Ultramarine

#1511A3

General Information about Ultramarine

The hexadecimal color #1511A3, also known as Ultramarine, is a dark, saturated blue. In the RGB color model, it is composed of 8.24% red, 6.67% green, and 63.92% blue. In the CMYK color model, it consists of 87.17% cyan, 89.55% magenta, 0% yellow, and 36.08% black. This color is often associated with depth, stability, and trust. Ultramarine has a rich history, originally derived from the rare and expensive mineral lapis lazuli. Because of its cost, it was often reserved for the most important figures in paintings. Today, synthetic ultramarine is widely available, but the color still carries a sense of luxury and sophistication. Its hex code, #1511A3, allows for precise reproduction across various digital platforms, ensuring consistency in branding and design projects.

The color #1511A3, a deep ultramarine, presents significant accessibility challenges, especially in web design. Its low luminance value results in poor contrast against light backgrounds, potentially making text or interactive elements difficult to read for users with visual impairments. According to WCAG guidelines, sufficient contrast ratios are essential for ensuring readability. To improve accessibility, it is crucial to pair this color with very light shades, such as white or very pale yellow, to achieve an acceptable contrast ratio. Conversely, using dark text on an ultramarine background should be avoided. Employing tools that check color contrast ratios can help designers identify and rectify accessibility issues before implementation. Ensuring proper color contrast enhances the user experience for individuals with low vision or color blindness, promoting inclusivity.

Shades

Digital Color Formats

RGB
21 17 163
RGB21 17 163
Red
Green
Blue
HSL
241.64 81.11% 35.29%
241.6481.1135.29HSL
Hue
Saturation
Lightness
HWB
241.64 6.67% 36.08%
241.646.6736.08HWB
Hue
Whiteness
Blackness
hex#1511A3
rgb21 17 163
hsl241.64 81.11% 35.29%
cmyk87.12% 89.57% 0% 36.08%
hwb241.64 6.67% 36.08%
xyz7.12 3.2 34.89
CMYK
87.12% 89.57% 0% 36.08%
87.1289.57036.08CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.12 3.2 34.89
7.123.234.89XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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