#663B2E#663B2E

#663B2E is a dark, moderate red. Relative luminance 0.061; OKLCH L 40.1% C 0.065 H 37.6°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#663B2E
RGB	rgb(102, 59, 46)
HSL	hsl(14, 38%, 29%)
HSV	hsv(14, 55%, 40%)
CMYK	cmyk(0%, 42.2%, 54.9%, 60%)
CIE-LAB	lab(29.79, 17.44, 16.13)
CIE-LCH	lch(29.79, 23.75, 42.75°)
OKLab	oklab(40.13% 0.0514 0.0396)
OKLCH	oklch(40.13% 0.065 37.6)
XYZ	xyz(7.5371, 6.1507, 3.3745)
Luminance	0.0615 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B2E #2E5966

analogous

#662E3D #663B2E #66572E

triadic

#663B2E #2E663B #3B2E66

tetradic

#663B2E #3D662E #2E5966 #572E66

square

#663B2E #3D662E #2E5966 #572E66

split-complementary

#663B2E #2E6657 #2E3D66

monochromatic

#150C0A #3C231B #663B2E #905341 #B56F5A

Accessibility & contrast

On white

9.42

#663B2E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#663B2E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B2E

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B2E	#FFFFFF	#000000	##FFFFFF
##663B2E	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46412D

Deuteranopia (green-blind)

#504A2E

Tritanopia (blue-blind)

#6F3438

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #663b2e;
/* rgb */ color: rgb(102, 59, 46);
/* oklch */ color: oklch(40.1% 0.065 37.6);

Tailwind

colors: {
  custom: {
    50: '#947166',
    500: '#663b2e',
    950: '#000000',
  },
}

SCSS

$custom: #663b2e;
$custom-light: #947166;
$custom-dark: #000000;

JSON

{
  "hex": "#663b2e",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 46
  },
  "hsl": {
    "h": 13.929,
    "s": 37.838,
    "l": 29.02
  },
  "oklch": {
    "l": 0.4013,
    "c": 0.0649,
    "h": 37.6
  },
  "luminance": 0.0615
}

Semantic roles & 50–950 ramp

primary

#663B2E

secondary

#588998

accent

#B3CE5A

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #663B2E

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

Preview Lab → · Contrast checker → · Palette generator →