#66151B#66151B

#66151B is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.9% C 0.114 H 22.0°. Best body text is #FFFFFF at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#66151B
RGB	rgb(102, 21, 27)
HSL	hsl(356, 66%, 24%)
HSV	hsv(356, 79%, 40%)
CMYK	cmyk(0%, 79.4%, 73.5%, 60%)
CIE-LAB	lab(21.73, 35.86, 18.33)
CIE-LCH	lch(21.73, 40.27, 27.08°)
OKLab	oklab(33.92% 0.1053 0.0426)
OKLCH	oklch(33.92% 0.114 22)
XYZ	xyz(5.9461, 3.4411, 1.3878)
Luminance	0.0344 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66151B #156660

analogous

#661544 #66151B #663815

triadic

#66151B #1B6615 #151B66

tetradic

#66151B #446615 #156660 #381566

square

#66151B #446615 #156660 #381566

split-complementary

#66151B #156638 #154466

monochromatic

#190507 #330B0E #66151B #991F28 #CC2A36

Accessibility & contrast

On white

12.44

#66151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#66151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66151B

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66151B	#FFFFFF	#000000	##FFFFFF
##66151B	1.00	12.44	1.69	12.44
#FFFFFF	12.44	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D291B

Deuteranopia (green-blind)

#413A18

Tritanopia (blue-blind)

#710018

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #66151b;
/* rgb */ color: rgb(102, 21, 27);
/* oklch */ color: oklch(33.9% 0.114 22.0);

Tailwind

colors: {
  custom: {
    50: '#985a57',
    500: '#66151b',
    950: '#000000',
  },
}

SCSS

$custom: #66151b;
$custom-light: #985a57;
$custom-dark: #000000;

JSON

{
  "hex": "#66151b",
  "rgb": {
    "r": 102,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 355.556,
    "s": 65.854,
    "l": 24.118
  },
  "oklch": {
    "l": 0.33917,
    "c": 0.11356,
    "h": 22
  },
  "luminance": 0.0344
}

Semantic roles & 50–950 ramp

primary

#66151B

secondary

#3A9D96

accent

#E9DC3F

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #66151B

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

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