#66180E#66180E

#66180E is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.1% C 0.113 H 30.8°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#66180E
RGB	rgb(102, 24, 14)
HSL	hsl(7, 76%, 23%)
HSV	hsv(7, 86%, 40%)
CMYK	cmyk(0%, 76.5%, 86.3%, 60%)
CIE-LAB	lab(21.98, 34.10, 26.70)
CIE-LCH	lch(21.98, 43.31, 38.06°)
OKLab	oklab(34.05% 0.0967 0.0576)
OKLCH	oklch(34.05% 0.113 30.8)
XYZ	xyz(5.8861, 3.5107, 0.7831)
Luminance	0.0351 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66180E #0E5C66

analogous

#660E30 #66180E #66440E

triadic

#66180E #0E6618 #180E66

tetradic

#66180E #30660E #0E5C66 #440E66

square

#66180E #30660E #0E5C66 #440E66

split-complementary

#66180E #0E6644 #0E3066

monochromatic

#1B0604 #300B07 #66180E #9C2515 #D2311D

Accessibility & contrast

On white

12.34

#66180E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#66180E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66180E

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66180E	#FFFFFF	#000000	##FFFFFF
##66180E	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2A0C

Deuteranopia (green-blind)

#433B0A

Tritanopia (blue-blind)

#710016

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #66180e;
/* rgb */ color: rgb(102, 24, 14);
/* oklch */ color: oklch(34.1% 0.113 30.8);

Tailwind

colors: {
  custom: {
    50: '#995b4d',
    500: '#66180e',
    950: '#000000',
  },
}

SCSS

$custom: #66180e;
$custom-light: #995b4d;
$custom-dark: #000000;

JSON

{
  "hex": "#66180e",
  "rgb": {
    "r": 102,
    "g": 24,
    "b": 14
  },
  "hsl": {
    "h": 6.818,
    "s": 75.862,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34051,
    "c": 0.11255,
    "h": 30.8
  },
  "luminance": 0.0351
}

Semantic roles & 50–950 ramp

primary

#66180E

secondary

#31939F

accent

#DDF235

background

#FAF5F4

surface

#F4E9E7

border

#CEC5C3

text

#0F0401

muted

#7F7977

Preview Lab

Preview with #66180E

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

Preview Lab → · Contrast checker → · Palette generator →