#661B20#661B20

#661B20 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.7% C 0.107 H 21.1°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#661B20
RGB	rgb(102, 27, 32)
HSL	hsl(356, 58%, 25%)
HSV	hsv(356, 74%, 40%)
CMYK	cmyk(0%, 73.5%, 68.6%, 60%)
CIE-LAB	lab(22.70, 33.73, 16.16)
CIE-LCH	lch(22.70, 37.40, 25.60°)
OKLab	oklab(34.67% 0.0997 0.0385)
OKLCH	oklch(34.67% 0.107 21.1)
XYZ	xyz(6.1328, 3.7138, 1.7601)
Luminance	0.0371 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B20 #1B6661

analogous

#661B45 #661B20 #663B1B

triadic

#661B20 #20661B #1B2066

tetradic

#661B20 #45661B #1B6661 #3B1B66

square

#661B20 #45661B #1B6661 #3B1B66

split-complementary

#661B20 #1B663B #1B4566

monochromatic

#180608 #360E11 #661B20 #96282F #C7353E

Accessibility & contrast

On white

12.05

#661B20 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#661B20 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B20

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B20	#FFFFFF	#000000	##FFFFFF
##661B20	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2C20

Deuteranopia (green-blind)

#423C1E

Tritanopia (blue-blind)

#70061D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b20;
/* rgb */ color: rgb(102, 27, 32);
/* oklch */ color: oklch(34.7% 0.107 21.1);

Tailwind

colors: {
  custom: {
    50: '#975d5b',
    500: '#661b20',
    950: '#000000',
  },
}

SCSS

$custom: #661b20;
$custom-light: #975d5b;
$custom-dark: #000000;

JSON

{
  "hex": "#661b20",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 32
  },
  "hsl": {
    "h": 356,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.3467,
    "c": 0.10682,
    "h": 21.1
  },
  "luminance": 0.03713
}

Semantic roles & 50–950 ramp

primary

#661B20

secondary

#419B95

accent

#E1D746

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0404

muted

#7E7979

Preview Lab

Preview with #661B20

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

Preview Lab → · Contrast checker → · Palette generator →