Ultramarine

#0B138D

General Information about Ultramarine

The color #0B138D, also known as Ultramarine, is a deep shade of blue. It is located in the blue color range in the color spectrum. Ultramarine historically comes from the pigment derived from the gemstone lapis lazuli. The name 'ultramarine' literally means 'beyond the sea', as the pigment was imported to Europe from Asia. Nowadays, ultramarine is typically produced synthetically, making it more accessible and affordable. This color evokes feelings of depth, stability, and sophistication. In color psychology, blue is often associated with trust, intelligence, and serenity. Ultramarine, being a darker shade, can also convey authority and power. It's widely used in various applications, from art and design to branding and fashion, where a sense of depth and elegance is desired.

The hex color #0B138D, a deep ultramarine, presents significant accessibility challenges, especially when used as a background or text color. Its low lightness value results in very poor contrast with lighter colors, making it difficult for users with visual impairments to distinguish text or elements. According to WCAG guidelines, sufficient contrast ratios are essential for readability and usability. To ensure accessibility, it's crucial to pair this color with very light shades such as white or very pale yellows to achieve a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Avoid using it with mid-tone colors or darker shades, as this will render content nearly unreadable for many users. Proper contrast checking tools should be employed during the design process to validate the accessibility of color combinations.

Shades

Digital Color Formats

RGB
11 19 141
RGB11 19 141
Red
Green
Blue
HSL
236.31deg 85.53% 29.8%
236.3185.5329.8HSL
Hue
Saturation
Lightness
HWB
236.31deg 4.31% 44.71%
236.314.3144.71HWB
Hue
Whiteness
Blackness
hex#0B138D
rgb11 19 141
hsl236.31deg 85.53% 29.8%
cmyk92.2% 86.52% 0% 44.71%
hwb236.31deg 4.31% 44.71%
xyz-d650.05 0.02 0.25
oklch0.31 0.1885 266.55
oklab0.31 -0.01 -0.19
CMYK
92.2% 86.52% 0% 44.71%
92.286.52044.71CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.31 0.1885 266.55
0.310.1885266.55LCH
Lightness
Chroma
Hue
OKLAB
0.31 -0.01 -0.19
0.31-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons