Cerulean Blue

#214DBF

About Cerulean Blue

Cerulean Blue, represented by the hex code #214DBF, is a deep, vibrant shade of blue that evokes feelings of tranquility and sophistication. This color is often associated with the ocean and sky, making it a popular choice in design fields aiming to convey a sense of calmness and serenity. In color theory, Cerulean Blue sits between cyan and blue on the color wheel, exhibiting a strong presence and visual impact. The name 'cerulean' itself is derived from the Latin word 'caeruleus,' meaning 'dark blue' or 'sky-blue.' The color's hex code is composed of the red component '21', green component '4D', and blue component 'BF', indicating that the blue element is the most dominant. The color can be used in a wide range of applications, from web design to fashion, due to its appealing aesthetics and visual balance.

The color #214DBF, also known as Cerulean Blue, presents some accessibility challenges due to its relatively low luminance. When used as a foreground color, it requires careful consideration of the background color to ensure sufficient contrast for readability, especially for users with visual impairments. A light background is essential to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratios. Specifically, for small text, a contrast ratio of at least 4.5:1 is recommended, while for large text and graphics, a ratio of 3:1 is necessary. Using tools like contrast checkers can help determine if the color combination meets these standards, ensuring that content is accessible to a wider audience, including those with color blindness or low vision. Avoiding the use of #214DBF for critical information without sufficient contrast is highly recommended.

Shades

Digital Color Formats

RGB
33 77 191
RGB33 77 191
Red
Green
Blue
HSL
223.29deg 70.54% 43.92%
223.2970.5443.92HSL
Hue
Saturation
Lightness
HWB
223.29deg 12.94% 25.1%
223.2912.9425.1HWB
Hue
Whiteness
Blackness
hex#214DBF
rgb33 77 191
hsl223.29deg 70.54% 43.92%
cmyk82.72% 59.69% 0% 25.1%
hwb223.29deg 12.94% 25.1%
xyz-d650.13 0.09 0.5
oklch0.4649 0.1856 264.24
oklab0.4649 -0.02 -0.18
CMYK
82.72% 59.69% 0% 25.1%
82.7259.69025.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.13 0.09 0.5
0.130.090.5XYZ
X
Y
Z
OKLCH
0.4649 0.1856 264.24
0.46490.1856264.24LCH
Lightness
Chroma
Hue
OKLAB
0.4649 -0.02 -0.18
0.4649-0.02-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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