Ultramarine

#180791

General Information about #180791

The hexadecimal color #180791 represents a deep shade of ultramarine, a color traditionally associated with royalty, depth, and knowledge. In the RGB color model, it is composed of 9.41% red, 2.75% green, and 56.86% blue. This particular combination results in a color that is perceived as both intense and calming, making it suitable for conveying seriousness or trustworthiness. Historically, ultramarine pigment was derived from lapis lazuli, making it a highly valued and expensive color, used especially in religious artworks to depict the robes of the Virgin Mary. Nowadays it is used for diverse purposes, from painting to industrial applications.

The color #180791, a deep ultramarine, presents significant accessibility challenges, especially in web design. Its low luminance value of 4.52 means that text using this color against a white background will likely fail WCAG (Web Content Accessibility Guidelines) contrast requirements. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. To ensure readability and accessibility, it's crucial to pair #180791 with much lighter colors or use it sparingly for decorative elements. A white or very light yellow text on this background might offer sufficient contrast. Also, avoid using it for crucial interactive elements without proper contrast, as it can exclude users with visual impairments. For users with color blindness, differentiating between this color and very dark blues or purples might be difficult, further emphasizing the need for careful contrast considerations and redundant coding with alternative indicators.

Shades

Digital Color Formats

RGB
24 7 145
RGB24 7 145
Red
Green
Blue
HSL
247.39deg 90.79% 29.8%
247.3990.7929.8HSL
Hue
Saturation
Lightness
HWB
247.39deg 2.75% 43.14%
247.392.7543.14HWB
Hue
Whiteness
Blackness
hex#180791
rgb24 7 145
hsl247.39deg 90.79% 29.8%
cmyk83.45% 95.17% 0% 43.14%
hwb247.39deg 2.75% 43.14%
xyz-d650.06 0.02 0.27
oklch0.3109 0.1964 270.4
oklab0.3109 0 -0.2
CMYK
83.45% 95.17% 0% 43.14%
83.4595.17043.14CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.02 0.27
0.060.020.27XYZ
X
Y
Z
OKLCH
0.3109 0.1964 270.4
0.31090.1964270.4LCH
Lightness
Chroma
Hue
OKLAB
0.3109 0 -0.2
0.31090-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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