Ultramarine

#20049B

General Information about Ultramarine

The color #20049B, known as Ultramarine, is a deep, vivid blue hue. It is composed of 12.5% red, 1.57% green, and 61.18% blue. In the RGB color model, it is defined by the values (32, 4, 155). Ultramarine has a long and storied history, originally derived from the precious gemstone lapis lazuli. Ground lapis lazuli was used to create the pigment for centuries, making it one of the most expensive and sought-after colors for artists. It has been widely used in religious paintings to depict the robes of the Virgin Mary, symbolizing her purity and status. Today, synthetic ultramarine is readily available and more affordable, but its rich color and historical significance continue to captivate.

The hex color #20049B, also known as Ultramarine, presents several accessibility considerations for web developers. Its dark hue provides a strong contrast against lighter backgrounds, making it suitable for text and interactive elements. However, when paired with other dark colors, the contrast may become insufficient, posing readability challenges for users with visual impairments. It is crucial to assess the color contrast ratio using tools like the WebAIM Contrast Checker to ensure it meets WCAG guidelines (a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text). Furthermore, avoid using this color as the sole indicator of interactive elements, such as links or buttons, as colorblind users may not be able to distinguish them. Providing additional cues, like underlines or icons, enhances accessibility for all users.

Shades

Digital Color Formats

RGB
32 4 155
RGB32 4 155
Red
Green
Blue
HSL
251.13deg 94.97% 31.18%
251.1394.9731.18HSL
Hue
Saturation
Lightness
HWB
251.13deg 1.57% 39.22%
251.131.5739.22HWB
Hue
Whiteness
Blackness
hex#20049B
rgb32 4 155
hsl251.13deg 94.97% 31.18%
cmyk79.35% 97.42% 0% 39.22%
hwb251.13deg 1.57% 39.22%
xyz-d650.07 0.03 0.31
oklch0.3272 0.2064 272.55
oklab0.3272 0.01 -0.21
CMYK
79.35% 97.42% 0% 39.22%
79.3597.42039.22CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.03 0.31
0.070.030.31XYZ
X
Y
Z
OKLCH
0.3272 0.2064 272.55
0.32720.2064272.55LCH
Lightness
Chroma
Hue
OKLAB
0.3272 0.01 -0.21
0.32720.01-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons