Ultramarine

#1500A8

General Information about Ultramarine

The hex color #1500A8, also known as Ultramarine, is a deep, saturated shade of blue. In the RGB color model, it is composed of 8.24% red, 0% green, and 65.88% blue. This color is significantly skewed towards the blue end of the spectrum, resulting in its intense and characteristic hue. Ultramarine has a long and storied history, originally derived from the precious mineral lapis lazuli. The name itself means 'beyond the sea,' reflecting its origin from stones imported into Europe from distant lands. Historically, it was one of the most expensive pigments used in painting, reserved for important figures and religious artwork, often symbolizing royalty and holiness. Today, synthetic versions of Ultramarine are widely available, making it accessible for a variety of applications beyond fine art.

The hex color #1500A8, also known as Ultramarine, presents significant accessibility challenges, primarily due to its extremely low luminance. Its very dark shade of blue provides insufficient contrast against lighter backgrounds commonly used for text or interactive elements. According to WCAG (Web Content Accessibility Guidelines), a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text against its background. Ultramarine is unlikely to meet these standards when paired with typical light colors like white or pale yellow. Therefore, when using #1500A8, careful consideration must be given to its contrast ratio against the background. Employing accessibility evaluation tools is crucial to ensure compliance. Furthermore, providing alternative text descriptions for images using this color and offering high-contrast themes for users with visual impairments are essential practices. Avoid using this color for crucial UI elements without appropriate contrast adjustments.

Shades

Digital Color Formats

RGB
21 0 168
RGB21 0 168
Red
Green
Blue
HSL
247.5 100% 32.94%
247.510032.94HSL
Hue
Saturation
Lightness
HWB
247.5 0% 34.12%
247.5034.12HWB
Hue
Whiteness
Blackness
hex#1500A8
rgb21 0 168
hsl247.5 100% 32.94%
cmyk87.5% 100% 0% 34.12%
hwb247.5 0% 34.12%
xyz7.38 2.99 37.23
CMYK
87.5% 100% 0% 34.12%
87.5100034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.38 2.99 37.23
7.382.9937.23XYZ
X
Y
Z

Alternative colors

Applications

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