Ultramarine

#170A8E

About Ultramarine (#170A8E)

Ultramarine, represented by the hexadecimal color code #170A8E, is a deep and intense shade of blue, historically derived from the precious mineral lapis lazuli. This pigment, prized for its brilliance and permanence, has been used in art and decoration for centuries. In the RGB color model, #170A8E is composed of 9.02% red, 3.92% green, and 55.69% blue. This combination results in a color with a strong blue dominance, evoking feelings of depth, stability, and sophistication. Its relatively low saturation and high blue component distinguish it from brighter, more vibrant blues. Ultramarine's historical significance and unique color properties make it a popular choice in various creative applications, including art, design, and fashion.

The hex color #170A8E, a deep ultramarine, presents significant accessibility challenges, especially in text applications. Its low luminance value of 0.01 necessitates careful pairing with background colors to ensure sufficient contrast. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. This dark shade requires very light foreground colors like white or pale yellow to meet these criteria. Using darker backgrounds or colors with similar luminance values will render text illegible for users with visual impairments, including those with low vision or color blindness. Careful consideration of color pairings and luminance contrast is crucial for ensuring an inclusive and accessible user experience.

Shades

Digital Color Formats

RGB
23 10 142
RGB23 10 142
Red
Green
Blue
HSL
245.91deg 86.84% 29.8%
245.9186.8429.8HSL
Hue
Saturation
Lightness
HWB
245.91deg 3.92% 44.31%
245.913.9244.31HWB
Hue
Whiteness
Blackness
hex#170A8E
rgb23 10 142
hsl245.91deg 86.84% 29.8%
cmyk83.8% 92.96% 0% 44.31%
hwb245.91deg 3.92% 44.31%
xyz-d650.05 0.02 0.26
oklch0.3084 0.192 270.21
oklab0.3084 0 -0.19
CMYK
83.8% 92.96% 0% 44.31%
83.892.96044.31CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.26
0.050.020.26XYZ
X
Y
Z
OKLCH
0.3084 0.192 270.21
0.30840.192270.21LCH
Lightness
Chroma
Hue
OKLAB
0.3084 0 -0.19
0.30840-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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