Ultramarine

#00009B

General Information about Ultramarine

Ultramarine, represented by the hex code #00009b, is a deep and intense shade of blue. It derives its name from the Latin 'ultramarinus,' meaning 'beyond the sea,' as it was originally made from the precious gemstone lapis lazuli imported from Asia. Historically, Ultramarine was highly valued and used by Renaissance painters for its vibrant and lasting color, particularly in depictions of the Virgin Mary's robes. In modern color theory, Ultramarine is considered a cool color, often associated with feelings of calmness, stability, and wisdom. Its RGB values are R: 0, G: 0, B: 155, indicating a strong presence of blue and an absence of red and green. This results in a pure and saturated blue hue that can evoke a sense of depth and sophistication. It is widely used in graphic design, web design, and various other creative fields.

The hex color #00009b, a deep shade of blue also known as Ultramarine, presents significant accessibility challenges. Its low luminance value results in poor contrast against light backgrounds, making it difficult for users with visual impairments to read text or distinguish interface elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Ultramarine often falls short of these recommendations when paired with standard white or light-colored backgrounds. To improve accessibility, consider using a lighter tint of blue or pairing it with a much lighter color such as white or yellow to reach an adequate contrast ratio. Furthermore, avoid using #00009b as the sole indicator of interactive elements like links or buttons; supplement it with clear labels or visual cues. Ensuring sufficient color contrast is crucial for inclusive design, enabling users of all abilities to perceive and interact with web content effectively. Use color contrast checkers to test the combination before publishing.

Shades

Digital Color Formats

RGB
0 0 155
RGB0 0 155
Red
Green
Blue
HSL
240 100% 30.39%
24010030.39HSL
Hue
Saturation
Lightness
HWB
240 0% 39.22%
240039.22HWB
Hue
Whiteness
Blackness
hex#00009B
rgb0 0 155
hsl240 100% 30.39%
cmyk100% 100% 0% 39.22%
hwb240 0% 39.22%
xyz5.92 2.37 31.16
CMYK
100% 100% 0% 39.22%
100100039.22CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.92 2.37 31.16
5.922.3731.16XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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