#01ACAB

sRGB: 1 / 172 / 171

#01ACAB belongs to the cyan family. Its hex code tells a screen to mix 1 red, 172 green and 171 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 179.6° lands in the cyan region. Its 98.8% saturation makes it strong in color at this lightness. HSL lightness is 33.9% on a scale from black (0%) to white (100%). Of black and white lettering, black has the clearer light-to-dark separation on this background (7.49:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 1, 172, 171
HSL: 179.65°, 98.84%, 33.92%
HSV / HSB: 179.65°, 99.42%, 67.45%
CMYK (approx.): 99.42%, 0.00%, 0.58%, 32.55%
CIE XYZ (D65, Y = 100 for white): 22.114, 32.450, 43.627
CIELAB (D65, 2° observer): 63.713, -36.064, -9.998
WCAG relative luminance: 0.32452
24-bit decimal: 109739

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 #01ACAB 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: 7.49:1

Normal text: AAA
Large text: AAA

White text: 2.80:1

Normal text: Fail
Large text: Fail

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

#AC0102 sits half a turn (180°) from #01ACAB 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.

#01ACAB #AC0102

Analogous

#01AC55 and #0158AC sit 30° to either side of #01ACAB. 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.

#01AC55 #01ACAB #0158AC

Triadic

#01ACAB, #AB01AC and #ACAB01 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#01ACAB #AB01AC #ACAB01

Split complementary

Start at #01ACAB and look across the wheel. #AC0158 and #AC5501 sit 30° to either side of its exact opposite, giving you two different accent choices.

#01ACAB #AC0158 #AC5501

Square

Starting with #01ACAB, each quarter turn (90°) takes you to the next hue: #5501AC, #AC0102, then #58AC01. Across the square, #01ACAB pairs with #AC0102, and #5501AC with #58AC01.

#01ACAB #5501AC #AC0102 #58AC01

Tetradic

#01ACAB and #AC0102 are opposites, as are #0102AC and #ACAB01. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#01ACAB #0102AC #AC0102 #ACAB01

Tints

Mixing #01ACAB with white in 20% steps produces this scale. The first mixture, #34BDBC, keeps 80% of the original. By #CCEEEE, the mixture is 80% white.

#01ACAB #34BDBC #67CDCD #99DEDD #CCEEEE #FFFFFF

Shades

Mixing #01ACAB with black in 20% steps produces this scale. The first mixture, #018A89, keeps 80% of the original. By #002222, the mixture is 80% black.

#01ACAB #018A89 #016767 #004544 #002222 #000000

Tones

Mixing #01ACAB with middle gray in 20% steps produces this scale. The first mixture, #1AA3A2, keeps 80% of the original. By #678989, the mixture is 80% middle gray.

#01ACAB #1AA3A2 #349A9A #4D9291 #678989 #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

#01ACAB

RGB

rgb(1 172 171)

HSL

hsl(179.649 98.844% 33.922%)

CSS example

.color-sample {
  background-color: #01ACAB;
  color: #000000;
}

Channel breakdown

RGB

#01ACAB uses 1 red, 172 green and 171 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.4%

Green 67.5%

Blue 67.1%

CMYK

A simple CMYK estimate for #01ACAB is 99.4% cyan, 0.0% magenta, 0.6% yellow and 32.5% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 99.4%

Magenta 0.0%

Yellow 0.6%

Black 32.5%

Nearby colors

The nearest shorthand match is #00AAAA. Its matching digit pairs let you write it as #0AA in CSS. For a modern design, keep #01ACAB when you want an exact match. Use its web-safe neighbor, #009999, when matching a legacy palette of 216 colors.

Nearest shorthand: #00AAAA Nearest web-safe: #009999

Gradient to complement

#01ACAB #1E908F #3A7373 #575757 #733A3A #901E1E #AC0102

Color vision previews

Compare how #01ACAB 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.

#A0A3AB

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.

#8C94AC

Tritanopia

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

#00B2AB

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.

#82A5AC

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.

#789DAC

Tritanomaly (50%)

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

#00ACAB

Grayscale (luminance)

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

#9A9A9A

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.

#70A3A3

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 0.00030 G 0.41254 B 0.40724

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 0.30051 G 0.66433 B 0.66569

Linear Display P3

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

R 0.07349 G 0.39886 B 0.40067

CIE xyY

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

x 0.225 y 0.330 Y 32.450

CMY

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

C % 99.608 M % 32.549 Y % 32.941

Binary RGB

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

00000001 10101100 10101011