#663D43#663D43

#663D43 is a dark, muted red. Relative luminance 0.066; OKLCH L 41.1% C 0.058 H 10.4°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#663D43
RGB	rgb(102, 61, 67)
HSL	hsl(351, 25%, 32%)
HSV	hsv(351, 40%, 40%)
CMYK	cmyk(0%, 40.2%, 34.3%, 60%)
CIE-LAB	lab(30.80, 18.85, 3.97)
CIE-LCH	lch(30.80, 19.27, 11.89°)
OKLab	oklab(41.07% 0.0572 0.0105)
OKLCH	oklch(41.07% 0.058 10.4)
XYZ	xyz(8.1616, 6.5681, 6.1470)
Luminance	0.0657 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D43 #3D6660

analogous

#663D58 #663D43 #664C3D

triadic

#663D43 #43663D #3D4366

tetradic

#663D43 #58663D #3D6660 #4C3D66

square

#663D43 #58663D #3D6660 #4C3D66

split-complementary

#663D43 #3D664C #3D5866

monochromatic

#190F11 #40262A #663D43 #8C545C #AB727B

Accessibility & contrast

On white

9.08

#663D43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#663D43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D43

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D43	#FFFFFF	#000000	##FFFFFF
##663D43	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444443

Deuteranopia (green-blind)

#4E4B42

Tritanopia (blue-blind)

#6D393F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #663d43;
/* rgb */ color: rgb(102, 61, 67);
/* oklch */ color: oklch(41.1% 0.058 10.4);

Tailwind

colors: {
  custom: {
    50: '#937377',
    500: '#663d43',
    950: '#000000',
  },
}

SCSS

$custom: #663d43;
$custom-light: #937377;
$custom-dark: #000000;

JSON

{
  "hex": "#663d43",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 67
  },
  "hsl": {
    "h": 351.22,
    "s": 25.153,
    "l": 31.961
  },
  "oklch": {
    "l": 0.41073,
    "c": 0.05813,
    "h": 10.4
  },
  "luminance": 0.06568
}

Semantic roles & 50–950 ramp

primary

#663D43

secondary

#69968F

accent

#C2B466

background

#F9F7F7

surface

#F1EDED

border

#CBC8C8

text

#0D0808

muted

#7E7B7B

Preview Lab

Preview with #663D43

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

Preview Lab → · Contrast checker → · Palette generator →