#661B13#661B13

#661B13 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.109 H 29.7°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#661B13
RGB	rgb(102, 27, 19)
HSL	hsl(6, 69%, 24%)
HSV	hsv(6, 81%, 40%)
CMYK	cmyk(0%, 73.5%, 81.4%, 60%)
CIE-LAB	lab(22.50, 33.01, 24.41)
CIE-LCH	lch(22.50, 41.06, 36.48°)
OKLab	oklab(34.46% 0.0944 0.0539)
OKLCH	oklch(34.46% 0.109 29.7)
XYZ	xyz(5.9896, 3.6566, 1.0064)
Luminance	0.0366 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B13 #135E66

analogous

#661334 #661B13 #664413

triadic

#661B13 #13661B #1B1366

tetradic

#661B13 #346613 #135E66 #441366

square

#661B13 #346613 #135E66 #441366

split-complementary

#661B13 #136644 #133466

monochromatic

#1A0705 #320D09 #661B13 #9A291D #CD3626

Accessibility & contrast

On white

12.13

#661B13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#661B13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B13

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B13	#FFFFFF	#000000	##FFFFFF
##661B13	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B11

Deuteranopia (green-blind)

#433C10

Tritanopia (blue-blind)

#71021A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b13;
/* rgb */ color: rgb(102, 27, 19);
/* oklch */ color: oklch(34.5% 0.109 29.7);

Tailwind

colors: {
  custom: {
    50: '#985d51',
    500: '#661b13',
    950: '#000000',
  },
}

SCSS

$custom: #661b13;
$custom-light: #985d51;
$custom-dark: #000000;

JSON

{
  "hex": "#661b13",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 19
  },
  "hsl": {
    "h": 5.783,
    "s": 68.595,
    "l": 23.725
  },
  "oklch": {
    "l": 0.34456,
    "c": 0.10872,
    "h": 29.7
  },
  "luminance": 0.03656
}

Semantic roles & 50–950 ramp

primary

#661B13

secondary

#37949D

accent

#DBEB3C

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #661B13

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

Preview Lab → · Contrast checker → · Palette generator →