Ultramarine

#0D178A

General Information about Ultramarine

The color #0D178A, commonly known as Ultramarine, is a deep and intense shade of blue. It belongs to the blue color family and is characterized by its rich, saturated hue. In the RGB color model, #0D178A consists of 5.1% red, 9% green, and 54.1% blue. Ultramarine's name originates from the Latin 'ultramarinus,' meaning 'beyond the sea,' as it was originally derived from the precious gemstone lapis lazuli, which was imported from overseas. This historical association contributes to the color's perception as luxurious and sophisticated. Its hex code #0D178A makes it easily representable in digital formats, allowing for consistent use across various platforms and design applications. Ultramarine continues to be a popular choice for designers seeking to convey depth, stability, and a touch of elegance in their projects.

The color #0D178A, also known as Ultramarine, presents significant accessibility challenges, primarily due to its low luminance. With a dark hue, it offers insufficient contrast when paired with similarly dark colors, making text or interface elements difficult to read for users, especially those with visual impairments. To ensure accessibility, it's crucial to use this color with very light backgrounds like white or very pale yellows. Furthermore, designers should adhere to WCAG guidelines, specifically concerning contrast ratios. A contrast ratio of at least 4.5:1 is recommended for normal-sized text and 3:1 for large text. Using tools to measure contrast ratios is highly advisable. If Ultramarine is essential to the design, consider using it sparingly for decorative elements rather than crucial text or interactive components. Careful consideration and testing with accessibility evaluation tools can help mitigate potential usability issues.

Shades

Digital Color Formats

RGB
13 23 138
RGB13 23 138
Red
Green
Blue
HSL
235.2deg 82.78% 29.61%
235.282.7829.61HSL
Hue
Saturation
Lightness
HWB
235.2deg 5.1% 45.88%
235.25.145.88HWB
Hue
Whiteness
Blackness
hex#0D178A
rgb13 23 138
hsl235.2deg 82.78% 29.61%
cmyk90.58% 83.33% 0% 45.88%
hwb235.2deg 5.1% 45.88%
xyz-d650.05 0.03 0.24
oklch0.3113 0.1815 266.95
oklab0.3113 -0.01 -0.18
CMYK
90.58% 83.33% 0% 45.88%
90.5883.33045.88CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.03 0.24
0.050.030.24XYZ
X
Y
Z
OKLCH
0.3113 0.1815 266.95
0.31130.1815266.95LCH
Lightness
Chroma
Hue
OKLAB
0.3113 -0.01 -0.18
0.3113-0.01-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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