#3661BA

sRGB · 54 / 97 / 186

#3661BA belongs to the azure family. Its hex code tells a screen to mix 54 red, 97 green and 186 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 220.5° lands in the azure region. Its 55.0% saturation makes it partway between gray and the most vivid version of this hue at this lightness. HSL lightness is 47.1% on a scale from black (0%) to white (100%). Of black and white lettering, white has the clearer light-to-dark separation on this background (5.87:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 54, 97, 186
HSL: 220.45°, 55.00%, 47.06%
HSV / HSB: 220.45°, 70.97%, 72.94%
CMYK (approx.): 70.97%, 47.85%, 0.00%, 27.06%
CIE XYZ (D65, Y = 100 for white): 14.658, 12.878, 48.169
CIELAB (D65, 2° observer): 42.579, 15.636, -51.384
WCAG relative luminance: 0.12879
24-bit decimal: 3563962

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 #3661BA 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 · 3.58:1

Normal text: Fail
Large text: AA

White text · 5.87:1

Normal text: AA
Large text: AAA

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

#BA8F36 sits half a turn (180°) from #3661BA 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.

#3661BA #BA8F36

Analogous

#36A3BA and #4D36BA sit 30° to either side of #3661BA. 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.

#36A3BA #3661BA #4D36BA

Triadic

#3661BA, #BA3661 and #61BA36 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#3661BA #BA3661 #61BA36

Split complementary

Start at #3661BA and look across the wheel. #BA4D36 and #A3BA36 sit 30° to either side of its exact opposite, giving you two different accent choices.

#3661BA #BA4D36 #A3BA36

Square

Starting with #3661BA, each quarter turn (90°) takes you to the next hue: #BA36A3, #BA8F36, then #36BA4D. Across the square, #3661BA pairs with #BA8F36, and #BA36A3 with #36BA4D.

#3661BA #BA36A3 #BA8F36 #36BA4D

Tetradic

#3661BA and #BA8F36 are opposites, as are #8F36BA and #61BA36. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#3661BA #8F36BA #BA8F36 #61BA36

Tints

Mixing #3661BA with white in 20% steps produces this scale. The first mixture, #5E81C8, keeps 80% of the original. By #D7DFF1, the mixture is 80% white.

#3661BA #5E81C8 #86A0D6 #AFC0E3 #D7DFF1 #FFFFFF

Shades

Mixing #3661BA with black in 20% steps produces this scale. The first mixture, #2B4E95, keeps 80% of the original. By #0B1325, the mixture is 80% black.

#3661BA #2B4E95 #203A70 #16274A #0B1325 #000000

Tones

Mixing #3661BA with middle gray in 20% steps produces this scale. The first mixture, #4567AE, keeps 80% of the original. By #717A8C, the mixture is 80% middle gray.

#3661BA #4567AE #546DA3 #627497 #717A8C #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

#3661BA

RGB

rgb(54 97 186)

HSL

hsl(220.455 55.000% 47.059%)

CSS example

.color-sample {
  background-color: #3661BA;
  color: #FFFFFF;
}

Channel breakdown

RGB

#3661BA uses 54 red, 97 green and 186 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 21.2%

Green 38.0%

Blue 72.9%

CMYK

A simple CMYK estimate for #3661BA is 71.0% cyan, 47.8% magenta, 0.0% yellow and 27.1% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 71.0%

Magenta 47.8%

Yellow 0.0%

Black 27.1%

Nearby colors

The nearest shorthand match is #3366BB. Its matching digit pairs let you write it as #36B in CSS. For a modern design, keep #3661BA when you want an exact match. Use its web-safe neighbor, #3366CC, when matching a legacy palette of 216 colors.

Nearest shorthand · #3366BB Nearest web-safe · #3366CC

Gradient to complement

#3661BA #4C69A4 #62708E #787878 #8E8062 #A4874C #BA8F36

Color vision previews

Compare how #3661BA 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.

#316BBD

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.

#0E5FB8

Tritanopia

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

#007684

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.

#3167BC

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.

#2360B9

Tritanomaly (50%)

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

#2668A9

Grayscale (luminance)

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

#656565

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.

#516397

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 0.03689 G 0.11954 B 0.49102

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 0.25171 G 0.37620 B 0.70585

Linear Display P3

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

R 0.05156 G 0.11679 B 0.45637

CIE xyY

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

x 0.194 y 0.170 Y 12.878

CMY

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

C % 78.824 M % 61.961 Y % 27.059

Binary RGB

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

00110110 01100001 10111010