#663B18#663B18

#663B18 is a dark, moderate orange. Relative luminance 0.060; OKLCH L 39.8% C 0.078 H 56.9°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#663B18
RGB	rgb(102, 59, 24)
HSL	hsl(27, 62%, 25%)
HSV	hsv(27, 76%, 40%)
CMYK	cmyk(0%, 42.2%, 76.5%, 60%)
CIE-LAB	lab(29.46, 15.69, 28.93)
CIE-LCH	lch(29.46, 32.91, 61.52°)
OKLab	oklab(39.77% 0.0424 0.0649)
OKLCH	oklch(39.77% 0.078 56.9)
XYZ	xyz(7.2089, 6.0194, 1.6462)
Luminance	0.0602 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B18 #184366

analogous

#66181C #663B18 #666218

triadic

#663B18 #18663B #3B1866

tetradic

#663B18 #1C6618 #184366 #621866

square

#663B18 #1C6618 #184366 #621866

split-complementary

#663B18 #186662 #181C66

monochromatic

#190E06 #341E0C #663B18 #985824 #C9742F

Accessibility & contrast

On white

9.53

#663B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#663B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B18

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B18	#FFFFFF	#000000	##FFFFFF
##663B18	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484014

Deuteranopia (green-blind)

#524918

Tritanopia (blue-blind)

#703233

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #663b18;
/* rgb */ color: rgb(102, 59, 24);
/* oklch */ color: oklch(39.8% 0.078 56.9);

Tailwind

colors: {
  custom: {
    50: '#967157',
    500: '#663b18',
    950: '#000000',
  },
}

SCSS

$custom: #663b18;
$custom-light: #967157;
$custom-dark: #000000;

JSON

{
  "hex": "#663b18",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 24
  },
  "hsl": {
    "h": 26.923,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.39772,
    "c": 0.07756,
    "h": 56.9
  },
  "luminance": 0.06019
}

Semantic roles & 50–950 ramp

primary

#663B18

secondary

#3E729C

accent

#9CE543

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #663B18

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

Preview Lab → · Contrast checker → · Palette generator →