Ultramarine

#150B8D

General Information about Ultramarine

The hex color #150B8D, also known as Ultramarine, is a deep, rich shade of blue. It is located in the blue-violet part of the color spectrum. In the RGB color model, it is composed of 8.24% red, 4.31% green, and 55.29% blue. In the CMYK color model, it consists of 85.07% cyan, 92.19% magenta, 0% yellow, and 44.71% black. Ultramarine historically comes from the rare and expensive mineral lapis lazuli, making it a highly valued pigment, especially in Renaissance paintings. The color evokes feelings of royalty, sophistication, and depth. It is commonly associated with the sea and sky, conveying a sense of vastness and serenity.

The color #150B8D, a deep ultramarine, presents some accessibility challenges. Its low luminance value of 2 means that it requires careful consideration when used as a background or text color. According to WCAG guidelines, it's essential to ensure sufficient contrast between the foreground and background colors. For text, a minimum contrast ratio of 4.5:1 is recommended for normal text and 3:1 for large text. Given its darkness, pairing #150B8D with very light colors like white (#FFFFFF) or light yellow (#FFFFE0) is crucial for readability. Using a color contrast checker is highly advisable to verify compliance. When using it for decorative elements, ensure that any interactive elements meet contrast requirements. Also, it's important to not rely solely on color to convey important information; supplement it with text labels or other visual cues to accommodate users with color vision deficiencies.

Shades

Digital Color Formats

RGB
21 11 141
RGB21 11 141
Red
Green
Blue
HSL
244.62deg 85.53% 29.8%
244.6285.5329.8HSL
Hue
Saturation
Lightness
HWB
244.62deg 4.31% 44.71%
244.624.3144.71HWB
Hue
Whiteness
Blackness
hex#150B8D
rgb21 11 141
hsl244.62deg 85.53% 29.8%
cmyk85.11% 92.2% 0% 44.71%
hwb244.62deg 4.31% 44.71%
xyz-d650.05 0.02 0.25
oklch0.3067 0.1909 269.56
oklab0.3067 0 -0.19
CMYK
85.11% 92.2% 0% 44.71%
85.1192.2044.71CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3067 0.1909 269.56
0.30670.1909269.56LCH
Lightness
Chroma
Hue
OKLAB
0.3067 0 -0.19
0.30670-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons