Ultramarine

#1605AF

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #1605AF, is a deep, vivid blue pigment originally derived from the mineral lapis lazuli. The name 'ultramarine' comes from the Latin 'ultramarinus,' meaning 'beyond the sea,' as the pigment was imported to Europe from mines in Asia. Historically, it was highly valued, often more expensive than gold, and reserved for the most important artistic commissions, such as the robes of the Virgin Mary in Renaissance paintings. Chemically, the modern synthetic equivalent of ultramarine is a complex sodium aluminum silicate with sulfur. This synthetic version, developed in the 19th century, made the color more accessible and affordable, leading to its widespread use in various applications, from fine art to laundry bluing agents. The color embodies depth and richness, often associated with royalty, intellect, and the sea.

The color #1605AF, a deep ultramarine, presents significant accessibility challenges, especially when used as a background or text color. Its low luminance value of 0.016 creates very little contrast against darker shades, making it nearly impossible to read text rendered in black or other dark colors. To ensure readability, it needs to be paired with very light colors such as white or very pale yellows. According to WCAG guidelines, sufficient contrast ratios are crucial for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. The ultramarine hue also needs careful consideration for users with color vision deficiencies, as its blue component might not be distinctly perceived by everyone. Using it with supporting visual cues, like icons or text labels, is recommended to convey information effectively. Always test color combinations using accessibility evaluation tools to verify that they meet the necessary contrast thresholds and are usable by a wide range of users.

Shades

Digital Color Formats

RGB
22 5 175
RGB22 5 175
Red
Green
Blue
HSL
246 94.44% 35.29%
24694.4435.29HSL
Hue
Saturation
Lightness
HWB
246 1.96% 31.37%
2461.9631.37HWB
Hue
Whiteness
Blackness
hex#1605AF
rgb22 5 175
hsl246 94.44% 35.29%
cmyk87.43% 97.14% 0% 31.37%
hwb246 1.96% 31.37%
xyz8.12 3.37 40.78
CMYK
87.43% 97.14% 0% 31.37%
87.4397.14031.37CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.12 3.37 40.78
8.123.3740.78XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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