#81663C

sRGB · 129 / 102 / 60

#81663C belongs to the orange family. Its hex code tells a screen to mix 129 red, 102 green and 60 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 36.5° lands in the orange region. Its 36.5% saturation makes it partway between gray and the most vivid version of this hue at this lightness. HSL lightness is 37.1% on a scale from black (0%) to white (100%). Of black and white lettering, white has the clearer light-to-dark separation on this background (5.39:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 129, 102, 60
HSL: 36.52°, 36.51%, 37.06%
HSV / HSB: 36.52°, 53.49%, 50.59%
CMYK (approx.): 0.00%, 20.93%, 53.49%, 49.41%
CIE XYZ (D65, Y = 100 for white): 14.620, 14.497, 6.303
CIELAB (D65, 2° observer): 44.937, 5.242, 27.700
WCAG relative luminance: 0.14496
24-bit decimal: 8480316

CMYK uses a profile-free approximation. Printed output depends on the press, ink and paper. Lab uses a D65 white point.

Text contrast

Contrast tells you how clearly lettering separates from #81663C in light and dark. The ratio compares relative luminance, a measure of light weighted for human vision. Identical colors give 1:1 and black against white gives 21:1. A ratio of 2.99:1 falls just below the 3:1 AA minimum for large text. Body text needs at least 4.5:1 because its finer strokes are harder to distinguish.

Black text · 3.90:1

Normal text: Fail
Large text: AA

White text · 5.39:1

Normal text: AA
Large text: AAA

AA and AAA are WCAG accessibility levels. AAA sets a higher bar: 7:1 for normal text and 4.5:1 for large text. Large text begins at 18 pt regular or 14 pt bold. Ratings use the unrounded ratio. WCAG text contrast guidance

Palettes & scales

Harmonies rotate the hue. Scales mix the starting color with white, black or middle gray in 20% steps in encoded sRGB.

Complementary

#3C5781 sits half a turn (180°) from #81663C on the HSL wheel. Keeping saturation and lightness steady while crossing to the opposite hue gives you a contrasting accent. Check text contrast separately before using the pair for lettering.

#81663C #3C5781

Analogous

#81443C and #79813C sit 30° to either side of #81663C. The three hues are neighbors on the wheel, so you can change the color of a border or highlight while keeping it close to the original.

#81443C #81663C #79813C

Triadic

#81663C, #3C8166 and #663C81 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#81663C #3C8166 #663C81

Split complementary

Start at #81663C and look across the wheel. #3C7A81 and #433C81 sit 30° to either side of its exact opposite, giving you two different accent choices.

#81663C #3C7A81 #433C81

Square

Starting with #81663C, each quarter turn (90°) takes you to the next hue: #3C8144, #3C5781, then #813C7A. Across the square, #81663C pairs with #3C5781, and #3C8144 with #813C7A.

#81663C #3C8144 #3C5781 #813C7A

Tetradic

#81663C and #3C5781 are opposites, as are #57813C and #663C81. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#81663C #57813C #3C5781 #663C81

Tints

Mixing #81663C with white in 20% steps produces this scale. The first mixture, #9A8563, keeps 80% of the original. By #E6E0D8, the mixture is 80% white.

#81663C #9A8563 #B3A38A #CDC2B1 #E6E0D8 #FFFFFF

Shades

Mixing #81663C with black in 20% steps produces this scale. The first mixture, #675230, keeps 80% of the original. By #1A140C, the mixture is 80% black.

#81663C #675230 #4D3D24 #342918 #1A140C #000000

Tones

Mixing #81663C with middle gray in 20% steps produces this scale. The first mixture, #816B4A, keeps 80% of the original. By #807B72, the mixture is 80% middle gray.

#81663C #816B4A #817057 #807665 #807B72 #808080

Copy color codes

Hex, RGB and HSL are three ways to write this screen color. Paste any of them into a CSS color property.

Hex

#81663C

RGB

rgb(129 102 60)

HSL

hsl(36.522 36.508% 37.059%)

CSS example

.color-sample {
  background-color: #81663C;
  color: #FFFFFF;
}

Channel breakdown

RGB

#81663C uses 129 red, 102 green and 60 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 50.6%

Green 40.0%

Blue 23.5%

CMYK

A simple CMYK estimate for #81663C is 0.0% cyan, 20.9% magenta, 53.5% yellow and 49.4% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 20.9%

Yellow 53.5%

Black 49.4%

Nearby colors

The nearest shorthand match is #886644. Its matching digit pairs let you write it as #864 in CSS. For a modern design, keep #81663C when you want an exact match. Use its web-safe neighbor, #996633, when matching a legacy palette of 216 colors.

Nearest shorthand · #886644 Nearest web-safe · #996633

Gradient to complement

#81663C #766448 #6A6153 #5F5F5F #535C6A #485A76 #3C5781

Color vision previews

Compare how #81663C appears in each simulation. When two chart lines or status indicators become hard to tell apart, a label, shape or line pattern gives readers another way to distinguish them. Individual perception varies.

Protanopia

A red–green color vision deficiency. Without a distinct response from long-wavelength cones, some reds and greens can look alike, and reds can appear darker.

#716639

Deuteranopia

A red–green color vision deficiency. Without a distinct response from medium-wavelength cones, some greens can be difficult to distinguish from reds or browns.

#776D3D

Tritanopia

A blue–yellow color vision deficiency. Without a distinct response from short-wavelength cones, blue can resemble green, and yellow can resemble pink.

#8B5E5C

Protanomaly (50%)

An altered long-wavelength cone response can make reds appear dimmer and harder to distinguish from greens. This swatch shows the model’s halfway setting.

#77673A

Deuteranomaly (50%)

An altered medium-wavelength cone response can reduce the visible difference between reds and greens. This swatch shows the model’s halfway setting.

#7A6A3C

Tritanomaly (50%)

An altered short-wavelength cone response can make blue harder to distinguish from green. This swatch shows the model’s halfway setting.

#82644A

Grayscale (luminance)

This design check removes hue and preserves relative luminance so you can compare light and dark areas.

#6A6A6A

Partial grayscale (50% blend)

This design check mixes the original color halfway toward its grayscale equivalent in linear light. Use it to see how a design holds up as color fades.

#766857

Technical reference

CAM16 and CIECAM02 below assume D65 white, an average surround, background Y of 20 against white at 100, and adapting luminance of 4.07 cd/m².

Linear sRGB

These channels scale with emitted light. Use them for lighting calculations and physically meaningful blends.

R 0.21953 G 0.13287 B 0.04519

Display P3

P3 displays can reproduce a wider range of reds and greens. These coordinates reproduce this same sRGB swatch on a color-managed P3 display.

R 0.48916 G 0.40408 B 0.25890

Linear Display P3

These P3 channels are proportional to light, before display encoding.

R 0.20414 G 0.13574 B 0.05451

CIE xyY

The x and y coordinates locate chromaticity on a diagram. Y gives relative luminance on a scale where white is 100.

x 0.413 y 0.409 Y 14.497

CMY

Ideal cyan, magenta and yellow are the complements of the encoded red, green and blue channels.

C % 49.412 M % 60.000 Y % 76.471

Binary RGB

Each eight-bit group represents one channel. Together they store the 24-bit hex color.

10000001 01100110 00111100