Ultramarine

#1B009B

About Ultramarine (#1B009B)

The hex color #1B009B, also known as Ultramarine, is a deep, rich shade of blue. It sits prominently within the blue color spectrum, leaning towards the indigo family. The color is composed of 10.6% red, 0% green, and 60.8% blue. In the RGB color space, it is represented as RGB(27, 0, 155). Ultramarine is associated with feelings of calmness, serenity, and wisdom. Historically, ultramarine pigment was derived from the semi-precious stone lapis lazuli, making it a highly valued and expensive color, often reserved for the robes of the Virgin Mary in religious paintings. Today, synthetic ultramarine is widely available, making it accessible for various applications, from digital design to textile production.

The hex color #1B009B, a deep ultramarine, presents accessibility challenges. Its dark nature means it requires careful consideration when choosing text and background color combinations. For text, pairing it with a light color like #FFFFFF (white) or #FAF9F6 (eggshell) is essential to ensure sufficient contrast for readability, aiming for a contrast ratio of at least 4.5:1 as recommended by WCAG guidelines. In user interfaces, using #1B009B for interactive elements like buttons or links necessitates a clear visual distinction upon hover or focus, such as a color change or an added outline, to aid users with visual impairments. Avoid using it as a background color with dark text, as this will create a low contrast and will be hard to read. Testing color combinations with accessibility tools is crucial to guarantee compliance and inclusive design.

Shades

Digital Color Formats

RGB
27 0 155
RGB27 0 155
Red
Green
Blue
HSL
250.45 100% 30.39%
250.4510030.39HSL
Hue
Saturation
Lightness
HWB
250.45 0% 39.22%
250.45039.22HWB
Hue
Whiteness
Blackness
hex#1B009B
rgb27 0 155
hsl250.45 100% 30.39%
cmyk82.58% 100% 0% 39.22%
hwb250.45 0% 39.22%
xyz6.37 2.6 31.18
CMYK
82.58% 100% 0% 39.22%
82.58100039.22CMYK
Cyan
Magenta
Yellow
Key
XYZ
6.37 2.6 31.18
6.372.631.18XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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