#663F2F#663F2F

#663F2F is a dark, moderate orange. Relative luminance 0.066; OKLCH L 40.9% C 0.061 H 43.0°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#663F2F
RGB	rgb(102, 63, 47)
HSL	hsl(17, 37%, 29%)
HSV	hsv(17, 54%, 40%)
CMYK	cmyk(0%, 38.2%, 53.9%, 60%)
CIE-LAB	lab(30.84, 15.09, 16.87)
CIE-LCH	lch(30.84, 22.63, 48.18°)
OKLab	oklab(40.95% 0.0444 0.0414)
OKLCH	oklch(40.95% 0.061 43)
XYZ	xyz(7.7705, 6.5857, 3.5507)
Luminance	0.0659 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663F2F #2F5666

analogous

#662F3B #663F2F #665B2F

triadic

#663F2F #2F663F #3F2F66

tetradic

#663F2F #3B662F #2F5666 #5B2F66

square

#663F2F #3B662F #2F5666 #5B2F66

split-complementary

#663F2F #2F665B #2F3B66

monochromatic

#150D0A #3C251C #663F2F #905942 #B4755C

Accessibility & contrast

On white

9.06

#663F2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#663F2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663F2F

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663F2F	#FFFFFF	#000000	##FFFFFF
##663F2F	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49442E

Deuteranopia (green-blind)

#524C2F

Tritanopia (blue-blind)

#6F383B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #663f2f;
/* rgb */ color: rgb(102, 63, 47);
/* oklch */ color: oklch(40.9% 0.061 43.0);

Tailwind

colors: {
  custom: {
    50: '#947467',
    500: '#663f2f',
    950: '#000000',
  },
}

SCSS

$custom: #663f2f;
$custom-light: #947467;
$custom-dark: #000000;

JSON

{
  "hex": "#663f2f",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 47
  },
  "hsl": {
    "h": 17.455,
    "s": 36.913,
    "l": 29.216
  },
  "oklch": {
    "l": 0.40949,
    "c": 0.06069,
    "h": 43
  },
  "luminance": 0.06585
}

Semantic roles & 50–950 ramp

primary

#663F2F

secondary

#598598

accent

#ACCD5B

background

#F9F7F6

surface

#F2EDEB

border

#CCC8C6

text

#0D0806

muted

#7E7B7A

Preview Lab

Preview with #663F2F

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

Preview Lab → · Contrast checker → · Palette generator →