Ultramarine

#180C8C

General Information about Ultramarine

The hex color #180C8C, also known as Ultramarine, is a deep, rich shade of blue. In the RGB color model, it is composed of 9.41% red, 4.71% green, and 54.9% blue. This particular combination results in a color that evokes feelings of depth, mystery, and sophistication. Ultramarine has historical significance, originally derived from the precious gemstone lapis lazuli. It was highly valued for its vibrant and lasting color, often used in religious art and royal commissions. Today, synthetic versions of Ultramarine offer a more accessible alternative while maintaining its distinctive hue. The color is frequently used in branding and design to convey a sense of trust, authority, and elegance.

The contrast ratio of #180C8C with white is very low, making it difficult for users with visual impairments to read text or distinguish elements. Using white text on a #180C8C background is strongly discouraged. For improved accessibility, consider using lighter shades of blue or pairing it with contrasting colors like yellow or bright green. Ensuring a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (14pt bold or 18pt) is crucial, as recommended by WCAG guidelines. Another strategy to improve accessibility is to increase the font size or add spacing between letters and lines, to enhance readability for all users. Also, provide alternative text descriptions for images using this color, so screen reader users can understand the content.

Shades

Digital Color Formats

RGB
24 12 140
RGB24 12 140
Red
Green
Blue
HSL
245.63deg 84.21% 29.8%
245.6384.2129.8HSL
Hue
Saturation
Lightness
HWB
245.63deg 4.71% 45.1%
245.634.7145.1HWB
Hue
Whiteness
Blackness
hex#180C8C
rgb24 12 140
hsl245.63deg 84.21% 29.8%
cmyk82.86% 91.43% 0% 45.1%
hwb245.63deg 4.71% 45.1%
xyz-d650.05 0.02 0.25
oklch0.3077 0.1884 270.7
oklab0.3077 0 -0.19
CMYK
82.86% 91.43% 0% 45.1%
82.8691.43045.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3077 0.1884 270.7
0.30770.1884270.7LCH
Lightness
Chroma
Hue
OKLAB
0.3077 0 -0.19
0.30770-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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