Ultramarine

#081590

General Information About Ultramarine

Ultramarine, represented by the hexadecimal color code #081590, is a deep blue pigment originally derived from the mineral lapis lazuli. This color has a long and storied history, prized for its vibrant hue and used extensively in art and decoration since the Middle Ages. The name "Ultramarine" literally means "beyond the sea," reflecting the fact that the pigment was imported into Europe from mines in Asia. Chemically, modern ultramarine is a complex sodium aluminosilicate with sulfur, responsible for its characteristic blue color. In the RGB color model, #081590 is composed of 3.14% red, 8.24% green, and 56.47% blue. In the CMYK color model, it consists of 95% cyan, 85% magenta, 0% yellow, and 44% black. This color is often associated with depth, stability, and authority, making it a popular choice in branding and design.

The color #081590, also known as Ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value of approximately 3% means that text rendered in this color against a white background, or vice versa, will have a very low contrast ratio. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text to meet AA compliance. Ultramarine, failing to meet these ratios, would be difficult to read for many users, including those with low vision or color blindness. To improve accessibility, consider using Ultramarine sparingly, primarily for decorative elements rather than essential text. When it is necessary to use Ultramarine for text, ensure that it is paired with a very light color such as white or a very dark color such as black to provide sufficient contrast and improve readability for all users.

Shades

Digital Color Formats

RGB
8 21 144
RGB8 21 144
Red
Green
Blue
HSL
234.26deg 89.47% 29.8%
234.2689.4729.8HSL
Hue
Saturation
Lightness
HWB
234.26deg 3.14% 43.53%
234.263.1443.53HWB
Hue
Whiteness
Blackness
hex#081590
rgb8 21 144
hsl234.26deg 89.47% 29.8%
cmyk94.44% 85.42% 0% 43.53%
hwb234.26deg 3.14% 43.53%
xyz-d650.05 0.03 0.27
oklch0.3152 0.1911 265.81
oklab0.3152 -0.01 -0.19
CMYK
94.44% 85.42% 0% 43.53%
94.4485.42043.53CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.03 0.27
0.050.030.27XYZ
X
Y
Z
OKLCH
0.3152 0.1911 265.81
0.31520.1911265.81LCH
Lightness
Chroma
Hue
OKLAB
0.3152 -0.01 -0.19
0.3152-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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