#661C10#661C10

#661C10 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.108 H 31.9°. Best body text is #FFFFFF at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#661C10
RGB	rgb(102, 28, 16)
HSL	hsl(8, 73%, 23%)
HSV	hsv(8, 84%, 40%)
CMYK	cmyk(0%, 72.5%, 84.3%, 60%)
CIE-LAB	lab(22.63, 32.45, 26.32)
CIE-LCH	lch(22.63, 41.78, 39.05°)
OKLab	oklab(34.54% 0.092 0.0572)
OKLCH	oklch(34.54% 0.108 31.9)
XYZ	xyz(5.9890, 3.6936, 0.8877)
Luminance	0.0369 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661C10 #105A66

analogous

#66102F #661C10 #664710

triadic

#661C10 #10661C #1C1066

tetradic

#661C10 #2F6610 #105A66 #471066

square

#661C10 #2F6610 #105A66 #471066

split-complementary

#661C10 #106647 #102F66

monochromatic

#1A0704 #310D08 #661C10 #9B2B18 #D03921

Accessibility & contrast

On white

12.08

#661C10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#661C10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661C10

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661C10	#FFFFFF	#000000	##FFFFFF
##661C10	1.00	12.08	1.74	12.08
#FFFFFF	12.08	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#322C0E

Deuteranopia (green-blind)

#443C0D

Tritanopia (blue-blind)

#71041A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661c10;
/* rgb */ color: rgb(102, 28, 16);
/* oklch */ color: oklch(34.5% 0.108 31.9);

Tailwind

colors: {
  custom: {
    50: '#995d4f',
    500: '#661c10',
    950: '#000000',
  },
}

SCSS

$custom: #661c10;
$custom-light: #995d4f;
$custom-dark: #000000;

JSON

{
  "hex": "#661c10",
  "rgb": {
    "r": 102,
    "g": 28,
    "b": 16
  },
  "hsl": {
    "h": 8.372,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.34543,
    "c": 0.1083,
    "h": 31.9
  },
  "luminance": 0.03693
}

Semantic roles & 50–950 ramp

primary

#661C10

secondary

#338F9E

accent

#D6F038

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #661C10

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

Preview Lab → · Contrast checker → · Palette generator →