Ultramarine

#170C8C

General Information about Ultramarine

The color #170C8C, also known as Ultramarine, is a deep shade of blue, evoking feelings of depth, sophistication, and mystery. It belongs to the blue color family, which is often associated with calmness, stability, and trust. In the RGB color model, #170C8C is composed of 9.02% red, 4.71% green, and 54.9% blue. This composition indicates a strong presence of blue pigment, resulting in its characteristic deep hue. In the CMYK color model, it consists of 84% cyan, 91% magenta, 0% yellow, and 45% black. This indicates a color that will reproduce well on digital displays and in print. The hexadecimal color code provides a standardized way to represent this color across various platforms and applications, making it easy to reproduce consistently.

The color #170C8C, a deep ultramarine, presents significant accessibility challenges, especially for users with visual impairments. Its low luminance of approximately 3% means that it offers very little contrast against common background colors like white, making text rendered in this color difficult to read. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. #170C8C fails to meet these requirements against most light backgrounds. To improve accessibility, consider using lighter shades of blues or pairing it with a very light background color to enhance contrast. Additionally, avoid using it for essential UI elements without sufficient contrast, as it can impede usability for many users. Implementing text shadows or outlines can also help.

Shades

Digital Color Formats

RGB
23 12 140
RGB23 12 140
Red
Green
Blue
HSL
245.16deg 84.21% 29.8%
245.1684.2129.8HSL
Hue
Saturation
Lightness
HWB
245.16deg 4.71% 45.1%
245.164.7145.1HWB
Hue
Whiteness
Blackness
hex#170C8C
rgb23 12 140
hsl245.16deg 84.21% 29.8%
cmyk83.57% 91.43% 0% 45.1%
hwb245.16deg 4.71% 45.1%
xyz-d650.05 0.02 0.25
oklch0.3071 0.1887 270.33
oklab0.3071 0 -0.19
CMYK
83.57% 91.43% 0% 45.1%
83.5791.43045.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3071 0.1887 270.33
0.30710.1887270.33LCH
Lightness
Chroma
Hue
OKLAB
0.3071 0 -0.19
0.30710-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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