Ultramarine

#2301B3

General Information About Ultramarine

Ultramarine, represented by the hexadecimal color code #2301B3, is a deep and intense shade of blue. It historically derives its name from the pigment originally made from lapis lazuli, a semi-precious stone imported from overseas (“ultra mare” in Latin). This color is located towards the violet end of the blue spectrum and is known for its rich and vibrant appearance. In the RGB color model, Ultramarine is composed of 13.73% red, 0.39% green, and 70.2% blue. Its CMYK values are 80% cyan, 99% magenta, 0% yellow, and 30% black. Ultramarine evokes feelings of calmness, depth, and sophistication. It is often associated with royalty, the sea, and the night sky. This color is frequently used to convey trustworthiness, stability, and authority in designs.

The color #2301B3, also known as Ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value of approximately 2% means that text rendered in this color against a white background will have very poor contrast, falling far short of WCAG (Web Content Accessibility Guidelines) recommendations for contrast ratios. To ensure readability and usability, it is crucial to avoid using this color for text or important interactive elements without careful consideration. Designers should pair Ultramarine with very light colors such as whites (#FFFFFF), very light greys (#F0F0F0) or vibrant yellows (#FFFF00) to meet minimum contrast requirements (at least 4.5:1 for normal text and 3:1 for large text). Consider using color contrast checking tools to verify compliance with accessibility standards. Furthermore, do not rely solely on color to convey information, as colorblind users might not be able to distinguish it. Always provide alternative cues, such as text labels or icons.

Shades

Digital Color Formats

RGB
35 1 179
RGB35 1 179
Red
Green
Blue
HSL
251.46 98.89% 35.29%
251.4698.8935.29HSL
Hue
Saturation
Lightness
HWB
251.46 0.39% 29.8%
251.460.3929.8HWB
Hue
Whiteness
Blackness
hex#2301B3
rgb35 1 179
hsl251.46 98.89% 35.29%
cmyk80.45% 99.44% 0% 29.8%
hwb251.46 0.39% 29.8%
xyz8.84 3.63 42.88
CMYK
80.45% 99.44% 0% 29.8%
80.4599.44029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.84 3.63 42.88
8.843.6342.88XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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