#407DC9

sRGB: 64 / 125 / 201

Silver raindrops linger without sound
Hidden pathways illuminate forgotten empires
Boundless spirits reveal unspoken wonders

#407DC9 belongs to the azure family. Its hex code tells a screen to mix 64 red, 125 green and 201 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 213.3° lands in the azure region. Its 55.9% saturation makes it partway between gray and the most vivid version of this hue at this lightness. HSL lightness is 52.0% 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 (4.99:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 64, 125, 201
HSL: 213.28°, 55.92%, 51.96%
HSV / HSB: 213.28°, 68.16%, 78.82%
CMYK (approx.): 68.16%, 37.81%, 0.00%, 21.18%
CIE XYZ (D65, Y = 100 for white): 19.989, 19.973, 58.062
CIELAB (D65, 2° observer): 51.807, 5.071, -45.264
WCAG relative luminance: 0.19974
24-bit decimal: 4226505

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 #407DC9 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: 4.99:1

Normal text: AA
Large text: AAA

White text: 4.20:1

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.

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

#C98C40 sits half a turn (180°) from #407DC9 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.

#407DC9 #C98C40

Analogous

#40C2C9 and #4740C9 sit 30° to either side of #407DC9. 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.

#40C2C9 #407DC9 #4740C9

Triadic

#407DC9, #C9407D and #7DC940 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#407DC9 #C9407D #7DC940

Split complementary

Start at #407DC9 and look across the wheel. #C94740 and #C2C940 sit 30° to either side of its exact opposite, giving you two different accent choices.

#407DC9 #C94740 #C2C940

Square

Starting with #407DC9, each quarter turn (90°) takes you to the next hue: #C940C2, #C98C40, then #40C947. Across the square, #407DC9 pairs with #C98C40, and #C940C2 with #40C947.

#407DC9 #C940C2 #C98C40 #40C947

Tetradic

#407DC9 and #C98C40 are opposites, as are #8C40C9 and #7DC940. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#407DC9 #8C40C9 #C98C40 #7DC940

Tints

Mixing #407DC9 with white in 20% steps produces this scale. The first mixture, #6697D4, keeps 80% of the original. By #D9E5F4, the mixture is 80% white.

#407DC9 #6697D4 #8CB1DF #B3CBE9 #D9E5F4 #FFFFFF

Shades

Mixing #407DC9 with black in 20% steps produces this scale. The first mixture, #3364A1, keeps 80% of the original. By #0D1928, the mixture is 80% black.

#407DC9 #3364A1 #264B79 #1A3250 #0D1928 #000000

Tones

Mixing #407DC9 with middle gray in 20% steps produces this scale. The first mixture, #4D7EBA, keeps 80% of the original. By #737F8F, the mixture is 80% middle gray.

#407DC9 #4D7EBA #5A7EAC #667F9D #737F8F #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

#407DC9

RGB

rgb(64 125 201)

HSL

hsl(213.285 55.918% 51.961%)

CSS example

.color-sample {
  background-color: #407DC9;
  color: #000000;
}

Channel breakdown

RGB

#407DC9 uses 64 red, 125 green and 201 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 25.1%

Green 49.0%

Blue 78.8%

CMYK

A simple CMYK estimate for #407DC9 is 68.2% cyan, 37.8% magenta, 0.0% yellow and 21.2% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 68.2%

Magenta 37.8%

Yellow 0.0%

Black 21.2%

Nearby colors

The nearest shorthand match is #4477CC. Its matching digit pairs let you write it as #47C in CSS. For a modern design, keep #407DC9 when you want an exact match. Use its web-safe neighbor, #3366CC, when matching a legacy palette of 216 colors.

Nearest shorthand: #4477CC Nearest web-safe: #3366CC

Gradient to complement

#407DC9 #5780B2 #6E829B #858585 #9B876E #B28A57 #C98C40

Color vision previews

Compare how #407DC9 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.

#5B82CC

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.

#4776C7

Tritanopia

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

#008F99

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.

#517FCB

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.

#4679C8

Tritanomaly (50%)

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

#3282B9

Grayscale (luminance)

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

#7B7B7B

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.

#637CA8

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 0.05127 G 0.20508 B 0.58408

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 0.31056 G 0.48450 B 0.76584

Linear Display P3

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

R 0.07858 G 0.19997 B 0.54754

CIE xyY

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

x 0.204 y 0.204 Y 19.973

CMY

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

C % 74.902 M % 50.980 Y % 21.176

Binary RGB

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

01000000 01111101 11001001