#228DFD

sRGB · 34 / 141 / 253

#228DFD belongs to the azure family. Its hex code tells a screen to mix 34 red, 141 green and 253 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 210.7° lands in the azure region. Its 98.2% saturation makes it strong in color at this lightness. HSL lightness is 56.3% 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 (6.30:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 34, 141, 253
HSL: 210.68°, 98.21%, 56.27%
HSV / HSB: 210.68°, 86.56%, 99.22%
CMYK (approx.): 86.56%, 44.27%, 0.00%, 0.78%
CIE XYZ (D65, Y = 100 for white): 27.912, 26.480, 96.572
CIELAB (D65, 2° observer): 58.490, 11.267, -63.714
WCAG relative luminance: 0.26482
24-bit decimal: 2264573

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 #228DFD 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 · 6.30:1

Normal text: AA
Large text: AAA

White text · 3.34:1

Normal text: Fail
Large text: AA

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

#FD9222 sits half a turn (180°) from #228DFD 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.

#228DFD #FD9222

Analogous

#22FAFD and #2522FD sit 30° to either side of #228DFD. 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.

#22FAFD #228DFD #2522FD

Triadic

#228DFD, #FD228D and #8DFD22 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#228DFD #FD228D #8DFD22

Split complementary

Start at #228DFD and look across the wheel. #FD2522 and #FAFD22 sit 30° to either side of its exact opposite, giving you two different accent choices.

#228DFD #FD2522 #FAFD22

Square

Starting with #228DFD, each quarter turn (90°) takes you to the next hue: #FD22FA, #FD9222, then #22FD25. Across the square, #228DFD pairs with #FD9222, and #FD22FA with #22FD25.

#228DFD #FD22FA #FD9222 #22FD25

Tetradic

#228DFD and #FD9222 are opposites, as are #9222FD and #8DFD22. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#228DFD #9222FD #FD9222 #8DFD22

Tints

Mixing #228DFD with white in 20% steps produces this scale. The first mixture, #4EA4FD, keeps 80% of the original. By #D3E8FF, the mixture is 80% white.

#228DFD #4EA4FD #7ABBFE #A7D1FE #D3E8FF #FFFFFF

Shades

Mixing #228DFD with black in 20% steps produces this scale. The first mixture, #1B71CA, keeps 80% of the original. By #071C33, the mixture is 80% black.

#228DFD #1B71CA #145598 #0E3865 #071C33 #000000

Tones

Mixing #228DFD with middle gray in 20% steps produces this scale. The first mixture, #358AE4, keeps 80% of the original. By #6D8399, the mixture is 80% middle gray.

#228DFD #358AE4 #4888CB #5A85B2 #6D8399 #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

#228DFD

RGB

rgb(34 141 253)

HSL

hsl(210.685 98.206% 56.275%)

CSS example

.color-sample {
  background-color: #228DFD;
  color: #000000;
}

Channel breakdown

RGB

#228DFD uses 34 red, 141 green and 253 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 13.3%

Green 55.3%

Blue 99.2%

CMYK

A simple CMYK estimate for #228DFD is 86.6% cyan, 44.3% magenta, 0.0% yellow and 0.8% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 86.6%

Magenta 44.3%

Yellow 0.0%

Black 0.8%

Nearby colors

The nearest shorthand match is #2288FF. Its matching digit pairs let you write it as #28F in CSS. For a modern design, keep #228DFD when you want an exact match. Use its web-safe neighbor, #3399FF, when matching a legacy palette of 216 colors.

Nearest shorthand · #2288FF Nearest web-safe · #3399FF

Gradient to complement

#228DFD #478ED9 #6B8FB4 #909090 #B4906B #D99147 #FD9222

Color vision previews

Compare how #228DFD 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.

#5197FF

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.

#1B84FB

Tritanopia

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

#00A8B9

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.

#4192FF

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.

#2588FC

Tritanomaly (50%)

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

#0095E7

Grayscale (luminance)

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

#8D8D8D

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.

#698DCF

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 0.01600 G 0.26636 B 0.98225

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 0.27271 G 0.54496 B 0.96116

Linear Display P3

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

R 0.06044 G 0.25805 B 0.91392

CIE xyY

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

x 0.185 y 0.175 Y 26.480

CMY

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

C % 86.667 M % 44.706 Y % 0.784

Binary RGB

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

00100010 10001101 11111101