#66131B#66131B

#66131B is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.7% C 0.115 H 21.3°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#66131B
RGB	rgb(102, 19, 27)
HSL	hsl(354, 69%, 24%)
HSV	hsv(354, 81%, 40%)
CMYK	cmyk(0%, 81.4%, 73.5%, 60%)
CIE-LAB	lab(21.47, 36.58, 18.02)
CIE-LCH	lch(21.47, 40.78, 26.22°)
OKLab	oklab(33.72% 0.1076 0.0419)
OKLCH	oklch(33.72% 0.115 21.3)
XYZ	xyz(5.9109, 3.3706, 1.3760)
Luminance	0.0337 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66131B #13665E

analogous

#661344 #66131B #663413

triadic

#66131B #1B6613 #131B66

tetradic

#66131B #446613 #13665E #341366

square

#66131B #446613 #13665E #341366

split-complementary

#66131B #136634 #134466

monochromatic

#1A0507 #32090D #66131B #9A1D29 #CD2636

Accessibility & contrast

On white

12.54

#66131B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#66131B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66131B

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66131B	#FFFFFF	#000000	##FFFFFF
##66131B	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C281B

Deuteranopia (green-blind)

#403A18

Tritanopia (blue-blind)

#710017

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #66131b;
/* rgb */ color: rgb(102, 19, 27);
/* oklch */ color: oklch(33.7% 0.115 21.3);

Tailwind

colors: {
  custom: {
    50: '#985957',
    500: '#66131b',
    950: '#000000',
  },
}

SCSS

$custom: #66131b;
$custom-light: #985957;
$custom-dark: #000000;

JSON

{
  "hex": "#66131b",
  "rgb": {
    "r": 102,
    "g": 19,
    "b": 27
  },
  "hsl": {
    "h": 354.217,
    "s": 68.595,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33724,
    "c": 0.11545,
    "h": 21.3
  },
  "luminance": 0.0337
}

Semantic roles & 50–950 ramp

primary

#66131B

secondary

#379D94

accent

#EBDB3C

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #66131B

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

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