#663D35#663D35

#663D35 is a dark, muted red. Relative luminance 0.064; OKLCH L 40.7% C 0.060 H 31.7°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#663D35
RGB	rgb(102, 61, 53)
HSL	hsl(10, 32%, 30%)
HSV	hsv(10, 48%, 40%)
CMYK	cmyk(0%, 40.2%, 48%, 60%)
CIE-LAB	lab(30.45, 16.99, 12.53)
CIE-LCH	lch(30.45, 21.11, 36.40°)
OKLab	oklab(40.68% 0.0509 0.0315)
OKLCH	oklch(40.68% 0.06 31.7)
XYZ	xyz(7.7913, 6.4200, 4.1963)
Luminance	0.0642 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D35 #355E66

analogous

#663545 #663D35 #665535

triadic

#663D35 #35663D #3D3566

tetradic

#663D35 #456635 #355E66 #553566

square

#663D35 #456635 #355E66 #553566

split-complementary

#663D35 #356655 #354566

monochromatic

#150D0B #3E2520 #663D35 #8E554A #AF7266

Accessibility & contrast

On white

9.20

#663D35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#663D35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D35

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D35	#FFFFFF	#000000	##FFFFFF
##663D35	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)

#464334

Deuteranopia (green-blind)

#504B34

Tritanopia (blue-blind)

#6E373B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #663d35;
/* rgb */ color: rgb(102, 61, 53);
/* oklch */ color: oklch(40.7% 0.060 31.7);

Tailwind

colors: {
  custom: {
    50: '#94736c',
    500: '#663d35',
    950: '#000000',
  },
}

SCSS

$custom: #663d35;
$custom-light: #94736c;
$custom-dark: #000000;

JSON

{
  "hex": "#663d35",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 53
  },
  "hsl": {
    "h": 9.796,
    "s": 31.613,
    "l": 30.392
  },
  "oklch": {
    "l": 0.40684,
    "c": 0.05981,
    "h": 31.7
  },
  "luminance": 0.06419
}

Semantic roles & 50–950 ramp

primary

#663D35

secondary

#608E97

accent

#B7C860

background

#F9F7F6

surface

#F2EDEB

border

#CCC8C6

text

#0D0807

muted

#7E7B7A

Preview Lab

Preview with #663D35

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

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