Ultramarine

#1505AF

General Information about Ultramarine

The hexadecimal color code #1505AF represents a specific shade of blue known as Ultramarine. It is composed of 8.24% red, 1.96% green, and 68.63% blue. In the RGB color model, this corresponds to the values R:21, G:5, B:175. The color is a very deep, saturated blue, which can be perceived as intense and regal. Ultramarine has a long history, originally derived from the precious gemstone lapis lazuli. Due to its rarity and cost, it was highly valued and often associated with royalty and religious figures. Today, synthetic versions of Ultramarine are widely available, making it accessible for various applications. It is important to understand its composition to use it effectively in digital and traditional media, accounting for its impact on contrast and readability.

The color #1505AF, Ultramarine, presents some accessibility challenges, especially in web design. Its deep hue results in low contrast when paired with lighter colors like white or pale yellow, which is vital for readability. To ensure compliance with accessibility standards such as WCAG, it is crucial to use a sufficient contrast ratio of at least 4.5:1 for normal text and 3:1 for large text and user interface components. Using color contrast tools can help determine suitable pairings. Furthermore, consider providing alternative visual cues, such as icons or text labels, for users who may have difficulty distinguishing colors. When using this color for interactive elements, verify that the focus states are clearly visible and distinguishable from the background, even for those with visual impairments or color blindness. Because it is a dark color, it requires very light foreground text to meet contrast guidelines.

Shades

Digital Color Formats

RGB
21 5 175
RGB21 5 175
Red
Green
Blue
HSL
245.65 94.44% 35.29%
245.6594.4435.29HSL
Hue
Saturation
Lightness
HWB
245.65 1.96% 31.37%
245.651.9631.37HWB
Hue
Whiteness
Blackness
hex#1505AF
rgb21 5 175
hsl245.65 94.44% 35.29%
cmyk88% 97.14% 0% 31.37%
hwb245.65 1.96% 31.37%
xyz8.1 3.36 40.78
CMYK
88% 97.14% 0% 31.37%
8897.14031.37CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.1 3.36 40.78
8.13.3640.78XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025