#661D1F#661D1F

#661D1F is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.9% C 0.105 H 22.9°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#661D1F
RGB	rgb(102, 29, 31)
HSL	hsl(358, 56%, 26%)
HSV	hsv(358, 72%, 40%)
CMYK	cmyk(0%, 71.6%, 69.6%, 60%)
CIE-LAB	lab(23.01, 32.77, 17.22)
CIE-LCH	lch(23.01, 37.02, 27.72°)
OKLab	oklab(34.89% 0.0964 0.0407)
OKLCH	oklch(34.89% 0.105 22.9)
XYZ	xyz(6.1668, 3.8033, 1.7054)
Luminance	0.0380 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661D1F #1D6664

analogous

#661D43 #661D1F #663F1D

triadic

#661D1F #1F661D #1D1F66

tetradic

#661D1F #43661D #1D6664 #3F1D66

square

#661D1F #43661D #1D6664 #3F1D66

split-complementary

#661D1F #1D663F #1D4366

monochromatic

#180707 #360F11 #661D1F #962B2D #C5383C

Accessibility & contrast

On white

11.93

#661D1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#661D1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661D1F

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661D1F	#FFFFFF	#000000	##FFFFFF
##661D1F	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312D1E

Deuteranopia (green-blind)

#433D1D

Tritanopia (blue-blind)

#700A1E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #661d1f;
/* rgb */ color: rgb(102, 29, 31);
/* oklch */ color: oklch(34.9% 0.105 22.9);

Tailwind

colors: {
  custom: {
    50: '#975e5a',
    500: '#661d1f',
    950: '#000000',
  },
}

SCSS

$custom: #661d1f;
$custom-light: #975e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#661d1f",
  "rgb": {
    "r": 102,
    "g": 29,
    "b": 31
  },
  "hsl": {
    "h": 358.356,
    "s": 55.725,
    "l": 25.686
  },
  "oklch": {
    "l": 0.34894,
    "c": 0.10463,
    "h": 22.9
  },
  "luminance": 0.03802
}

Semantic roles & 50–950 ramp

primary

#661D1F

secondary

#449B98

accent

#DFDB49

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0503

muted

#7E7978

Preview Lab

Preview with #661D1F

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

Preview Lab → · Contrast checker → · Palette generator →