Ultramarine

#000D9B

General Information about Ultramarine

The hex color #000D9B, also known as Ultramarine, is a deep and intense shade of blue. It belongs to the blue color family and is characterized by its strong presence and depth. In the RGB color model, it is composed of 0% red, 5.1% green, and 61.2% blue. This specific combination creates a color that evokes feelings of trust, stability, and sophistication. Ultramarine, in its pigment form, was historically derived from lapis lazuli, making it a prized and expensive color used in art and decoration. Its association with royalty and importance continues to this day. The color is often used to represent the depths of the ocean or the vastness of the night sky.

The color #000D9B, a deep ultramarine, presents significant accessibility challenges. Its very low lightness value (around 2%) means it offers minimal contrast against light backgrounds, making text or UI elements rendered in this color difficult to read for users with visual impairments. According to WCAG guidelines, it would fail most contrast ratio tests against white or light gray. To improve accessibility, consider using this color sparingly and always paired with very light colors (white or very light grays) for text and interactive elements. Alternatively, use a much lighter tint of ultramarine or a completely different, higher-contrast color palette to ensure readability for all users, including those with low vision or color blindness. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text.

Shades

Digital Color Formats

RGB
0 13 155
RGB0 13 155
Red
Green
Blue
HSL
234.97 100% 30.39%
234.9710030.39HSL
Hue
Saturation
Lightness
HWB
234.97 0% 39.22%
234.97039.22HWB
Hue
Whiteness
Blackness
hex#000D9B
rgb0 13 155
hsl234.97 100% 30.39%
cmyk100% 91.61% 0% 39.22%
hwb234.97 0% 39.22%
xyz6.06 2.65 31.2
CMYK
100% 91.61% 0% 39.22%
10091.61039.22CMYK
Cyan
Magenta
Yellow
Key
XYZ
6.06 2.65 31.2
6.062.6531.2XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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