#663B1D#663B1D

#663B1D is a dark, moderate orange. Relative luminance 0.060; OKLCH L 39.8% C 0.075 H 53.7°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#663B1D
RGB	rgb(102, 59, 29)
HSL	hsl(25, 56%, 26%)
HSV	hsv(25, 72%, 40%)
CMYK	cmyk(0%, 42.2%, 71.6%, 60%)
CIE-LAB	lab(29.52, 16.00, 26.19)
CIE-LCH	lch(29.52, 30.69, 58.57°)
OKLab	oklab(39.83% 0.0442 0.0601)
OKLCH	oklch(39.83% 0.075 53.7)
XYZ	xyz(7.2658, 6.0421, 1.9458)
Luminance	0.0604 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B1D #1D4866

analogous

#661D23 #663B1D #665F1D

triadic

#663B1D #1D663B #3B1D66

tetradic

#663B1D #23661D #1D4866 #5F1D66

square

#663B1D #23661D #1D4866 #5F1D66

split-complementary

#663B1D #1D665F #1D2366

monochromatic

#180E07 #361F0F #663B1D #96572B #C57238

Accessibility & contrast

On white

9.51

#663B1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#663B1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B1D

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B1D	#FFFFFF	#000000	##FFFFFF
##663B1D	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)

#47401A

Deuteranopia (green-blind)

#52491D

Tritanopia (blue-blind)

#703234

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #663b1d;
/* rgb */ color: rgb(102, 59, 29);
/* oklch */ color: oklch(39.8% 0.075 53.7);

Tailwind

colors: {
  custom: {
    50: '#95715a',
    500: '#663b1d',
    950: '#000000',
  },
}

SCSS

$custom: #663b1d;
$custom-light: #95715a;
$custom-dark: #000000;

JSON

{
  "hex": "#663b1d",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 29
  },
  "hsl": {
    "h": 24.658,
    "s": 55.725,
    "l": 25.686
  },
  "oklch": {
    "l": 0.39834,
    "c": 0.07459,
    "h": 53.7
  },
  "luminance": 0.06041
}

Semantic roles & 50–950 ramp

primary

#663B1D

secondary

#44779B

accent

#A1DF49

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0704

muted

#7E7A79

Preview Lab

Preview with #663B1D

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

Preview Lab → · Contrast checker → · Palette generator →