Ultramarine

#1B0E8A

General Information about Ultramarine

The color #1B0E8A, also known as Ultramarine, is a deep, vivid blue that historically has been prized for its rich pigmentation and association with luxury. Derived from the Latin 'ultramarinus', meaning 'beyond the sea', it was originally made from the semi-precious stone lapis lazuli, imported from mines in Afghanistan. Because of the complicated production process, during the Middle Ages and Renaissance, ultramarine was more expensive than gold and primarily used for the robes of biblical characters. Today, synthetic ultramarine is readily available. In the RGB color model, it consists of 10.6% red, 5.5% green, and 54.1% blue. Ultramarine is known for its captivating depth and is often associated with royalty, intellect, and introspection.

The color #1B0E8A, a deep ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value of approximately 3% means that it offers very little contrast when paired with similarly dark colors. This poses issues for readability when used for text or interactive elements like buttons. To ensure inclusivity, it's crucial to use #1B0E8A with light-colored backgrounds (e.g., white or very pale yellow) to meet WCAG (Web Content Accessibility Guidelines) contrast ratio requirements of at least 4.5:1 for standard text and 3:1 for large text. If using this color for interactive elements, ensure sufficient visual cues are provided, such as clear borders or distinct hover states, to aid users who might struggle to perceive the color difference alone. Also avoid using it for conveying critical information without alternative cues, as color blindness affects a significant portion of the population.

Shades

Digital Color Formats

RGB
27 14 138
RGB27 14 138
Red
Green
Blue
HSL
246.29deg 81.58% 29.8%
246.2981.5829.8HSL
Hue
Saturation
Lightness
HWB
246.29deg 5.49% 45.88%
246.295.4945.88HWB
Hue
Whiteness
Blackness
hex#1B0E8A
rgb27 14 138
hsl246.29deg 81.58% 29.8%
cmyk80.43% 89.86% 0% 45.88%
hwb246.29deg 5.49% 45.88%
xyz-d650.05 0.02 0.24
oklch0.3084 0.1842 272
oklab0.3084 0.01 -0.18
CMYK
80.43% 89.86% 0% 45.88%
80.4389.86045.88CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.24
0.050.020.24XYZ
X
Y
Z
OKLCH
0.3084 0.1842 272
0.30840.1842272LCH
Lightness
Chroma
Hue
OKLAB
0.3084 0.01 -0.18
0.30840.01-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons