#406DFD

sRGB · 64 / 109 / 253

#406DFD belongs to the blue family. Its hex code tells a screen to mix 64 red, 109 green and 253 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 225.7° lands in the blue region. Its 97.9% saturation makes it strong in color at this lightness. HSL lightness is 62.2% 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 (4.82:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 64, 109, 253
HSL: 225.71°, 97.93%, 62.16%
HSV / HSB: 225.71°, 74.70%, 99.22%
CMYK (approx.): 74.70%, 56.92%, 0.00%, 0.78%
CIE XYZ (D65, Y = 100 for white): 25.310, 19.118, 95.288
CIELAB (D65, 2° observer): 50.825, 33.642, -76.074
WCAG relative luminance: 0.19119
24-bit decimal: 4222461

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 #406DFD 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 · 4.82:1

Normal text: AA
Large text: AAA

White text · 4.35:1

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

#FDD040 sits half a turn (180°) from #406DFD 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.

#406DFD #FDD040

Analogous

#40CBFD and #7240FD sit 30° to either side of #406DFD. 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.

#40CBFD #406DFD #7240FD

Triadic

#406DFD, #FD406D and #6DFD40 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#406DFD #FD406D #6DFD40

Split complementary

Start at #406DFD and look across the wheel. #FD7240 and #CBFD40 sit 30° to either side of its exact opposite, giving you two different accent choices.

#406DFD #FD7240 #CBFD40

Square

Starting with #406DFD, each quarter turn (90°) takes you to the next hue: #FD40CB, #FDD040, then #40FD72. Across the square, #406DFD pairs with #FDD040, and #FD40CB with #40FD72.

#406DFD #FD40CB #FDD040 #40FD72

Tetradic

#406DFD and #FDD040 are opposites, as are #D040FD and #6DFD40. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#406DFD #D040FD #FDD040 #6DFD40

Tints

Mixing #406DFD with white in 20% steps produces this scale. The first mixture, #668AFD, keeps 80% of the original. By #D9E2FF, the mixture is 80% white.

#406DFD #668AFD #8CA7FE #B3C5FE #D9E2FF #FFFFFF

Shades

Mixing #406DFD with black in 20% steps produces this scale. The first mixture, #3357CA, keeps 80% of the original. By #0D1633, the mixture is 80% black.

#406DFD #3357CA #264198 #1A2C65 #0D1633 #000000

Tones

Mixing #406DFD with middle gray in 20% steps produces this scale. The first mixture, #4D71E4, keeps 80% of the original. By #737C99, the mixture is 80% middle gray.

#406DFD #4D71E4 #5A75CB #6678B2 #737C99 #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

#406DFD

RGB

rgb(64 109 253)

HSL

hsl(225.714 97.927% 62.157%)

CSS example

.color-sample {
  background-color: #406DFD;
  color: #000000;
}

Channel breakdown

RGB

#406DFD uses 64 red, 109 green and 253 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 25.1%

Green 42.7%

Blue 99.2%

CMYK

A simple CMYK estimate for #406DFD is 74.7% cyan, 56.9% magenta, 0.0% yellow and 0.8% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 74.7%

Magenta 56.9%

Yellow 0.0%

Black 0.8%

Nearby colors

The nearest shorthand match is #4466FF. Its matching digit pairs let you write it as #46F in CSS. For a modern design, keep #406DFD when you want an exact match. Use its web-safe neighbor, #3366FF, when matching a legacy palette of 216 colors.

Nearest shorthand · #4466FF Nearest web-safe · #3366FF

Gradient to complement

#406DFD #607EDE #7F8EBE #9F9F9F #BEAF7F #DEC060 #FDD040

Color vision previews

Compare how #406DFD 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.

#0082FF

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.

#0071FA

Tritanopia

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

#0091AA

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.

#007AFF

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.

#0071FC

Tritanomaly (50%)

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

#1E7AE3

Grayscale (luminance)

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

#797979

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.

#6273C9

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 0.05127 G 0.15293 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 0.29195 G 0.42299 B 0.95763

Linear Display P3

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

R 0.06932 G 0.14955 B 0.90631

CIE xyY

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

x 0.181 y 0.137 Y 19.118

CMY

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

C % 74.902 M % 57.255 Y % 0.784

Binary RGB

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

01000000 01101101 11111101