Ultramarine

#0B0593

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #0B0593, is a deep blue pigment derived from the mineral lapis lazuli. The name translates to 'beyond the sea,' reflecting its historical importation from regions east of the Mediterranean Sea. Highly prized during the Middle Ages and Renaissance, Ultramarine was more expensive than gold and used primarily for depicting the robes of important religious figures like the Virgin Mary. Chemically, it's a complex sodium aluminosilicate containing sulfur, giving it its characteristic vibrant blue hue. Today, synthetic ultramarine is widely available, offering the same color at a fraction of the cost. Its rich and intense color makes it a popular choice in various applications, from art and cosmetics to industrial coatings.

The hex color #0B0593, also known as Ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value of approximately 2.3% means that it provides very little contrast against a white background. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text to ensure readability. Ultramarine fails to meet these standards when paired with white or other light colors. To improve accessibility, it's crucial to use a light color such as white or yellow text on this dark background to meet the legibility guidelines. For decorative elements or inactive UI components, a contrast ratio of 3:1 is acceptable. Using tools that evaluate color contrast can help designers ensure their color choices meet accessibility requirements, creating a more inclusive experience for all users.

Shades

Digital Color Formats

RGB
11 5 147
RGB11 5 147
Red
Green
Blue
HSL
242.54deg 93.42% 29.8%
242.5493.4229.8HSL
Hue
Saturation
Lightness
HWB
242.54deg 1.96% 42.35%
242.541.9642.35HWB
Hue
Whiteness
Blackness
hex#0B0593
rgb11 5 147
hsl242.54deg 93.42% 29.8%
cmyk92.52% 96.6% 0% 42.35%
hwb242.54deg 1.96% 42.35%
xyz-d650.05 0.02 0.28
oklch0.3068 0.2029 266.51
oklab0.3068 -0.01 -0.2
CMYK
92.52% 96.6% 0% 42.35%
92.5296.6042.35CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.28
0.050.020.28XYZ
X
Y
Z
OKLCH
0.3068 0.2029 266.51
0.30680.2029266.51LCH
Lightness
Chroma
Hue
OKLAB
0.3068 -0.01 -0.2
0.3068-0.01-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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