Ultramarine

#101788

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #101788, is a deep and intense shade of blue. Historically, ultramarine was derived from the precious mineral lapis lazuli, making it a highly valued pigment, especially during the Renaissance. The name 'ultramarine' literally means 'beyond the sea,' referring to its origin from overseas sources. In the RGB color model, #101788 consists of 6.27% red, 8.63% green, and 53.33% blue. It is a cool color that evokes feelings of calmness, stability, and trust. In modern usage, ultramarine is used in various applications, from digital design to printing and painting. Its rich and saturated tone makes it an excellent choice for creating visual interest and depth.

The color #101788, a deep ultramarine, presents accessibility challenges due to its low luminance value. When used as a background color, it requires a very light text color to ensure sufficient contrast for readability, ideally exceeding the WCAG recommended contrast ratio of 4.5:1 for normal text and 3:1 for large text. Using a darker text color on this background would make it difficult for users, especially those with visual impairments, to perceive the content. Designers should carefully test color combinations using accessibility evaluation tools to ensure compliance. This color is best suited for decorative elements or as an accent color where legibility is not critical. Consider using it sparingly or pairing it with lighter shades to improve overall accessibility. Furthermore, avoid using this color for interactive elements without proper contrast as this will make the website unusable for many users. Using a lighter color, such as white, is recommended for text. The lightness of the text will help to ensure that the text is legible.

Shades

Digital Color Formats

RGB
16 23 136
RGB16 23 136
Red
Green
Blue
HSL
236.5deg 78.95% 29.8%
236.578.9529.8HSL
Hue
Saturation
Lightness
HWB
236.5deg 6.27% 46.67%
236.56.2746.67HWB
Hue
Whiteness
Blackness
hex#101788
rgb16 23 136
hsl236.5deg 78.95% 29.8%
cmyk88.24% 83.09% 0% 46.67%
hwb236.5deg 6.27% 46.67%
xyz-d650.05 0.03 0.24
oklch0.3099 0.1784 267.82
oklab0.3099 -0.01 -0.18
CMYK
88.24% 83.09% 0% 46.67%
88.2483.09046.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.03 0.24
0.050.030.24XYZ
X
Y
Z
OKLCH
0.3099 0.1784 267.82
0.30990.1784267.82LCH
Lightness
Chroma
Hue
OKLAB
0.3099 -0.01 -0.18
0.3099-0.01-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons