#66171B#66171B

#66171B is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.1% C 0.112 H 22.8°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#66171B
RGB	rgb(102, 23, 27)
HSL	hsl(357, 63%, 25%)
HSV	hsv(357, 77%, 40%)
CMYK	cmyk(0%, 77.5%, 73.5%, 60%)
CIE-LAB	lab(22.01, 35.09, 18.67)
CIE-LCH	lch(22.01, 39.74, 28.02°)
OKLab	oklab(34.12% 0.1028 0.0433)
OKLCH	oklch(34.12% 0.112 22.8)
XYZ	xyz(5.9844, 3.5176, 1.4006)
Luminance	0.0352 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66171B #176662

analogous

#661743 #66171B #663B17

triadic

#66171B #1B6617 #171B66

tetradic

#66171B #436617 #176662 #3B1766

square

#66171B #436617 #176662 #3B1766

split-complementary

#66171B #17663B #174366

monochromatic

#190607 #340C0E #66171B #982228 #CA2E35

Accessibility & contrast

On white

12.33

#66171B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#66171B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66171B

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66171B	#FFFFFF	#000000	##FFFFFF
##66171B	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2A1A

Deuteranopia (green-blind)

#423B18

Tritanopia (blue-blind)

#710019

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #66171b;
/* rgb */ color: rgb(102, 23, 27);
/* oklch */ color: oklch(34.1% 0.112 22.8);

Tailwind

colors: {
  custom: {
    50: '#985b57',
    500: '#66171b',
    950: '#000000',
  },
}

SCSS

$custom: #66171b;
$custom-light: #985b57;
$custom-dark: #000000;

JSON

{
  "hex": "#66171b",
  "rgb": {
    "r": 102,
    "g": 23,
    "b": 27
  },
  "hsl": {
    "h": 356.962,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.34124,
    "c": 0.11157,
    "h": 22.8
  },
  "luminance": 0.03517
}

Semantic roles & 50–950 ramp

primary

#66171B

secondary

#3C9C98

accent

#E6DE42

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #66171B

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

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