Ultramarine

#1D11A3

About Ultramarine (#1D11A3)

The hexadecimal color #1D11A3, also known as Ultramarine, is a deep and intense shade of blue found towards the violet end of the spectrum. In the RGB color model, it is composed of 11.4% red, 6.7% green, and 63.9% blue. Ultramarine's depth is associated with qualities such as authority, trust, and intelligence. It is often perceived as a calming and sophisticated color, making it a favorite choice in branding and design where these attributes are desired. Originating from the pigment derived from the precious mineral lapis lazuli, Ultramarine historically carried significant value, often reserved for use in royal or religious contexts due to its rarity and expense.

The color #1D11A3, a deep ultramarine, presents specific accessibility considerations for web development. Its low luminance value means that it requires careful contrast consideration, especially for text. According to WCAG guidelines, to ensure readability, text using this color needs to be paired with a very light background to achieve a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Using it for interactive elements like buttons or links also demands clear visual cues beyond color alone, such as underlines or borders, to assist users with color vision deficiencies. Avoid using it as the sole indicator of focus or selection. Careful attention to these details is crucial for creating inclusive and accessible web experiences.

Shades

Digital Color Formats

RGB
29 17 163
RGB29 17 163
Red
Green
Blue
HSL
244.93 81.11% 35.29%
244.9381.1135.29HSL
Hue
Saturation
Lightness
HWB
244.93 6.67% 36.08%
244.936.6736.08HWB
Hue
Whiteness
Blackness
hex#1D11A3
rgb29 17 163
hsl244.93 81.11% 35.29%
cmyk82.21% 89.57% 0% 36.08%
hwb244.93 6.67% 36.08%
xyz7.32 3.31 34.9
CMYK
82.21% 89.57% 0% 36.08%
82.2189.57036.08CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.32 3.31 34.9
7.323.3134.9XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025