#01ACF0

sRGB · 1 / 172 / 240

#01ACF0 belongs to the azure family. Its hex code tells a screen to mix 1 red, 172 green and 240 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 197.1° lands in the azure region. Its 99.2% saturation makes it strong in color at this lightness. HSL lightness is 47.3% 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 (8.16:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 1, 172, 240
HSL: 197.07°, 99.17%, 47.25%
HSV / HSB: 197.07°, 99.58%, 94.12%
CMYK (approx.): 99.58%, 28.33%, 0.00%, 5.88%
CIE XYZ (D65, Y = 100 for white): 30.491, 35.801, 87.744
CIELAB (D65, 2° observer): 66.367, -12.751, -44.090
WCAG relative luminance: 0.35803
24-bit decimal: 109808

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 #01ACF0 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 · 8.16:1

Normal text: AAA
Large text: AAA

White text · 2.57:1

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. 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

#F04501 sits half a turn (180°) from #01ACF0 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.

#01ACF0 #F04501

Analogous

#01F0BC and #0135F0 sit 30° to either side of #01ACF0. 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.

#01F0BC #01ACF0 #0135F0

Triadic

#01ACF0, #F001AC and #ACF001 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#01ACF0 #F001AC #ACF001

Split complementary

Start at #01ACF0 and look across the wheel. #F00135 and #F0BC01 sit 30° to either side of its exact opposite, giving you two different accent choices.

#01ACF0 #F00135 #F0BC01

Square

Starting with #01ACF0, each quarter turn (90°) takes you to the next hue: #BC01F0, #F04501, then #35F001. Across the square, #01ACF0 pairs with #F04501, and #BC01F0 with #35F001.

#01ACF0 #BC01F0 #F04501 #35F001

Tetradic

#01ACF0 and #F04501 are opposites, as are #4501F0 and #ACF001. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#01ACF0 #4501F0 #F04501 #ACF001

Tints

Mixing #01ACF0 with white in 20% steps produces this scale. The first mixture, #34BDF3, keeps 80% of the original. By #CCEEFC, the mixture is 80% white.

#01ACF0 #34BDF3 #67CDF6 #99DEF9 #CCEEFC #FFFFFF

Shades

Mixing #01ACF0 with black in 20% steps produces this scale. The first mixture, #018AC0, keeps 80% of the original. By #002230, the mixture is 80% black.

#01ACF0 #018AC0 #016790 #004560 #002230 #000000

Tones

Mixing #01ACF0 with middle gray in 20% steps produces this scale. The first mixture, #1AA3DA, keeps 80% of the original. By #678996, the mixture is 80% middle gray.

#01ACF0 #1AA3DA #349AC3 #4D92AD #678996 #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

#01ACF0

RGB

rgb(1 172 240)

HSL

hsl(197.071 99.170% 47.255%)

CSS example

.color-sample {
  background-color: #01ACF0;
  color: #000000;
}

Channel breakdown

RGB

#01ACF0 uses 1 red, 172 green and 240 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 0.4%

Green 67.5%

Blue 94.1%

CMYK

A simple CMYK estimate for #01ACF0 is 99.6% cyan, 28.3% magenta, 0.0% yellow and 5.9% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 99.6%

Magenta 28.3%

Yellow 0.0%

Black 5.9%

Nearby colors

The nearest shorthand match is #00AAEE. Its matching digit pairs let you write it as #0AE in CSS. For a modern design, keep #01ACF0 when you want an exact match. Use its web-safe neighbor, #0099FF, when matching a legacy palette of 216 colors.

Nearest shorthand · #00AAEE Nearest web-safe · #0099FF

Gradient to complement

#01ACF0 #299BC8 #518AA0 #797979 #A06751 #C85629 #F04501

Color vision previews

Compare how #01ACF0 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.

#8AACF3

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.

#6E99EF

Tritanopia

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

#00BEC4

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.

#70AAF2

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.

#5FA1F0

Tritanomaly (50%)

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

#00B1E1

Grayscale (luminance)

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

#A1A1A1

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.

#75A7CE

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 0.87137

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 0.91789

Linear Display P3

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

R 0.07349 G 0.39886 B 0.82327

CIE xyY

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

x 0.198 y 0.232 Y 35.801

CMY

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

C % 99.608 M % 32.549 Y % 5.882

Binary RGB

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

00000001 10101100 11110000