Ultramarine

#1B0593

About Ultramarine (#1B0593)

The hexadecimal color code #1B0593 represents a dark shade of blue, often described as ultramarine. In the RGB color model, it is composed of 10.6% red, 2.0% green, and 57.6% blue. This color is characterized by its strong blue saturation and very low luminance, placing it firmly within the darker end of the color spectrum. Ultramarine historically refers to a pigment derived from lapis lazuli, a semi-precious stone. In modern applications, ultramarine hues are created synthetically, providing consistent and affordable access to this vibrant color. Because of its high blue content, #1B0593 can evoke feelings of calmness, depth, and sophistication.

The color #1B0593, a deep ultramarine, presents significant accessibility challenges, particularly in web design. Its very low luminance value means that text rendered in this color requires careful consideration of contrast ratios. To meet WCAG (Web Content Accessibility Guidelines) standards, especially versions 2.1 and later, text using #1B0593 needs to be paired with a very light background color to achieve a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Failure to meet these ratios can make content illegible for users with low vision or color blindness. Avoid using this color for crucial elements like links or buttons without ensuring sufficient contrast. Consider providing alternative color schemes or allowing users to customize their display settings to ensure everyone can access the information comfortably. Thorough testing with accessibility tools is crucial to identify and resolve potential issues.

Shades

Digital Color Formats

RGB
27 5 147
RGB27 5 147
Red
Green
Blue
HSL
249.3deg 93.42% 29.8%
249.393.4229.8HSL
Hue
Saturation
Lightness
HWB
249.3deg 1.96% 42.35%
249.31.9642.35HWB
Hue
Whiteness
Blackness
hex#1B0593
rgb27 5 147
hsl249.3deg 93.42% 29.8%
cmyk81.63% 96.6% 0% 42.35%
hwb249.3deg 1.96% 42.35%
xyz-d650.06 0.02 0.28
oklch0.314 0.1987 271.38
oklab0.314 0 -0.2
CMYK
81.63% 96.6% 0% 42.35%
81.6396.6042.35CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.02 0.28
0.060.020.28XYZ
X
Y
Z
OKLCH
0.314 0.1987 271.38
0.3140.1987271.38LCH
Lightness
Chroma
Hue
OKLAB
0.314 0 -0.2
0.3140-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons