#66151C#66151C

#66151C is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.9% C 0.113 H 21.3°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#66151C
RGB	rgb(102, 21, 28)
HSL	hsl(355, 66%, 24%)
HSV	hsv(355, 79%, 40%)
CMYK	cmyk(0%, 79.4%, 72.5%, 60%)
CIE-LAB	lab(21.75, 35.91, 17.68)
CIE-LCH	lch(21.75, 40.03, 26.21°)
OKLab	oklab(33.94% 0.1057 0.0413)
OKLCH	oklch(33.94% 0.113 21.3)
XYZ	xyz(5.9579, 3.4459, 1.4498)
Luminance	0.0345 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66151C #15665F

analogous

#661545 #66151C #663715

triadic

#66151C #1C6615 #151C66

tetradic

#66151C #456615 #15665F #371566

square

#66151C #456615 #15665F #371566

split-complementary

#66151C #156637 #154566

monochromatic

#190507 #330B0E #66151C #991F2A #CC2A38

Accessibility & contrast

On white

12.43

#66151C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#66151C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66151C

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66151C	#FFFFFF	#000000	##FFFFFF
##66151C	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D291C

Deuteranopia (green-blind)

#413A19

Tritanopia (blue-blind)

#710018

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #66151c;
/* rgb */ color: rgb(102, 21, 28);
/* oklch */ color: oklch(33.9% 0.113 21.3);

Tailwind

colors: {
  custom: {
    50: '#985a58',
    500: '#66151c',
    950: '#000000',
  },
}

SCSS

$custom: #66151c;
$custom-light: #985a58;
$custom-dark: #000000;

JSON

{
  "hex": "#66151c",
  "rgb": {
    "r": 102,
    "g": 21,
    "b": 28
  },
  "hsl": {
    "h": 354.815,
    "s": 65.854,
    "l": 24.118
  },
  "oklch": {
    "l": 0.33936,
    "c": 0.11347,
    "h": 21.3
  },
  "luminance": 0.03445
}

Semantic roles & 50–950 ramp

primary

#66151C

secondary

#3A9D94

accent

#E9DA3F

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #66151C

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

Preview Lab → · Contrast checker → · Palette generator →