#66101E#66101E

#66101E is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.5% C 0.118 H 18.2°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#66101E
RGB	rgb(102, 16, 30)
HSL	hsl(350, 73%, 23%)
HSV	hsv(350, 84%, 40%)
CMYK	cmyk(0%, 84.3%, 70.6%, 60%)
CIE-LAB	lab(21.17, 37.76, 15.59)
CIE-LCH	lch(21.17, 40.85, 22.43°)
OKLab	oklab(33.52% 0.1121 0.0369)
OKLCH	oklch(33.52% 0.118 18.2)
XYZ	xyz(5.8998, 3.2900, 1.5524)
Luminance	0.0329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66101E #106658

analogous

#661049 #66101E #662D10

triadic

#66101E #1E6610 #101E66

tetradic

#66101E #496610 #106658 #2D1066

square

#66101E #496610 #106658 #2D1066

split-complementary

#66101E #10662D #104966

monochromatic

#1A0408 #31080E #66101E #9B182E #D0213D

Accessibility & contrast

On white

12.67

#66101E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#66101E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66101E

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66101E	#FFFFFF	#000000	##FFFFFF
##66101E	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A271E

Deuteranopia (green-blind)

#3F391B

Tritanopia (blue-blind)

#710016

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #66101e;
/* rgb */ color: rgb(102, 16, 30);
/* oklch */ color: oklch(33.5% 0.118 18.2);

Tailwind

colors: {
  custom: {
    50: '#985859',
    500: '#66101e',
    950: '#000000',
  },
}

SCSS

$custom: #66101e;
$custom-light: #985859;
$custom-dark: #000000;

JSON

{
  "hex": "#66101e",
  "rgb": {
    "r": 102,
    "g": 16,
    "b": 30
  },
  "hsl": {
    "h": 350.233,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33519,
    "c": 0.118,
    "h": 18.2
  },
  "luminance": 0.03289
}

Semantic roles & 50–950 ramp

primary

#66101E

secondary

#339E8D

accent

#F0D238

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #66101E

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

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