Ultramarine

#09158F

About Ultramarine (#09158F)

The color #09158F, commonly known as Ultramarine, is a deep, rich shade of blue that falls within the blue-violet spectrum. Its hexadecimal representation signifies a low red component (09), a moderate green component (15), and a high blue component (8F), resulting in its distinctive deep blue appearance. Historically, ultramarine was derived from the precious gemstone lapis lazuli, making it one of the most expensive and highly prized pigments. This historical significance lends it an air of prestige and sophistication. Today, synthetic ultramarine is widely available, retaining the beauty of the original pigment at a fraction of the cost. It is known for its excellent lightfastness and stability, making it a reliable choice for various applications.

The color #09158F, a deep ultramarine, presents significant accessibility challenges. Its low luminance value of approximately 1% means that it provides very little contrast against a standard white background. According to WCAG guidelines, this fails all levels of contrast ratio requirements (AA and AAA) for both normal and large text. To ensure accessibility, it is crucial to use this color sparingly, especially for text or interactive elements. When using #09158F, pair it with very light colors, such as white (#FFFFFF) or very light grays, to achieve sufficient contrast. Alternatively, consider using a lighter shade of blue or a completely different color palette that offers better contrast ratios. Tools like contrast checkers can help verify compliance with accessibility standards.

Shades

Digital Color Formats

RGB
9 21 143
RGB9 21 143
Red
Green
Blue
HSL
234.63deg 88.16% 29.8%
234.6388.1629.8HSL
Hue
Saturation
Lightness
HWB
234.63deg 3.53% 43.92%
234.633.5343.92HWB
Hue
Whiteness
Blackness
hex#09158F
rgb9 21 143
hsl234.63deg 88.16% 29.8%
cmyk93.71% 85.31% 0% 43.92%
hwb234.63deg 3.53% 43.92%
xyz-d650.05 0.03 0.26
oklch0.3142 0.1897 266.03
oklab0.3142 -0.01 -0.19
CMYK
93.71% 85.31% 0% 43.92%
93.7185.31043.92CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.03 0.26
0.050.030.26XYZ
X
Y
Z
OKLCH
0.3142 0.1897 266.03
0.31420.1897266.03LCH
Lightness
Chroma
Hue
OKLAB
0.3142 -0.01 -0.19
0.3142-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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