#661D18#661D18

#661D18 is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.8% C 0.106 H 27.8°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#661D18
RGB	rgb(102, 29, 24)
HSL	hsl(4, 62%, 25%)
HSV	hsv(4, 76%, 40%)
CMYK	cmyk(0%, 71.6%, 76.5%, 60%)
CIE-LAB	lab(22.90, 32.36, 21.69)
CIE-LCH	lch(22.90, 38.95, 33.84°)
OKLab	oklab(34.77% 0.0935 0.0493)
OKLCH	oklch(34.77% 0.106 27.8)
XYZ	xyz(6.0844, 3.7703, 1.2713)
Luminance	0.0377 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661D18 #186166

analogous

#66183A #661D18 #664418

triadic

#661D18 #18661D #1D1866

tetradic

#661D18 #3A6618 #186166 #441866

square

#661D18 #3A6618 #186166 #441866

split-complementary

#661D18 #186644 #183A66

monochromatic

#190706 #340F0C #661D18 #982B24 #C9392F

Accessibility & contrast

On white

11.97

#661D18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#661D18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661D18

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661D18	#FFFFFF	#000000	##FFFFFF
##661D18	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312D17

Deuteranopia (green-blind)

#443C16

Tritanopia (blue-blind)

#71081C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661d18;
/* rgb */ color: rgb(102, 29, 24);
/* oklch */ color: oklch(34.8% 0.106 27.8);

Tailwind

colors: {
  custom: {
    50: '#985e55',
    500: '#661d18',
    950: '#000000',
  },
}

SCSS

$custom: #661d18;
$custom-light: #985e55;
$custom-dark: #000000;

JSON

{
  "hex": "#661d18",
  "rgb": {
    "r": 102,
    "g": 29,
    "b": 24
  },
  "hsl": {
    "h": 3.846,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.34773,
    "c": 0.1057,
    "h": 27.8
  },
  "luminance": 0.03769
}

Semantic roles & 50–950 ramp

primary

#661D18

secondary

#3E969C

accent

#DBE543

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #661D18

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

Preview Lab → · Contrast checker → · Palette generator →