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #66181a;
/* rgb */ color: rgb(102, 24, 26);
/* oklch */ color: oklch(34.2% 0.111 24.0);

Tailwind

colors: {
  custom: {
    50: '#985b56',
    500: '#66181a',
    950: '#000000',
  },
}

SCSS

$custom: #66181a;
$custom-light: #985b56;
$custom-dark: #000000;

JSON

{
  "hex": "#66181a",
  "rgb": {
    "r": 102,
    "g": 24,
    "b": 26
  },
  "hsl": {
    "h": 358.462,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.34215,
    "c": 0.11066,
    "h": 24
  },
  "luminance": 0.03553
}

Semantic roles & 50–950 ramp

primary

#66181A

secondary

#3E9C9A

accent

#E5E143

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #66181A

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

Preview Lab → · Contrast checker → · Palette generator →