Ultramarine

#15148A

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #15148A, is a deep and rich shade of blue. This color is often associated with royalty, intelligence, and stability. It derives its name from the Latin 'ultramarinus,' meaning 'beyond the sea,' as the original pigment was made from lapis lazuli imported from far-off lands. In the RGB color model, #15148A consists of 8.24% red, 7.84% green, and 54.12% blue. In the CMYK color model, it is composed of 85% cyan, 86% magenta, 0% yellow, and 46% black. Ultramarine has a wavelength of approximately 464 nm. Due to its nature it is also referred to as primary blue in some color models.

The hex color #15148A, also known as Ultramarine, presents some accessibility challenges, particularly concerning color contrast. When used as a background color, it's crucial to pair it with text that is sufficiently light to ensure readability. White or very light shades of gray would be appropriate choices. Avoid using dark or muted colors for text or interactive elements on an Ultramarine background, as this could result in poor contrast and make it difficult for users, especially those with visual impairments, to perceive the content. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Thoroughly testing color combinations with accessibility tools is essential to ensure compliance and create an inclusive user experience. Considering alternatives or modifications to the color, such as lightening it slightly, can also improve accessibility.

Shades

Digital Color Formats

RGB
21 20 138
RGB21 20 138
Red
Green
Blue
HSL
240.51deg 74.68% 30.98%
240.5174.6830.98HSL
Hue
Saturation
Lightness
HWB
240.51deg 7.84% 45.88%
240.517.8445.88HWB
Hue
Whiteness
Blackness
hex#15148A
rgb21 20 138
hsl240.51deg 74.68% 30.98%
cmyk84.78% 85.51% 0% 45.88%
hwb240.51deg 7.84% 45.88%
xyz-d650.05 0.02 0.24
oklch0.311 0.1819 269.44
oklab0.311 0 -0.18
CMYK
84.78% 85.51% 0% 45.88%
84.7885.51045.88CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.24
0.050.020.24XYZ
X
Y
Z
OKLCH
0.311 0.1819 269.44
0.3110.1819269.44LCH
Lightness
Chroma
Hue
OKLAB
0.311 0 -0.18
0.3110-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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