Ultramarine

#15108B

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #15108B, is a deep blue pigment traditionally derived from the mineral lapis lazuli. The name "ultramarine" comes from the Latin "ultramarinus," meaning "beyond the sea," as the pigment was originally imported to Europe from Asia. Historically, it was highly prized for its intense and luminous color, making it a favored choice among Renaissance painters. In modern usage, Ultramarine refers to a synthetic pigment that replicates the properties of the natural version. It is characterized by its vibrant, non-toxic, and lightfast qualities, making it suitable for various applications in art, cosmetics, and industrial coatings. Its deep blue hue is often associated with calmness, depth, and sophistication.

The color #15108B, Ultramarine, presents significant accessibility challenges due to its dark hue. Its low luminance results in poor contrast against light backgrounds, making text and other elements difficult to read for users, especially those with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Ultramarine often fails to meet these criteria when paired with common background colors like white or light gray. To improve accessibility, consider using Ultramarine sparingly, primarily for decorative elements, and always ensure sufficient contrast by pairing it with very light colors. Providing alternative color schemes can also enhance usability for users with different visual needs. Tools are available to assess color contrast ratios and ensure compliance with accessibility standards.

Shades

Digital Color Formats

RGB
21 16 139
RGB21 16 139
Red
Green
Blue
HSL
242.44 79.35% 30.39%
242.4479.3530.39HSL
Hue
Saturation
Lightness
HWB
242.44 6.27% 45.49%
242.446.2745.49HWB
Hue
Whiteness
Blackness
hex#15108B
rgb21 16 139
hsl242.44 79.35% 30.39%
cmyk84.89% 88.49% 0% 45.49%
hwb242.44 6.27% 45.49%
xyz5.15 2.39 24.62
CMYK
84.89% 88.49% 0% 45.49%
84.8988.49045.49CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.15 2.39 24.62
5.152.3924.62XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025