#AA4021

sRGB · 170 / 64 / 33

#AA4021 belongs to the red family. Its hex code tells a screen to mix 170 red, 64 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 13.6° lands in the red region. Its 67.5% saturation makes it partway between gray and the most vivid version of this hue at this lightness. HSL lightness is 39.8% 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 (6.06:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 170, 64, 33
HSL: 13.58°, 67.49%, 39.80%
HSV / HSB: 13.58°, 80.59%, 66.67%
CMYK (approx.): 0.00%, 62.35%, 80.59%, 33.33%
CIE XYZ (D65, Y = 100 for white): 18.685, 12.324, 2.834
CIELAB (D65, 2° observer): 41.727, 41.909, 40.263
WCAG relative luminance: 0.12323
24-bit decimal: 11157537

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 #AA4021 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 · 3.46:1

Normal text: Fail
Large text: AA

White text · 6.06:1

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

#218BAA sits half a turn (180°) from #AA4021 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.

#AA4021 #218BAA

Analogous

#AA2146 and #AA8521 sit 30° to either side of #AA4021. 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.

#AA2146 #AA4021 #AA8521

Triadic

#AA4021, #21AA40 and #4021AA are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#AA4021 #21AA40 #4021AA

Split complementary

Start at #AA4021 and look across the wheel. #21AA85 and #2146AA sit 30° to either side of its exact opposite, giving you two different accent choices.

#AA4021 #21AA85 #2146AA

Square

Starting with #AA4021, each quarter turn (90°) takes you to the next hue: #46AA21, #218BAA, then #8521AA. Across the square, #AA4021 pairs with #218BAA, and #46AA21 with #8521AA.

#AA4021 #46AA21 #218BAA #8521AA

Tetradic

#AA4021 and #218BAA are opposites, as are #8BAA21 and #4021AA. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#AA4021 #8BAA21 #218BAA #4021AA

Tints

Mixing #AA4021 with white in 20% steps produces this scale. The first mixture, #BB664D, keeps 80% of the original. By #EED9D3, the mixture is 80% white.

#AA4021 #BB664D #CC8C7A #DDB3A6 #EED9D3 #FFFFFF

Shades

Mixing #AA4021 with black in 20% steps produces this scale. The first mixture, #88331A, keeps 80% of the original. By #220D07, the mixture is 80% black.

#AA4021 #88331A #662614 #441A0D #220D07 #000000

Tones

Mixing #AA4021 with middle gray in 20% steps produces this scale. The first mixture, #A24D34, keeps 80% of the original. By #88736D, the mixture is 80% middle gray.

#AA4021 #A24D34 #995A47 #91665A #88736D #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

#AA4021

RGB

rgb(170 64 33)

HSL

hsl(13.577 67.488% 39.804%)

CSS example

.color-sample {
  background-color: #AA4021;
  color: #FFFFFF;
}

Channel breakdown

RGB

#AA4021 uses 170 red, 64 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 66.7%

Green 25.1%

Blue 12.9%

CMYK

A simple CMYK estimate for #AA4021 is 0.0% cyan, 62.4% magenta, 80.6% yellow and 33.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 62.4%

Yellow 80.6%

Black 33.3%

Nearby colors

The nearest shorthand match is #AA4422. Its matching digit pairs let you write it as #A42 in CSS. For a modern design, keep #AA4021 when you want an exact match. Use its web-safe neighbor, #993333, when matching a legacy palette of 216 colors.

Nearest shorthand · #AA4422 Nearest web-safe · #993333

Gradient to complement

#AA4021 #934D38 #7C594F #666666 #4F727C #387F93 #218BAA

Color vision previews

Compare how #AA4021 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.

#5E541D

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.

#786B1D

Tritanopia

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

#BB253A

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.

#80511C

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.

#895F1D

Tritanomaly (50%)

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

#AB3D2D

Grayscale (luminance)

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

#626262

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.

#8C534A

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 0.40198 G 0.05127 B 0.01521

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 0.61780 G 0.27821 B 0.16966

Linear Display P3

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

R 0.33971 G 0.06291 B 0.02443

CIE xyY

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

x 0.552 y 0.364 Y 12.324

CMY

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

C % 33.333 M % 74.902 Y % 87.059

Binary RGB

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

10101010 01000000 00100001