Ultramarine

#011397

General Information about Ultramarine

The hex color #011397, also known as Ultramarine, is a deep and saturated shade of blue. It belongs to the blue color family and is characterized by its rich and intense hue. In the RGB color model, #011397 is composed of 0.4% red, 7.5% green, and 59.2% blue. Its CMYK equivalent is approximately 99% cyan, 85% magenta, 0% yellow, and 41% black. Ultramarine's historical significance stems from the pigment derived from lapis lazuli, a rare and expensive gemstone, making it a prized color among artists. Today, synthetic versions provide more accessible and consistent alternatives. Its depth and vibrancy make it suitable for various applications, from digital design to traditional art, although care should be taken to ensure accessibility and readability when using it in web contexts.

The color #011397, a deep ultramarine, presents significant accessibility challenges. Its very low luminance value of 0.006 means that text rendered in this color against a white background, or vice versa, will have extremely poor contrast. According to WCAG guidelines, the contrast ratio is far below the minimum recommended 4.5:1 for normal text and 3:1 for large text. This can cause readability issues, especially for users with visual impairments. Web developers should avoid using this color for text or important graphical elements without careful consideration of contrast. To improve accessibility, consider using a much lighter color for the background or foreground, or employing a color contrast analyzer to ensure sufficient contrast. Alternatives might include lighter shades of blue or completely different color palettes that offer better contrast ratios. Proper use of ARIA attributes can also aid screen readers in conveying information effectively, although this does not address the visual contrast problem. Testing with assistive technologies is crucial.

Shades

Digital Color Formats

RGB
1 19 151
RGB1 19 151
Red
Green
Blue
HSL
232.8deg 98.68% 29.8%
232.898.6829.8HSL
Hue
Saturation
Lightness
HWB
232.8deg 0.39% 40.78%
232.80.3940.78HWB
Hue
Whiteness
Blackness
hex#011397
rgb1 19 151
hsl232.8deg 98.68% 29.8%
cmyk99.34% 87.42% 0% 40.78%
hwb232.8deg 0.39% 40.78%
xyz-d650.06 0.03 0.29
oklch0.3205 0.2019 264.41
oklab0.3205 -0.02 -0.2
CMYK
99.34% 87.42% 0% 40.78%
99.3487.42040.78CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.03 0.29
0.060.030.29XYZ
X
Y
Z
OKLCH
0.3205 0.2019 264.41
0.32050.2019264.41LCH
Lightness
Chroma
Hue
OKLAB
0.3205 -0.02 -0.2
0.3205-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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