#663A2D#663A2D

#663A2D is a dark, moderate red. Relative luminance 0.060; OKLCH L 39.9% C 0.066 H 37.3°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#663A2D
RGB	rgb(102, 58, 45)
HSL	hsl(14, 39%, 29%)
HSV	hsv(14, 56%, 40%)
CMYK	cmyk(0%, 43.1%, 55.9%, 60%)
CIE-LAB	lab(29.52, 17.95, 16.40)
CIE-LCH	lch(29.52, 24.32, 42.42°)
OKLab	oklab(39.91% 0.0528 0.0402)
OKLCH	oklch(39.91% 0.066 37.3)
XYZ	xyz(7.4667, 6.0411, 3.2549)
Luminance	0.0604 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663A2D #2D5966

analogous

#662D3D #663A2D #66572D

triadic

#663A2D #2D663A #3A2D66

tetradic

#663A2D #3D662D #2D5966 #572D66

square

#663A2D #3D662D #2D5966 #572D66

split-complementary

#663A2D #2D6657 #2D3D66

monochromatic

#150C09 #3C221A #663A2D #905240 #B56D58

Accessibility & contrast

On white

9.51

#663A2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#663A2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663A2D

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663A2D	#FFFFFF	#000000	##FFFFFF
##663A2D	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#45402C

Deuteranopia (green-blind)

#50492C

Tritanopia (blue-blind)

#6F3337

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #663a2d;
/* rgb */ color: rgb(102, 58, 45);
/* oklch */ color: oklch(39.9% 0.066 37.3);

Tailwind

colors: {
  custom: {
    50: '#947066',
    500: '#663a2d',
    950: '#000000',
  },
}

SCSS

$custom: #663a2d;
$custom-light: #947066;
$custom-dark: #000000;

JSON

{
  "hex": "#663a2d",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 45
  },
  "hsl": {
    "h": 13.684,
    "s": 38.776,
    "l": 28.824
  },
  "oklch": {
    "l": 0.39914,
    "c": 0.06637,
    "h": 37.3
  },
  "luminance": 0.0604
}

Semantic roles & 50–950 ramp

primary

#663A2D

secondary

#578998

accent

#B4CF59

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0E0705

muted

#7E7A7A

Preview Lab

Preview with #663A2D

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

Preview Lab → · Contrast checker → · Palette generator →