Ultramarine

#190791

General Information about Ultramarine

Ultramarine, represented by the hex code #190791, is a deep blue color with a rich history. The term 'ultramarine' originates from the Latin 'ultramarinus,' meaning 'beyond the sea,' as it was originally derived from the precious gemstone lapis lazuli imported from Afghanistan by sea during the Middle Ages. Highly valued for its intense color, it was historically used in paintings, particularly during the Renaissance, and was often more expensive than gold. Chemically, it is a complex sodium aluminosilicate with sulfur, giving it its distinctive hue. Today, synthetic ultramarine is widely available, making it more accessible for various applications. Its color coordinates place it in the blue-violet range, evoking feelings of depth, stability, and sophistication.

The contrast ratio of #190791 against a white background is approximately 1.9:1, which is considered poor. This means text rendered in #190791 on a white background might be difficult for users with visual impairments to read. To improve accessibility, it's advisable to use a lighter background color or a lighter shade of text. When using this color, it's also important to consider the size of the text, because larger fonts have better readability. Adhering to WCAG guidelines by ensuring a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text, or considering other visual cues, will significantly enhance accessibility for a broader audience.

Shades

Digital Color Formats

RGB
25 7 145
RGB25 7 145
Red
Green
Blue
HSL
247.83deg 90.79% 29.8%
247.8390.7929.8HSL
Hue
Saturation
Lightness
HWB
247.83deg 2.75% 43.14%
247.832.7543.14HWB
Hue
Whiteness
Blackness
hex#190791
rgb25 7 145
hsl247.83deg 90.79% 29.8%
cmyk82.76% 95.17% 0% 43.14%
hwb247.83deg 2.75% 43.14%
xyz-d650.06 0.02 0.27
oklch0.3115 0.1962 270.76
oklab0.3115 0 -0.2
CMYK
82.76% 95.17% 0% 43.14%
82.7695.17043.14CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.02 0.27
0.060.020.27XYZ
X
Y
Z
OKLCH
0.3115 0.1962 270.76
0.31150.1962270.76LCH
Lightness
Chroma
Hue
OKLAB
0.3115 0 -0.2
0.31150-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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