Ultramarine

#180890

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #180890, is a deep and rich blue color. It is a dark shade of blue, evoking feelings of sophistication, depth, and mystery. Historically, Ultramarine was a pigment derived from the precious mineral lapis lazuli, making it highly valued and reserved for important artworks and religious paintings. Its name literally means 'beyond the sea,' referring to its origin from stones imported into Europe from Asia. Today, synthetic Ultramarine pigments are widely available, retaining the color's characteristic beauty and depth without the expense of natural sources. Ultramarine blue is often associated with royalty, intellect, and stability.

The contrast ratio of #180890 against white is approximately 11.7:1, which exceeds the WCAG AAA requirements for text and non-text contrast. This makes it highly accessible for users with visual impairments. When used as a background color, white text would provide excellent readability. However, when paired with black text, the contrast ratio drops to approximately 1.8:1, which does not meet accessibility standards. Therefore, black text on an Ultramarine background should be avoided. Consider using lighter shades of gray or yellow to enhance readability. Ensure that any interactive elements using Ultramarine, such as buttons or links, have sufficient contrast with their surrounding elements to be easily identifiable and usable by all users, including those with color vision deficiencies.

Shades

Digital Color Formats

RGB
24 8 144
RGB24 8 144
Red
Green
Blue
HSL
247.06deg 89.47% 29.8%
247.0689.4729.8HSL
Hue
Saturation
Lightness
HWB
247.06deg 3.14% 43.53%
247.063.1443.53HWB
Hue
Whiteness
Blackness
hex#180890
rgb24 8 144
hsl247.06deg 89.47% 29.8%
cmyk83.33% 94.44% 0% 43.53%
hwb247.06deg 3.14% 43.53%
xyz-d650.05 0.02 0.27
oklch0.3102 0.1949 270.46
oklab0.3102 0 -0.19
CMYK
83.33% 94.44% 0% 43.53%
83.3394.44043.53CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.27
0.050.020.27XYZ
X
Y
Z
OKLCH
0.3102 0.1949 270.46
0.31020.1949270.46LCH
Lightness
Chroma
Hue
OKLAB
0.3102 0 -0.19
0.31020-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons