Ultramarine

#1B0D8A

General Information about Ultramarine (#1B0D8A)

The hex color #1B0D8A, commonly known as Ultramarine, is a deep shade of blue that falls within the blue-violet spectrum. It's a color often associated with depth, stability, and intelligence. In the RGB color model, #1B0D8A is composed of 10.6% red, 5.1% green, and 54.1% blue. This significant presence of blue gives Ultramarine its characteristic hue. In the CMYK color model, used for printing, it consists of 80% cyan, 91% magenta, 0% yellow, and 46% black. Ultramarine's historical significance stems from its origins as a pigment derived from the precious gemstone lapis lazuli, making it a highly valued color in art, especially during the Renaissance. Today, synthetic versions allow for broader and more affordable use of this striking color. It's important to note that the perception of Ultramarine, like all colors, can be subjective and influenced by individual experiences and cultural contexts.

The hex color #1B0D8A, also known as Ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its low lightness value (dark color) necessitates careful consideration of color contrast. When used as a background, text overlaid on #1B0D8A must be a light color to meet WCAG (Web Content Accessibility Guidelines) requirements for contrast ratios. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text (14pt bold or 18pt regular). Using online contrast checkers can help ensure compliance. Additionally, avoid using #1B0D8A for crucial visual elements like links or buttons without sufficient contrast, as users may struggle to identify them. Consider providing alternative cues, such as underlines or icons, to enhance usability. For users with color vision deficiencies, ensure that information is not conveyed solely through color. Providing redundant cues can significantly improve the accessibility of content using #1B0D8A.

Shades

Digital Color Formats

RGB
27 13 138
RGB27 13 138
Red
Green
Blue
HSL
246.72deg 82.78% 29.61%
246.7282.7829.61HSL
Hue
Saturation
Lightness
HWB
246.72deg 5.1% 45.88%
246.725.145.88HWB
Hue
Whiteness
Blackness
hex#1B0D8A
rgb27 13 138
hsl246.72deg 82.78% 29.61%
cmyk80.43% 90.58% 0% 45.88%
hwb246.72deg 5.1% 45.88%
xyz-d650.05 0.02 0.24
oklch0.3076 0.1848 272.04
oklab0.3076 0.01 -0.18
CMYK
80.43% 90.58% 0% 45.88%
80.4390.58045.88CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.24
0.050.020.24XYZ
X
Y
Z
OKLCH
0.3076 0.1848 272.04
0.30760.1848272.04LCH
Lightness
Chroma
Hue
OKLAB
0.3076 0.01 -0.18
0.30760.01-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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