Ultramarine

#0A008B

General Information about Ultramarine

The color #0A008B, commonly known as Ultramarine, is a deep and captivating shade of blue. It belongs to the blue color family and is characterized by its strong presence and association with depth, trust, and stability. In the RGB color model, it consists of 3.92% red, 0% green, and 54.51% blue. Ultramarine has a long history, originally derived from the precious stone lapis lazuli, making it a highly valued pigment in art and decoration. Its name, meaning 'beyond the sea,' reflects its origin from stones imported into Europe from Asia. Today, it is synthetically produced and widely used in various applications, from paints and coatings to plastics and textiles. Its rich hue and versatile nature make it a popular choice across different industries and creative fields.

The hex color #0A008B, also known as Ultramarine, presents several accessibility considerations for web developers. Given its deep, dark hue, it's crucial to ensure sufficient contrast when used as a background or text color. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #0A008B for text, pairing it with a light color like white (#FFFFFF) or a light yellow (#FFFFE0) is advisable to meet accessibility standards. Avoid using it with similarly dark colors, as this can make the text illegible for users with visual impairments. Additionally, consider providing alternative styling options that allow users to adjust the color scheme to their preferences, enhancing overall usability. Proper use of ARIA attributes can further improve accessibility by providing screen readers with meaningful context.

Shades

Digital Color Formats

RGB
10 0 139
RGB10 0 139
Red
Green
Blue
HSL
244.32deg 100% 27.25%
244.3210027.25HSL
Hue
Saturation
Lightness
HWB
244.32deg 0% 45.49%
244.32045.49HWB
Hue
Whiteness
Blackness
hex#0A008B
rgb10 0 139
hsl244.32deg 100% 27.25%
cmyk92.81% 100% 0% 45.49%
hwb244.32deg 0% 45.49%
xyz-d650.05 0.02 0.25
oklch0.2912 0.197 266.56
oklab0.2912 -0.01 -0.2
CMYK
92.81% 100% 0% 45.49%
92.81100045.49CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.2912 0.197 266.56
0.29120.197266.56LCH
Lightness
Chroma
Hue
OKLAB
0.2912 -0.01 -0.2
0.2912-0.01-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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