#661B0F#661B0F

#661B0F is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.4% C 0.109 H 31.8°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#661B0F
RGB	rgb(102, 27, 15)
HSL	hsl(8, 74%, 23%)
HSV	hsv(8, 85%, 40%)
CMYK	cmyk(0%, 73.5%, 85.3%, 60%)
CIE-LAB	lab(22.46, 32.86, 26.68)
CIE-LCH	lch(22.46, 42.33, 39.08°)
OKLab	oklab(34.41% 0.093 0.0577)
OKLCH	oklch(34.41% 0.109 31.8)
XYZ	xyz(5.9583, 3.6440, 0.8415)
Luminance	0.0364 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B0F #0F5A66

analogous

#660F2E #661B0F #66460F

triadic

#661B0F #0F661B #1B0F66

tetradic

#661B0F #2E660F #0F5A66 #460F66

square

#661B0F #2E660F #0F5A66 #460F66

split-complementary

#661B0F #0F6646 #0F2E66

monochromatic

#1B0704 #310D07 #661B0F #9B2917 #D1371F

Accessibility & contrast

On white

12.15

#661B0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#661B0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B0F

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B0F	#FFFFFF	#000000	##FFFFFF
##661B0F	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B0D

Deuteranopia (green-blind)

#443C0C

Tritanopia (blue-blind)

#710219

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #661b0f;
/* rgb */ color: rgb(102, 27, 15);
/* oklch */ color: oklch(34.4% 0.109 31.8);

Tailwind

colors: {
  custom: {
    50: '#995d4e',
    500: '#661b0f',
    950: '#000000',
  },
}

SCSS

$custom: #661b0f;
$custom-light: #995d4e;
$custom-dark: #000000;

JSON

{
  "hex": "#661b0f",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 15
  },
  "hsl": {
    "h": 8.276,
    "s": 74.359,
    "l": 22.941
  },
  "oklch": {
    "l": 0.34409,
    "c": 0.10949,
    "h": 31.8
  },
  "luminance": 0.03643
}

Semantic roles & 50–950 ramp

primary

#661B0F

secondary

#32909F

accent

#D7F137

background

#FAF5F4

surface

#F4E9E7

border

#CEC5C3

text

#0F0401

muted

#7F7977

Preview Lab

Preview with #661B0F

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

Preview Lab → · Contrast checker → · Palette generator →