Cerulean Blue

#2B4DBB

General Information About Cerulean Blue

The hexadecimal color #2B4DBB, also known as Cerulean Blue, is a deep shade of blue that falls within the broader range of azure and sky-blue hues. It is created by combining specific proportions of red, green, and blue light, as defined by the RGB color model. In this case, #2B4DBB consists of 17.1% red, 30.2% green, and 73.3% blue. The name 'Cerulean' is derived from the Latin word 'caeruleus,' meaning 'dark blue,' and is often associated with the color of the sky on a clear day. This color evokes feelings of calmness, tranquility, and stability. It is widely used in various fields, from graphic design and web development to fashion and interior decoration, due to its appealing aesthetic and psychological impact. Different shades and tints of cerulean blue can create varied moods and effects, making it a versatile choice for creative projects.

The hex color #2B4DBB, a shade of cerulean blue, presents some accessibility considerations for web design. Its relatively low luminance can create challenges when used as text against a white background, potentially failing WCAG contrast ratio requirements. To ensure readability, it's advisable to pair this color with lighter shades of yellow, white, or very light grays for text. Conversely, using #2B4DBB as a background color requires careful selection of foreground text colors to maintain sufficient contrast. Tools like contrast checkers can be invaluable in determining compliant color combinations. Thoughtful application of this color, considering both foreground and background pairings, can enhance the user experience for individuals with visual impairments. Use cases where the color is decorative and carries no important information might require less stringent contrast considerations. When in doubt, err on the side of higher contrast.

Shades

Digital Color Formats

RGB
43 77 187
RGB43 77 187
Red
Green
Blue
HSL
225.83deg 62.61% 45.1%
225.8362.6145.1HSL
Hue
Saturation
Lightness
HWB
225.83deg 16.86% 26.67%
225.8316.8626.67HWB
Hue
Whiteness
Blackness
hex#2B4DBB
rgb43 77 187
hsl225.83deg 62.61% 45.1%
cmyk77.01% 58.82% 0% 26.67%
hwb225.83deg 16.86% 26.67%
xyz-d650.13 0.09 0.48
oklch0.4652 0.1778 266.31
oklab0.4652 -0.01 -0.18
CMYK
77.01% 58.82% 0% 26.67%
77.0158.82026.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.13 0.09 0.48
0.130.090.48XYZ
X
Y
Z
OKLCH
0.4652 0.1778 266.31
0.46520.1778266.31LCH
Lightness
Chroma
Hue
OKLAB
0.4652 -0.01 -0.18
0.4652-0.01-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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