#663F0F#663F0F

#663F0F is a dark, moderate orange. Relative luminance 0.064; OKLCH L 40.5% C 0.081 H 66.4°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#663F0F
RGB	rgb(102, 63, 15)
HSL	hsl(33, 74%, 23%)
HSV	hsv(33, 85%, 40%)
CMYK	cmyk(0%, 38.2%, 85.3%, 60%)
CIE-LAB	lab(30.44, 12.80, 34.31)
CIE-LCH	lch(30.44, 36.62, 69.54°)
OKLab	oklab(40.5% 0.0324 0.0742)
OKLCH	oklch(40.5% 0.081 66.4)
XYZ	xyz(7.3438, 6.4150, 1.3033)
Luminance	0.0641 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663F0F #0F3666

analogous

#66130F #663F0F #61660F

triadic

#663F0F #0F663F #3F0F66

tetradic

#663F0F #0F6613 #0F3666 #660F61

square

#663F0F #0F6613 #0F3666 #660F61

split-complementary

#663F0F #0F6166 #130F66

monochromatic

#1B1004 #311E07 #663F0F #9B6017 #D1811F

Accessibility & contrast

On white

9.20

#663F0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#663F0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663F0F

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663F0F	#FFFFFF	#000000	##FFFFFF
##663F0F	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C4207

Deuteranopia (green-blind)

#554B10

Tritanopia (blue-blind)

#703636

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #663f0f;
/* rgb */ color: rgb(102, 63, 15);
/* oklch */ color: oklch(40.5% 0.081 66.4);

Tailwind

colors: {
  custom: {
    50: '#967452',
    500: '#663f0f',
    950: '#000000',
  },
}

SCSS

$custom: #663f0f;
$custom-light: #967452;
$custom-dark: #000000;

JSON

{
  "hex": "#663f0f",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 15
  },
  "hsl": {
    "h": 33.103,
    "s": 74.359,
    "l": 22.941
  },
  "oklch": {
    "l": 0.40502,
    "c": 0.08095,
    "h": 66.4
  },
  "luminance": 0.06414
}

Semantic roles & 50–950 ramp

primary

#663F0F

secondary

#32639F

accent

#8AF137

background

#F9F7F4

surface

#F2EDE7

border

#CCC8C3

text

#0E0802

muted

#7E7B78

Preview Lab

Preview with #663F0F

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

Preview Lab → · Contrast checker → · Palette generator →