Ultramarine

#1B0CA6

General Information about #1B0CA6

The hex color code #1B0CA6 represents a dark shade of blue, often referred to as ultramarine. It is composed of 10.6% red, 4.7% green, and 65.1% blue. This particular shade of blue is known for its depth and richness, reminiscent of the pigment derived from the gemstone lapis lazuli. In color theory, ultramarine is often associated with feelings of serenity, trust, and stability. It is a popular choice in branding and design when conveying reliability and professionalism. The RGB (Red, Green, Blue) values are R:27, G:12, B:166, while its CMYK (Cyan, Magenta, Yellow, Key/Black) values are C:84, M:93, Y:0, K:35.

The hex color #1B0CA6, a deep ultramarine, presents significant accessibility challenges, especially when used as a background or text color. Its low luminance value (approximately 0.02) means that it requires very light text (white or near-white) to achieve acceptable contrast ratios as defined by WCAG (Web Content Accessibility Guidelines). A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using #1B0CA6 with dark or even moderately dark text will likely fail these contrast tests, making the content difficult or impossible for users with visual impairments to read. Careful consideration must be given to color pairings to ensure usability for all users. Tools such as WebAIM's contrast checker are invaluable in determining appropriate color combinations.

Shades

Digital Color Formats

RGB
27 12 166
RGB27 12 166
Red
Green
Blue
HSL
245.84deg 86.52% 34.9%
245.8486.5234.9HSL
Hue
Saturation
Lightness
HWB
245.84deg 4.71% 34.9%
245.844.7134.9HWB
Hue
Whiteness
Blackness
hex#1B0CA6
rgb27 12 166
hsl245.84deg 86.52% 34.9%
cmyk83.73% 92.77% 0% 34.9%
hwb245.84deg 4.71% 34.9%
xyz-d650.07 0.03 0.36
oklch0.3438 0.2165 269.72
oklab0.3438 0 -0.22
CMYK
83.73% 92.77% 0% 34.9%
83.7392.77034.9CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.03 0.36
0.070.030.36XYZ
X
Y
Z
OKLCH
0.3438 0.2165 269.72
0.34380.2165269.72LCH
Lightness
Chroma
Hue
OKLAB
0.3438 0 -0.22
0.34380-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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