#660F11#660F11

#660F11 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.2% C 0.120 H 25.8°. Best body text is #FFFFFF at 12.79:1 contrast (WCAG AA passes).

Color values

HEX	#660F11
RGB	rgb(102, 15, 17)
HSL	hsl(359, 74%, 23%)
HSV	hsv(359, 85%, 40%)
CMYK	cmyk(0%, 85.3%, 83.3%, 60%)
CIE-LAB	lab(20.86, 37.44, 23.85)
CIE-LCH	lch(20.86, 44.39, 32.50°)
OKLab	oklab(33.22% 0.1079 0.0522)
OKLCH	oklch(33.22% 0.12 25.8)
XYZ	xyz(5.7522, 3.2078, 0.8465)
Luminance	0.0321 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#660F11 #0F6664

analogous

#660F3C #660F11 #66390F

triadic

#660F11 #11660F #0F1166

tetradic

#660F11 #3C660F #0F6664 #390F66

square

#660F11 #3C660F #0F6664 #390F66

split-complementary

#660F11 #0F6639 #0F3C66

monochromatic

#1B0404 #310708 #660F11 #9B171A #D11F23

Accessibility & contrast

On white

12.79

#660F11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#660F11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #660F11

12.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##660F11	#FFFFFF	#000000	##FFFFFF
##660F11	1.00	12.79	1.64	12.79
#FFFFFF	12.79	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2610

Deuteranopia (green-blind)

#40390D

Tritanopia (blue-blind)

#710011

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #660f11;
/* rgb */ color: rgb(102, 15, 17);
/* oklch */ color: oklch(33.2% 0.120 25.8);

Tailwind

colors: {
  custom: {
    50: '#99574f',
    500: '#660f11',
    950: '#000000',
  },
}

SCSS

$custom: #660f11;
$custom-light: #99574f;
$custom-dark: #000000;

JSON

{
  "hex": "#660f11",
  "rgb": {
    "r": 102,
    "g": 15,
    "b": 17
  },
  "hsl": {
    "h": 358.621,
    "s": 74.359,
    "l": 22.941
  },
  "oklch": {
    "l": 0.33223,
    "c": 0.11982,
    "h": 25.8
  },
  "luminance": 0.03207
}

Semantic roles & 50–950 ramp

primary

#660F11

secondary

#329F9C

accent

#F1ED37

background

#FAF5F4

surface

#F4E9E7

border

#CEC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #660F11

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

Preview Lab → · Contrast checker → · Palette generator →