#661D0F#661D0F

#661D0F is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.7% C 0.107 H 32.9°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#661D0F
RGB	rgb(102, 29, 15)
HSL	hsl(10, 74%, 23%)
HSV	hsv(10, 85%, 40%)
CMYK	cmyk(0%, 71.6%, 85.3%, 60%)
CIE-LAB	lab(22.79, 31.96, 27.03)
CIE-LCH	lch(22.79, 41.85, 40.22°)
OKLab	oklab(34.66% 0.0903 0.0584)
OKLCH	oklch(34.66% 0.108 32.9)
XYZ	xyz(6.0058, 3.7389, 0.8573)
Luminance	0.0374 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661D0F #0F5866

analogous

#660F2C #661D0F #66480F

triadic

#661D0F #0F661D #1D0F66

tetradic

#661D0F #2C660F #0F5866 #480F66

square

#661D0F #2C660F #0F5866 #480F66

split-complementary

#661D0F #0F6648 #0F2C66

monochromatic

#1B0804 #310E07 #661D0F #9B2C17 #D13B1F

Accessibility & contrast

On white

12.02

#661D0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#661D0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661D0F

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661D0F	#FFFFFF	#000000	##FFFFFF
##661D0F	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#322C0D

Deuteranopia (green-blind)

#443C0C

Tritanopia (blue-blind)

#71061A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661d0f;
/* rgb */ color: rgb(102, 29, 15);
/* oklch */ color: oklch(34.7% 0.107 32.9);

Tailwind

colors: {
  custom: {
    50: '#995e4e',
    500: '#661d0f',
    950: '#000000',
  },
}

SCSS

$custom: #661d0f;
$custom-light: #995e4e;
$custom-dark: #000000;

JSON

{
  "hex": "#661d0f",
  "rgb": {
    "r": 102,
    "g": 29,
    "b": 15
  },
  "hsl": {
    "h": 9.655,
    "s": 74.359,
    "l": 22.941
  },
  "oklch": {
    "l": 0.34657,
    "c": 0.1075,
    "h": 32.9
  },
  "luminance": 0.03738
}

Semantic roles & 50–950 ramp

primary

#661D0F

secondary

#328D9F

accent

#D3F137

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0401

muted

#7F7977

Preview Lab

Preview with #661D0F

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

Preview Lab → · Contrast checker → · Palette generator →