#663D34#663D34

#663D34 is a dark, moderate red. Relative luminance 0.064; OKLCH L 40.7% C 0.060 H 33.1°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#663D34
RGB	rgb(102, 61, 52)
HSL	hsl(11, 32%, 30%)
HSV	hsv(11, 49%, 40%)
CMYK	cmyk(0%, 40.2%, 49%, 60%)
CIE-LAB	lab(30.43, 16.87, 13.14)
CIE-LCH	lch(30.43, 21.39, 37.90°)
OKLab	oklab(40.66% 0.0504 0.0329)
OKLCH	oklch(40.66% 0.06 33.1)
XYZ	xyz(7.7685, 6.4109, 4.0764)
Luminance	0.0641 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D34 #345D66

analogous

#663444 #663D34 #665634

triadic

#663D34 #34663D #3D3466

tetradic

#663D34 #446634 #345D66 #563466

square

#663D34 #446634 #345D66 #563466

split-complementary

#663D34 #346656 #344466

monochromatic

#150D0B #3D251F #663D34 #8F5549 #B07264

Accessibility & contrast

On white

9.20

#663D34 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#663D34 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D34

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D34	#FFFFFF	#000000	##FFFFFF
##663D34	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#474333

Deuteranopia (green-blind)

#504B33

Tritanopia (blue-blind)

#6E373B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #663d34;
/* rgb */ color: rgb(102, 61, 52);
/* oklch */ color: oklch(40.7% 0.060 33.1);

Tailwind

colors: {
  custom: {
    50: '#94736b',
    500: '#663d34',
    950: '#000000',
  },
}

SCSS

$custom: #663d34;
$custom-light: #94736b;
$custom-dark: #000000;

JSON

{
  "hex": "#663d34",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 52
  },
  "hsl": {
    "h": 10.8,
    "s": 32.468,
    "l": 30.196
  },
  "oklch": {
    "l": 0.4066,
    "c": 0.06019,
    "h": 33.1
  },
  "luminance": 0.0641
}

Semantic roles & 50–950 ramp

primary

#663D34

secondary

#5F8D97

accent

#B6C95F

background

#F9F7F6

surface

#F2EDEB

border

#CCC8C6

text

#0D0806

muted

#7E7B7A

Preview Lab

Preview with #663D34

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

Preview Lab → · Contrast checker → · Palette generator →