Ultramarine

#100B8D

General Information about Ultramarine

Ultramarine, represented by the hex code #100B8D, is a deep blue color that evokes feelings of serenity, trust, and stability. It belongs to the blue color family and is often associated with the sky and the sea, representing depth and vastness. In color psychology, blue is often linked to calmness, intellect, and loyalty. Ultramarine, in particular, can convey a sense of formality and authority. This color is created by combining small amounts of red and green with a large amount of blue in the RGB color model. Due to its depth, it's frequently used in designs aiming to create a sense of sophistication and professionalism. Its unique shade stands out without being too overpowering, making it a favorable choice for various applications.

The color #100B8D, also known as Ultramarine, presents some accessibility challenges, especially in web design. Its dark hue results in a low contrast ratio against light backgrounds, which can make text difficult to read for users with visual impairments. To improve accessibility, consider using lighter text colors or applying a background color that provides sufficient contrast. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Tools like contrast checkers can help evaluate the contrast ratio between text and background colors. Additionally, avoid using this color as the sole indicator of interactive elements; supplement with labels or icons to ensure usability for all users, including those who are colorblind. When used thoughtfully, this color can enhance the visual appeal of the design while maintaining inclusivity.

Shades

Digital Color Formats

RGB
16 11 141
RGB16 11 141
Red
Green
Blue
HSL
242.31deg 85.53% 29.8%
242.3185.5329.8HSL
Hue
Saturation
Lightness
HWB
242.31deg 4.31% 44.71%
242.314.3144.71HWB
Hue
Whiteness
Blackness
hex#100B8D
rgb16 11 141
hsl242.31deg 85.53% 29.8%
cmyk88.65% 92.2% 0% 44.71%
hwb242.31deg 4.31% 44.71%
xyz-d650.05 0.02 0.25
oklch0.3044 0.1922 267.98
oklab0.3044 -0.01 -0.19
CMYK
88.65% 92.2% 0% 44.71%
88.6592.2044.71CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3044 0.1922 267.98
0.30440.1922267.98LCH
Lightness
Chroma
Hue
OKLAB
0.3044 -0.01 -0.19
0.3044-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons