All About Color Boston Blue

#3B91B4

Boston Blue is a vibrant, medium blue, resembling the color of the Boston city flag. It's a bold and confident color, perfect for creating a strong and impactful space.

About Boston Blue

Boston Blue is a medium blue color with the hex code #3B91B4. In RGB it is red 59, green 145, blue 180; in HSL it is hue 197°, saturation 51%, lightness 47%; in CMYK it is 67%, 19%, 0%, 29%. Its contrast ratio is 3.56:1 on white and 5.90:1 on black.

#3B91B4 Color Conversion

Hex triplet3B, 91, B4
CMYK67.22%, 19.44%, 0.00%, 29.41%
RGB Decimal59, 145, 180
HSL197°, 51%, 47%
RGB Octal73, 221, 264
HSV (HSB)197.36°, 67.22%, 70.59%
RGB Binary111011, 10010001, 10110100
CIE-L*AB56.56, -14.54, -25.87
RGB Percent23.14%, 56.86%, 70.59%
CIE-L*CH56.56, 29.68, 240.66
XYZ20.17, 24.48, 46.84
CIE-L*UV56.56, -33.09, -37.49
xyY0.22, 0.27, 24.48
Hunter-Lab49.47, -13.81, -21.50
RYB23.14%, 42.85%, 70.59%

Color Accessibility Scores

#3B91B4 on a dark background: contrast 5.90:1, passes WCAG AA.
#3B91B4 on a light background: contrast 3.56:1, passes WCAG AA for large text only.

Color Shades

Tints and shades of Boston Blue, from lightest to darkest. Each swatch links to its own color page.

Related Palettes

Harmonious five-color palettes built around Boston Blue. Open any of them in the Muzli palette generator.

Complementary palette

#3B91B4 · #78B9D3 · #245A70 · #B55D3B · #D39278

Analogous palette

#3BB55D · #3BB59A · #3B91B4 · #3B55B5 · #5D3BB5

Triadic palette

#3B91B4 · #B53B92 · #92B53B · #78B9D3 · #D378B9

Tetradic palette

#3B91B4 · #9A3BB5 · #B55D3B · #55B53B · #245A70

Monochromatic palette

#153541 · #28647B · #3B91B4 · #6DB4D0 · #A6D1E2

Generate more palettes containing Boston Blue · Browse all color names

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