#53FDFF

sRGB: 83 / 253 / 255

#53FDFF belongs to the cyan family. Its hex code tells a screen to mix 83 red, 253 green and 255 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 180.7° lands in the cyan region. Its 100.0% saturation makes it strong in color at this lightness. HSL lightness is 66.3% 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 (16.86:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 83, 253, 255
HSL: 180.70°, 100.00%, 66.27%
HSV / HSB: 180.70°, 67.45%, 100.00%
CMYK (approx.): 67.45%, 0.78%, 0.00%, 0.00%
CIE XYZ (D65, Y = 100 for white): 56.739, 79.306, 106.928
CIELAB (D65, 2° observer): 91.373, -41.809, -13.657
WCAG relative luminance: 0.79310
24-bit decimal: 5504511

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 #53FDFF 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: 16.86:1

Normal text: AAA
Large text: AAA

White text: 1.25:1

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

#FF5553 sits half a turn (180°) from #53FDFF 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.

#53FDFF #FF5553

Analogous

#53FFAB and #53A7FF sit 30° to either side of #53FDFF. 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.

#53FFAB #53FDFF #53A7FF

Triadic

#53FDFF, #FF53FD and #FDFF53 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#53FDFF #FF53FD #FDFF53

Split complementary

Start at #53FDFF and look across the wheel. #FF53A7 and #FFAB53 sit 30° to either side of its exact opposite, giving you two different accent choices.

#53FDFF #FF53A7 #FFAB53

Square

Starting with #53FDFF, each quarter turn (90°) takes you to the next hue: #AB53FF, #FF5553, then #A7FF53. Across the square, #53FDFF pairs with #FF5553, and #AB53FF with #A7FF53.

#53FDFF #AB53FF #FF5553 #A7FF53

Tetradic

#53FDFF and #FF5553 are opposites, as are #5553FF and #FDFF53. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#53FDFF #5553FF #FF5553 #FDFF53

Tints

Mixing #53FDFF with white in 20% steps produces this scale. The first mixture, #75FDFF, keeps 80% of the original. By #DDFFFF, the mixture is 80% white.

#53FDFF #75FDFF #98FEFF #BAFEFF #DDFFFF #FFFFFF

Shades

Mixing #53FDFF with black in 20% steps produces this scale. The first mixture, #42CACC, keeps 80% of the original. By #113333, the mixture is 80% black.

#53FDFF #42CACC #329899 #216566 #113333 #000000

Tones

Mixing #53FDFF with middle gray in 20% steps produces this scale. The first mixture, #5CE4E6, keeps 80% of the original. By #779999, the mixture is 80% middle gray.

#53FDFF #5CE4E6 #65CBCC #6EB2B3 #779999 #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

#53FDFF

RGB

rgb(83 253 255)

HSL

hsl(180.698 100.000% 66.275%)

CSS example

.color-sample {
  background-color: #53FDFF;
  color: #000000;
}

Channel breakdown

RGB

#53FDFF uses 83 red, 253 green and 255 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 32.5%

Green 99.2%

Blue 100.0%

CMYK

A simple CMYK estimate for #53FDFF is 67.5% cyan, 0.8% magenta, 0.0% yellow and 0.0% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 67.5%

Magenta 0.8%

Yellow 0.0%

Black 0.0%

Nearby colors

The nearest shorthand match is #55FFFF. Its matching digit pairs let you write it as #5FF in CSS. For a modern design, keep #53FDFF when you want an exact match. Use its web-safe neighbor, #66FFFF, when matching a legacy palette of 216 colors.

Nearest shorthand: #55FFFF Nearest web-safe: #66FFFF

Gradient to complement

#53FDFF #70E1E2 #8CC5C6 #A9A9A9 #C68D8C #E27170 #FF5553

Color vision previews

Compare how #53FDFF 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.

#ECF1FF

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.

#D3DEFF

Tritanopia

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

#00FFFD

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.

#C7F3FF

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.

#BAEAFF

Tritanomaly (50%)

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

#4BFEFE

Grayscale (luminance)

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

#E6E6E6

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.

#B1F2F3

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 0.08650 G 0.98225 B 1.00000

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 0.53266 G 0.97883 B 0.99254

Linear Display P3

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

R 0.24553 G 0.95252 B 0.98311

CIE xyY

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

x 0.234 y 0.326 Y 79.306

CMY

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

C % 67.451 M % 0.784 Y % 0.000

Binary RGB

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

01010011 11111101 11111111