Cerulean Blue

#274DAF

General Information about Cerulean Blue

Cerulean blue, represented by the hexadecimal color code #274DAF, is a medium-dark shade of blue with a strong presence. It is composed of 15.3% red, 30.2% green, and 68.6% blue. In the RGB color model, this translates to R:39, G:77, B:175. Cerulean blue derives its name from cerulean, which refers to the color of the sky on a clear day. This color is often associated with calmness, serenity, and stability. Its slightly desaturated quality makes it a versatile choice for various design applications, including web design, graphic design, and interior decoration. Cerulean blue is not a primary or secondary color, but a tertiary color, blending blue with a hint of green, lending to its unique appearance and distinctive character among the broader blue color palette. It is lighter than navy but darker than sky blue.

The color #274DAF, a deep cerulean blue, presents some accessibility considerations for web developers. When used as a foreground color, it requires careful selection of a contrasting background color to ensure readability, especially for users with visual impairments. A light yellow (#FFFAAD) or beige (#F5F5DC) could serve as good background choices. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. Therefore, it's crucial to verify the contrast ratio using online tools before deploying this color in a user interface. Moreover, avoid using this color for critical interactive elements without sufficient contrast, as it may not be easily discernible for all users. In data visualization, use #274DAF judiciously, pairing it with distinct colors to represent different data categories effectively.

Shades

Digital Color Formats

RGB
39 77 175
RGB39 77 175
Red
Green
Blue
HSL
223.24deg 63.55% 41.96%
223.2463.5541.96HSL
Hue
Saturation
Lightness
HWB
223.24deg 15.29% 31.37%
223.2415.2931.37HWB
Hue
Whiteness
Blackness
hex#274DAF
rgb39 77 175
hsl223.24deg 63.55% 41.96%
cmyk77.71% 56% 0% 31.37%
hwb223.24deg 15.29% 31.37%
xyz-d650.11 0.09 0.42
oklch0.4535 0.1627 264.65
oklab0.4535 -0.02 -0.16
CMYK
77.71% 56% 0% 31.37%
77.7156031.37CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.11 0.09 0.42
0.110.090.42XYZ
X
Y
Z
OKLCH
0.4535 0.1627 264.65
0.45350.1627264.65LCH
Lightness
Chroma
Hue
OKLAB
0.4535 -0.02 -0.16
0.4535-0.02-0.16LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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