Ultramarine

#0A1891

General Information

The color #0A1891, known as Ultramarine, is a deep, saturated shade of blue. In the RGB color model, it consists of 0 red, 24 green, and 145 blue. Its hexadecimal representation, #0A1891, makes it readily usable in web design and digital art. Ultramarine's rich hue evokes feelings of serenity, depth, and intelligence. Historically, ultramarine pigment was derived from the precious stone lapis lazuli, making it one of the most expensive and sought-after pigments for centuries. Its association with royalty and religious figures further solidified its prestigious status. Today, synthetic ultramarine provides an affordable alternative, allowing widespread use of this captivating color. Ultramarine remains a popular choice across various fields, including art, design, and fashion, for its ability to convey sophistication and elegance.

The hex color #0A1891, also known as Ultramarine, presents some accessibility considerations for web developers. Due to its deep, saturated hue, it's crucial to ensure sufficient contrast when used as either a background or text color. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Pairing #0A1891 with lighter colors such as whites (#FFFFFF) or lighter shades of yellow or green can help achieve this. Avoid using it with similarly dark colors, as the contrast may be insufficient for users with visual impairments. Additionally, consider providing alternative visual cues beyond color alone to convey information, as colorblind users may struggle to distinguish #0A1891 from other dark colors. Thorough testing with accessibility tools and real users is recommended to ensure optimal usability.

Shades

Digital Color Formats

RGB
10 24 145
RGB10 24 145
Red
Green
Blue
HSL
233.78 87.1% 30.39%
233.7887.130.39HSL
Hue
Saturation
Lightness
HWB
233.78 3.92% 43.14%
233.783.9243.14HWB
Hue
Whiteness
Blackness
hex#0A1891
rgb10 24 145
hsl233.78 87.1% 30.39%
cmyk93.1% 83.45% 0% 43.14%
hwb233.78 3.92% 43.14%
xyz5.56 2.76 27.03
CMYK
93.1% 83.45% 0% 43.14%
93.183.45043.14CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.56 2.76 27.03
5.562.7627.03XYZ
X
Y
Z

Alternative colors

Applications

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