Ultramarine

#170F8C

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #170F8C, is a deep blue pigment derived from the mineral lapis lazuli. Historically, it was highly prized and expensive, often used in illuminated manuscripts and Renaissance paintings to depict the robes of the Virgin Mary, symbolizing purity and holiness. Chemically, it is a complex sulfur-containing sodium aluminosilicate. In modern applications, synthetic ultramarine is widely used due to its lower cost and consistent color properties. It's employed in various industries, including paints, plastics, cosmetics, and laundry detergents. Ultramarine absorbs yellow light, making it useful for whitening paper and textiles. Its rich and vibrant blue hue continues to be valued for its aesthetic qualities, making it a staple in art, design, and manufacturing.

The color #170F8C, also known as Ultramarine, presents several accessibility considerations for web developers. With its dark hue, it's crucial to ensure sufficient contrast when used as a text or background color. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text against its background. Pairing Ultramarine with lighter colors like whites, creams, or light yellows can help meet these standards. Tools like contrast checkers can assist in verifying compliance. Additionally, avoid using Ultramarine as the sole indicator of interactive elements. Supplement color cues with text labels, icons, or other visual indicators to accommodate users with color vision deficiencies, making the interface more inclusive and accessible to a wider audience. Considering these factors ensures content is perceivable and usable for everyone.

Shades

Digital Color Formats

RGB
23 15 140
RGB23 15 140
Red
Green
Blue
HSL
243.84deg 80.65% 30.39%
243.8480.6530.39HSL
Hue
Saturation
Lightness
HWB
243.84deg 5.88% 45.1%
243.845.8845.1HWB
Hue
Whiteness
Blackness
hex#170F8C
rgb23 15 140
hsl243.84deg 80.65% 30.39%
cmyk83.57% 89.29% 0% 45.1%
hwb243.84deg 5.88% 45.1%
xyz-d650.05 0.02 0.25
oklch0.3096 0.187 270.22
oklab0.3096 0 -0.19
CMYK
83.57% 89.29% 0% 45.1%
83.5789.29045.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3096 0.187 270.22
0.30960.187270.22LCH
Lightness
Chroma
Hue
OKLAB
0.3096 0 -0.19
0.30960-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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