#831779

sRGB: 131 / 23 / 121

#831779 belongs to the magenta family. Its hex code tells a screen to mix 131 red, 23 green and 121 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 305.6° lands in the magenta region. Its 70.1% saturation makes it strong in color at this lightness. HSL lightness is 30.2% 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 (8.88:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 131, 23, 121
HSL: 305.56°, 70.13%, 30.20%
HSV / HSB: 305.56°, 82.44%, 51.37%
CMYK (approx.): 0.00%, 82.44%, 7.63%, 48.63%
CIE XYZ (D65, Y = 100 for white): 13.117, 6.819, 18.715
CIELAB (D65, 2° observer): 31.392, 54.112, -29.483
WCAG relative luminance: 0.06819
24-bit decimal: 8591225

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 #831779 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: 2.36:1

Normal text: Fail
Large text: Fail

White text: 8.88:1

Normal text: AAA
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.

Reference: 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

#178321 sits half a turn (180°) from #831779 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.

#831779 #178321

Analogous

#571783 and #831743 sit 30° to either side of #831779. 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.

#571783 #831779 #831743

Triadic

#831779, #798317 and #177983 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#831779 #798317 #177983

Split complementary

Start at #831779 and look across the wheel. #438317 and #178357 sit 30° to either side of its exact opposite, giving you two different accent choices.

#831779 #438317 #178357

Square

Starting with #831779, each quarter turn (90°) takes you to the next hue: #835717, #178321, then #174383. Across the square, #831779 pairs with #178321, and #835717 with #174383.

#831779 #835717 #178321 #174383

Tetradic

#831779 and #178321 are opposites, as are #832117 and #177983. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#831779 #832117 #178321 #177983

Tints

Mixing #831779 with white in 20% steps produces this scale. The first mixture, #9C4594, keeps 80% of the original. By #E6D1E4, the mixture is 80% white.

#831779 #9C4594 #B574AF #CDA2C9 #E6D1E4 #FFFFFF

Shades

Mixing #831779 with black in 20% steps produces this scale. The first mixture, #691261, keeps 80% of the original. By #1A0518, the mixture is 80% black.

#831779 #691261 #4F0E49 #340930 #1A0518 #000000

Tones

Mixing #831779 with middle gray in 20% steps produces this scale. The first mixture, #822C7A, keeps 80% of the original. By #816B7F, the mixture is 80% middle gray.

#831779 #822C7A #82417C #81567D #816B7F #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

#831779

RGB

rgb(131 23 121)

HSL

hsl(305.556 70.130% 30.196%)

CSS example

.color-sample {
  background-color: #831779;
  color: #FFFFFF;
}

Channel breakdown

RGB

#831779 uses 131 red, 23 green and 121 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 51.4%

Green 9.0%

Blue 47.5%

CMYK

A simple CMYK estimate for #831779 is 0.0% cyan, 82.4% magenta, 7.6% yellow and 48.6% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 82.4%

Yellow 7.6%

Black 48.6%

Nearby colors

The nearest shorthand match is #881177. Its matching digit pairs let you write it as #817 in CSS. For a modern design, keep #831779 when you want an exact match. Use its web-safe neighbor, #990066, when matching a legacy palette of 216 colors.

Nearest shorthand: #881177 Nearest web-safe: #990066

Gradient to complement

#831779 #71296A #5F3B5C #4D4D4D #3B5F3E #297130 #178321

Color vision previews

Compare how #831779 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.

#0E407C

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.

#3D4F77

Tritanopia

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

#892548

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.

#52387A

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.

#594277

Tritanomaly (50%)

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

#82226B

Grayscale (luminance)

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

#4A4A4A

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.

#6B3765

Reference: National Eye Institute: Types of Color Vision Deficiency

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 0.22697 G 0.00857 B 0.19120

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 0.47102 G 0.13245 B 0.45967

Linear Display P3

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

R 0.18819 G 0.01582 B 0.17859

CIE xyY

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

x 0.339 y 0.176 Y 6.819

CMY

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

C % 48.627 M % 90.980 Y % 52.549

Binary RGB

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

10000011 00010111 01111001