Boston Blue Color


Boston Blue is pale, cool-toned shade of cool cyan. It is better contrasting with white. This color combines beautifully with warm red, warm green or warm magenta

Inverse Color #c46e4b
Complementary Color #b35d3b
Color Shade: cool cyan (197.36° hue)
Color Temperature: cool
Lightness: 46.86% (better contrasting with white)
Boston Blue Color Sample
Boston Blue Color Sample

Better Alternatives To #3b91b4

If you're looking for a similar cool cyan shade, there are some better alternatives to Boston Blue Color. The Sparkling Cove color for instance is a darker and a bit more vibrant option, however this color has a mid cyan bias. Consider a lighter and more soft alternative called Blue Mist (#5bacc3) for more calm effect. Try Summer Air as it also a bit more vibrant and energetic.

Complementary Palette

#b35d3b is the best complementary color to Boston Blue. Warm red shades generally complement the cool cyan hues best as they are found on the opposite end of the color wheel. The most popular #3b91b4 complementary color is Brown Rust, as it offers maximum contrast and grab the viewer's attention.

Analogous Palette

The analogous palette of warm cyan, cool cyan, and cool blue colors offers a soft combination of similar cool shades. The analogous colors of Boston Blue are #3bb39a and #3b54b3. Thus found on the left and right of #3b91b4 on the color wheel with a 30° gap. Consider matching Keppel and Azure colors as they work well with Boston Blue.

Split-complementary Palette

The split-complementary Boston Blue palette consists of #b39a3b and #b33b54 colors. They can be found 30° apart on either side of the complementary color (#b35d3b). Try Tussock and Night Shadz colors in combination with #3b91b4, as they are not as contrasting as a complementary color, hence, giving more hue variety to make your design stand out.

Triadic Palette

The triadic palette of #3b91b4 offers a combination of cool yellow and warm magenta shades and equally high contrast between the three of them. Find triadic colors at the 120° distance from the Boston Blue. Thus Sushi and Medium Red Violet giving maximum hue separation to use all three together.

Square Palette

The square color palette of Boston Blue contains three additional colors. Thus, complementary Brown Rust, Vivid Violet, and Apple split by 90° on the color wheel. #3b91b4 square combo is a palette of cool cyan, cool magenta, warm red and warm green shades that work together well.

Tetradic Palette

The tetradic palette is a bit more complex than the square and has more of a rectangle shape. Boston Blue tetradic combo consists of warm red complementary color (#b35d3b) and two others. The Medium Red Violet is positioned 120° clockwise from the primary color and Chateau Green – 120° from the complementary Brown Rust. This palette is not recommended to use as-is. Try to tweak the saturation and brightness of #b33b91 and #3bb35e.

Conversion Table

In a RGB color space, hex #3b91b4 is made of 15% red, 38% green and 47% blue. In a HSL mode Boston Blue has a hue angle of 197.36°, a saturation of 50.63% and a lightness of 46.86%. In a CMYK space (used in printing only), hex #3b91b4 is made of 47.45% cyan, 13.73% magenta, 0% yellow and 29.41% black ink.

HEX #3b91b4
RGB Decimal rgb(59,145,180)
RGB Percentage 15%, 38%, 47%
CMYK 47.45, 13.73, 0, 29.41
HSL hsl(197.36,50.63%,46.86%)
HSV (or HSB) hsv(197.36,67.22%,70.59%)
CIE-LAB lab(56.5612,-14.5418,-25.8748)
XYZ xyz(20.1673,24.4759,46.8414)