#01ACBA

sRGB: 1 / 172 / 186

#01ACBA belongs to the cyan family. Its hex code tells a screen to mix 1 red, 172 green and 186 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 184.5° lands in the cyan region. Its 98.9% saturation makes it strong in color at this lightness. HSL lightness is 36.7% 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 (7.61:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 1, 172, 186
HSL: 184.54°, 98.93%, 36.67%
HSV / HSB: 184.54°, 99.46%, 72.94%
CMYK (approx.): 99.46%, 7.53%, 0.00%, 27.06%
CIE XYZ (D65, Y = 100 for white): 23.626, 33.055, 51.591
CIELAB (D65, 2° observer): 64.205, -31.331, -17.624
WCAG relative luminance: 0.33057
24-bit decimal: 109754

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 #01ACBA 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: 7.61:1

Normal text: AAA
Large text: AAA

White text: 2.76:1

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

#BA0F01 sits half a turn (180°) from #01ACBA 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.

#01ACBA #BA0F01

Analogous

#01BA6B and #0150BA sit 30° to either side of #01ACBA. 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.

#01BA6B #01ACBA #0150BA

Triadic

#01ACBA, #BA01AC and #ACBA01 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#01ACBA #BA01AC #ACBA01

Split complementary

Start at #01ACBA and look across the wheel. #BA0150 and #BA6B01 sit 30° to either side of its exact opposite, giving you two different accent choices.

#01ACBA #BA0150 #BA6B01

Square

Starting with #01ACBA, each quarter turn (90°) takes you to the next hue: #6B01BA, #BA0F01, then #50BA01. Across the square, #01ACBA pairs with #BA0F01, and #6B01BA with #50BA01.

#01ACBA #6B01BA #BA0F01 #50BA01

Tetradic

#01ACBA and #BA0F01 are opposites, as are #0F01BA and #ACBA01. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#01ACBA #0F01BA #BA0F01 #ACBA01

Tints

Mixing #01ACBA with white in 20% steps produces this scale. The first mixture, #34BDC8, keeps 80% of the original. By #CCEEF1, the mixture is 80% white.

#01ACBA #34BDC8 #67CDD6 #99DEE3 #CCEEF1 #FFFFFF

Shades

Mixing #01ACBA with black in 20% steps produces this scale. The first mixture, #018A95, keeps 80% of the original. By #002225, the mixture is 80% black.

#01ACBA #018A95 #016770 #00454A #002225 #000000

Tones

Mixing #01ACBA with middle gray in 20% steps produces this scale. The first mixture, #1AA3AE, keeps 80% of the original. By #67898C, the mixture is 80% middle gray.

#01ACBA #1AA3AE #349AA3 #4D9297 #67898C #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

#01ACBA

RGB

rgb(1 172 186)

HSL

hsl(184.541 98.930% 36.667%)

CSS example

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

Channel breakdown

RGB

#01ACBA uses 1 red, 172 green and 186 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.4%

Green 67.5%

Blue 72.9%

CMYK

A simple CMYK estimate for #01ACBA is 99.5% cyan, 7.5% magenta, 0.0% yellow and 27.1% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 99.5%

Magenta 7.5%

Yellow 0.0%

Black 27.1%

Nearby colors

The nearest shorthand match is #00AABB. Its matching digit pairs let you write it as #0AB in CSS. For a modern design, keep #01ACBA when you want an exact match. Use its web-safe neighbor, #0099CC, when matching a legacy palette of 216 colors.

Nearest shorthand: #00AABB Nearest web-safe: #0099CC

Gradient to complement

#01ACBA #20929B #3F787C #5E5E5E #7C433F #9B2920 #BA0F01

Color vision previews

Compare how #01ACBA 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.

#9CA4BB

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.

#8795BA

Tritanopia

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

#00B4B0

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.

#7FA6BB

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.

#749EBB

Tritanomaly (50%)

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

#00ADB6

Grayscale (luminance)

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

#9C9C9C

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.

#71A4AC

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 0.49102

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 0.71997

Linear Display P3

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

R 0.07349 G 0.39886 B 0.47696

CIE xyY

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

x 0.218 y 0.305 Y 33.055

CMY

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

C % 99.608 M % 32.549 Y % 27.059

Binary RGB

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

00000001 10101100 10111010