Ultramarine

#18088E

General Information about Ultramarine

The hex color #18088E, also known as Ultramarine, is a dark and captivating shade of blue. It resides in the blue color family and carries a sense of depth and sophistication. In the RGB color model, it consists of 9.41% red, 3.14% green, and 55.69% blue. This color is often associated with qualities like trust, intelligence, and stability, making it a popular choice for branding and visual communication. Its CMYK values are 83% cyan, 94% magenta, 0% yellow, and 44% black. The color's prominence in art history stems from the pigment derived from lapis lazuli, making it a highly prized and expensive color for centuries, often reserved for depicting important figures and religious scenes. Its rich history and evocative nature contribute to its enduring appeal in various design fields.

The color #18088E, a deep ultramarine, presents significant accessibility challenges, especially concerning color contrast. When used as text against a white background, it falls far short of WCAG (Web Content Accessibility Guidelines) standards for contrast ratio, making it difficult for users with low vision to read comfortably. A light-colored text, such as white or very light gray, against this background would also likely fail accessibility standards. To improve accessibility, consider using a much lighter shade of blue or a contrasting color like yellow or orange for text or interactive elements. Furthermore, avoid using this color alone to convey important information; always provide supplementary cues like text labels or icons. This ensures that all users, including those with color blindness, can understand the content effectively. Careful consideration of color combinations and luminance contrast is crucial for inclusive design.

Shades

Digital Color Formats

RGB
24 8 142
RGB24 8 142
Red
Green
Blue
HSL
247.16 89.33% 29.41%
247.1689.3329.41HSL
Hue
Saturation
Lightness
HWB
247.16 3.14% 44.31%
247.163.1444.31HWB
Hue
Whiteness
Blackness
hex#18088E
rgb24 8 142
hsl247.16 89.33% 29.41%
cmyk83.1% 94.37% 0% 44.31%
hwb247.16 3.14% 44.31%
xyz5.35 2.32 25.76
CMYK
83.1% 94.37% 0% 44.31%
83.194.37044.31CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.35 2.32 25.76
5.352.3225.76XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025