Ultramarine

#100B90

General Information about Ultramarine

The hexadecimal color #100B90, also known as Ultramarine, is a deep shade of blue. In the RGB color model, it is composed of 6.27% red, 4.31% green, and 56.47% blue. In the CMYK color model, it is composed of 89% cyan, 92% magenta, 0% yellow, and 44% black. This color is often associated with depth, stability, and intelligence. Historically, ultramarine pigment was made from ground lapis lazuli, a rare and expensive stone, making it highly valued in art. Now, it is synthetically produced. It is used in graphic design, web design, and other visual mediums to convey a sense of sophistication and trust.

The color #100B90, also known as Ultramarine, presents some accessibility challenges. Its dark hue means it requires light-colored text for sufficient contrast. 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 to meet AA compliance. When using Ultramarine as a background, ensure that text is white or a very light shade of yellow or gray to meet these standards. This color may not be suitable for users with low vision if proper contrast is not maintained. Also, avoid using this color to convey important information without redundant cues, as color blindness affects a significant portion of the population. Consider providing textual or symbolic alternatives alongside color cues to ensure inclusivity.

Shades

Digital Color Formats

RGB
16 11 144
RGB16 11 144
Red
Green
Blue
HSL
242.26 85.81% 30.39%
242.2685.8130.39HSL
Hue
Saturation
Lightness
HWB
242.26 4.31% 43.53%
242.264.3143.53HWB
Hue
Whiteness
Blackness
hex#100B90
rgb16 11 144
hsl242.26 85.81% 30.39%
cmyk88.89% 92.36% 0% 43.53%
hwb242.26 4.31% 43.53%
xyz5.37 2.36 26.56
CMYK
88.89% 92.36% 0% 43.53%
88.8992.36043.53CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.37 2.36 26.56
5.372.3626.56XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025