Ultramarine

#15118A

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #15118A, is a deep, vivid blue with historical significance rooted in the pigment derived from lapis lazuli. Its name, literally meaning "beyond the sea," reflects its origin, as lapis lazuli was historically imported from Central Asia. This color is characterized by its strong blue hue with slight violet undertones, contributing to its richness and depth. In color theory, Ultramarine is associated with feelings of tranquility, stability, and sophistication, making it a popular choice in various applications, from art and design to branding and fashion. Understanding its properties and associations allows for effective use in visual communication.

The color #15118A, also known as Ultramarine, presents some accessibility challenges, especially concerning text and interactive elements. With a low luminance value, it can be difficult to read text rendered in this color against a white or light background. Therefore, when using #15118A for text, it is crucial to pair it with a very light color such as white or a pale yellow to ensure sufficient contrast, ideally exceeding the WCAG recommended contrast ratio of 4.5:1 for normal text and 3:1 for large text. Similarly, when using this color for interactive elements like buttons or links, ensure that the color contrast is sufficient to provide clear affordance to users. Also, consider providing additional visual cues, such as underlines or borders, to enhance usability for users with visual impairments. Testing the design with accessibility evaluation tools is recommended to guarantee compliance with accessibility standards.

Shades

Digital Color Formats

RGB
21 17 138
RGB21 17 138
Red
Green
Blue
HSL
241.98 78.06% 30.39%
241.9878.0630.39HSL
Hue
Saturation
Lightness
HWB
241.98 6.67% 45.88%
241.986.6745.88HWB
Hue
Whiteness
Blackness
hex#15118A
rgb21 17 138
hsl241.98 78.06% 30.39%
cmyk84.78% 87.68% 0% 45.88%
hwb241.98 6.67% 45.88%
xyz5.1 2.4 24.24
CMYK
84.78% 87.68% 0% 45.88%
84.7887.68045.88CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.1 2.4 24.24
5.12.424.24XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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