#661B10#661B10

#661B10 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.4% C 0.109 H 31.3°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#661B10
RGB	rgb(102, 27, 16)
HSL	hsl(8, 73%, 23%)
HSV	hsv(8, 84%, 40%)
CMYK	cmyk(0%, 73.5%, 84.3%, 60%)
CIE-LAB	lab(22.47, 32.89, 26.15)
CIE-LCH	lch(22.47, 42.02, 38.49°)
OKLab	oklab(34.42% 0.0934 0.0568)
OKLCH	oklch(34.42% 0.109 31.3)
XYZ	xyz(5.9656, 3.6470, 0.8799)
Luminance	0.0365 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B10 #105B66

analogous

#661030 #661B10 #664610

triadic

#661B10 #10661B #1B1066

tetradic

#661B10 #306610 #105B66 #461066

square

#661B10 #306610 #105B66 #461066

split-complementary

#661B10 #106646 #103066

monochromatic

#1A0704 #310D08 #661B10 #9B2918 #D03721

Accessibility & contrast

On white

12.14

#661B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#661B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B10

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B10	#FFFFFF	#000000	##FFFFFF
##661B10	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B0E

Deuteranopia (green-blind)

#443C0D

Tritanopia (blue-blind)

#710219

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b10;
/* rgb */ color: rgb(102, 27, 16);
/* oklch */ color: oklch(34.4% 0.109 31.3);

Tailwind

colors: {
  custom: {
    50: '#995d4f',
    500: '#661b10',
    950: '#000000',
  },
}

SCSS

$custom: #661b10;
$custom-light: #995d4f;
$custom-dark: #000000;

JSON

{
  "hex": "#661b10",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 7.674,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.3442,
    "c": 0.10929,
    "h": 31.3
  },
  "luminance": 0.03646
}

Semantic roles & 50–950 ramp

primary

#661B10

secondary

#33919E

accent

#D8F038

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #661B10

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

Preview Lab → · Contrast checker → · Palette generator →