Ultramarine

#1B1289

General Information about Ultramarine

The hex color #1B1289, often referred to as Ultramarine, is a deep, saturated shade of blue. It is composed of 10.6% red, 7.1% green, and 53.7% blue. In the RGB color space, it is closer to pure blue than pure red or green. Ultramarine's historical significance stems from its use in fine art, where it was derived from the semi-precious stone lapis lazuli. Due to the high cost of lapis lazuli, ultramarine pigment was once more valuable than gold. Today, synthetic ultramarine is readily available, making it a popular choice in various applications. Its rich, intense hue evokes feelings of depth, tranquility, and sophistication. In web design and graphic design, #1B1289 can be used to create a sense of authority, trust, and elegance, often used in branding and designs related to technology, finance, or education.

The color #1B1289, a deep ultramarine, presents significant accessibility challenges, especially when used as a background color for text. Its low lightness value (close to black) necessitates very light text to ensure sufficient contrast. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. When pairing this color with text, it's crucial to use a color contrast checker to verify compliance. Furthermore, avoid using this color for crucial UI elements without proper contrast, as it can severely impact usability for users with visual impairments. Consider providing alternative color themes or options for users to customize the display for optimal readability. This dark color might be problematic for users with low vision or color blindness if contrast is not carefully considered.

Shades

Digital Color Formats

RGB
27 18 137
RGB27 18 137
Red
Green
Blue
HSL
244.54 76.77% 30.39%
244.5476.7730.39HSL
Hue
Saturation
Lightness
HWB
244.54 7.06% 46.27%
244.547.0646.27HWB
Hue
Whiteness
Blackness
hex#1B1289
rgb27 18 137
hsl244.54 76.77% 30.39%
cmyk80.29% 86.86% 0% 46.27%
hwb244.54 7.06% 46.27%
xyz5.18 2.47 23.87
CMYK
80.29% 86.86% 0% 46.27%
80.2986.86046.27CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.18 2.47 23.87
5.182.4723.87XYZ
X
Y
Z

Alternative colors

Applications

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