Ultramarine

#0A0F8F

General Information about #0A0F8F

The hexadecimal color code #0A0F8F represents a dark shade of blue, specifically classified as Ultramarine in some color naming systems. It is composed of 3.92% red, 5.88% green, and 56.08% blue. In the RGB color model, it is defined by the values Red: 10, Green: 15, and Blue: 143. In the CMYK color model, which is used in printing, its approximate composition is Cyan: 93%, Magenta: 89%, Yellow: 0%, and Black: 44%. This color is often associated with depth, stability, and trust. Ultramarine has a rich history, originally derived from the precious gemstone lapis lazuli. Its synthetic version made it more accessible, expanding its usage across art, design, and various other industries.

The color #0A0F8F, a deep shade of ultramarine, presents significant accessibility challenges. Its low luminance value of approximately 1% means that it provides very little contrast against a standard white background. This makes it difficult for users with visual impairments, including those with low vision or color blindness, to distinguish text or other elements rendered in this color. Web Content Accessibility Guidelines (WCAG) recommend a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. #0A0F8F fails to meet these standards against white and many other light backgrounds. To improve accessibility, consider using this color sparingly, pairing it with very light colors to achieve sufficient contrast, or using it for purely decorative purposes where legibility is not critical. Providing alternative styling options for users can further enhance accessibility.

Shades

Digital Color Formats

RGB
10 15 143
RGB10 15 143
Red
Green
Blue
HSL
237.74deg 86.93% 30%
237.7486.9330HSL
Hue
Saturation
Lightness
HWB
237.74deg 3.92% 43.92%
237.743.9243.92HWB
Hue
Whiteness
Blackness
hex#0A0F8F
rgb10 15 143
hsl237.74deg 86.93% 30%
cmyk93.01% 89.51% 0% 43.92%
hwb237.74deg 3.92% 43.92%
xyz-d650.05 0.02 0.26
oklch0.3084 0.1936 266.36
oklab0.3084 -0.01 -0.19
CMYK
93.01% 89.51% 0% 43.92%
93.0189.51043.92CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.26
0.050.020.26XYZ
X
Y
Z
OKLCH
0.3084 0.1936 266.36
0.30840.1936266.36LCH
Lightness
Chroma
Hue
OKLAB
0.3084 -0.01 -0.19
0.3084-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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