Ultramarine

#0A188E

General Information about #0A188E

The hexadecimal color code #0A188E represents a deep shade of ultramarine blue. In the RGB color model, it consists of 3.92% red, 9.41% green, and 55.69% blue. This signifies that the blue component dominates the color, resulting in its characteristic deep blue appearance. In the CMYK color model, it is composed of 93% cyan, 83% magenta, 0% yellow, and 44% black. This indicates that the color is heavily reliant on cyan and magenta inks to achieve its vibrant blue hue. Ultramarine blue is often associated with feelings of tranquility, stability, and wisdom. It is a color that evokes a sense of calm and is frequently used in branding and design to convey trust and reliability. Its rich, saturated tone makes it a versatile choice for a variety of applications.

The color #0A188E, a deep ultramarine, presents some accessibility challenges, especially in text-based applications. Its low luminance value requires careful consideration of contrast ratios to ensure readability for users with visual impairments. According to WCAG guidelines, sufficient contrast is crucial for text to be legible. When using #0A188E as a background color, it's essential to pair it with a light-colored text (e.g., white or very pale yellow) to achieve a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Using it for interactive elements like buttons or links requires even greater attention to contrast to ensure users can easily identify and interact with them. Avoid using #0A188E for small icons or intricate details, as its darkness can make these elements difficult to discern. For decorative purposes, the contrast requirements are less stringent, but it's always best to err on the side of caution and prioritize accessibility whenever possible.

Shades

Digital Color Formats

RGB
10 24 142
RGB10 24 142
Red
Green
Blue
HSL
233.64deg 86.84% 29.8%
233.6486.8429.8HSL
Hue
Saturation
Lightness
HWB
233.64deg 3.92% 44.31%
233.643.9244.31HWB
Hue
Whiteness
Blackness
hex#0A188E
rgb10 24 142
hsl233.64deg 86.84% 29.8%
cmyk92.96% 83.1% 0% 44.31%
hwb233.64deg 3.92% 44.31%
xyz-d650.05 0.03 0.26
oklch0.3168 0.186 266.15
oklab0.3168 -0.01 -0.19
CMYK
92.96% 83.1% 0% 44.31%
92.9683.1044.31CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.03 0.26
0.050.030.26XYZ
X
Y
Z
OKLCH
0.3168 0.186 266.15
0.31680.186266.15LCH
Lightness
Chroma
Hue
OKLAB
0.3168 -0.01 -0.19
0.3168-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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