Ultramarine

#19009B

General Information about #19009B

The hex color #19009B, also known as Ultramarine, is a deep, saturated shade of blue residing in the blue color family. It is composed of 9.8% red, 0% green, and 61.2% blue. In the RGB color space, its values are R:25, G:0, B:155. The color is often associated with feelings of depth, stability, and tranquility, reminiscent of the ocean's depths or the vastness of the night sky. Historically, Ultramarine was derived from the precious mineral lapis lazuli, making it a highly valued pigment in art. Its rich, intense hue made it a favorite among artists for depicting scenes of importance and reverence. Today, synthetic pigments offer more accessible and consistent means of achieving this vibrant blue, yet the historical significance of Ultramarine continues to influence its perception and usage in various creative fields.

The hex color #19009B, also known as Ultramarine, presents several accessibility challenges. Its dark hue results in a low contrast ratio against lighter backgrounds, which can make text and other visual elements difficult to read for users with visual impairments. According to WCAG guidelines, sufficient contrast is crucial for ensuring readability. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. To improve accessibility, it is advisable to pair #19009B with very light colors such as white (#FFFFFF) or very light grays. Additionally, avoid using this color for critical interactive elements, such as links or buttons, without clear visual cues to differentiate them from the surrounding content. Providing alternative text descriptions for images and icons is also essential for users who rely on screen readers. Careful consideration of color combinations and visual cues can significantly enhance the usability of content using #19009B.

Shades

Digital Color Formats

RGB
25 0 155
RGB25 0 155
Red
Green
Blue
HSL
249.68deg 100% 30.39%
249.6810030.39HSL
Hue
Saturation
Lightness
HWB
249.68deg 0% 39.22%
249.68039.22HWB
Hue
Whiteness
Blackness
hex#19009B
rgb25 0 155
hsl249.68deg 100% 30.39%
cmyk83.87% 100% 0% 39.22%
hwb249.68deg 0% 39.22%
xyz-d650.06 0.03 0.31
oklch0.3206 0.2101 270.05
oklab0.3206 0 -0.21
CMYK
83.87% 100% 0% 39.22%
83.87100039.22CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.03 0.31
0.060.030.31XYZ
X
Y
Z
OKLCH
0.3206 0.2101 270.05
0.32060.2101270.05LCH
Lightness
Chroma
Hue
OKLAB
0.3206 0 -0.21
0.32060-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons