Ultramarine

#0D198E

About Ultramarine (#0D198E)

The hex color code #0D198E represents a deep shade of ultramarine blue. It is composed of 5.1% red, 9.8% green, and 55.7% blue. In the RGB color space, this translates to (13, 25, 142), indicating a strong dominance of blue. Ultramarine, historically derived from the precious stone lapis lazuli, is associated with depth, stability, and sophistication. In color psychology, dark blues are often linked to trust, authority, and intelligence. This particular shade evokes a sense of calm and can be used to create a professional or authoritative aesthetic. Due to its low luminance, it is considered a dark color, requiring careful consideration of contrast when used in design applications to ensure accessibility.

The color #0d198e, a deep shade of ultramarine, presents significant accessibility challenges, particularly regarding color contrast. When used as text, it requires a very light background to meet WCAG (Web Content Accessibility Guidelines) standards for readability. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Insufficient contrast can make content difficult or impossible for users with visual impairments to perceive, including those with low vision or color blindness. When used for non-text elements, such as icons or graphical controls, ensure a contrast ratio of 3:1 against adjacent colors. Also, avoid relying solely on color to convey important information; use text labels or other visual cues to ensure inclusivity. Testing with accessibility evaluation tools and user feedback is crucial for validating the accessibility of any design incorporating #0d198e.

Shades

Digital Color Formats

RGB
13 25 142
RGB13 25 142
Red
Green
Blue
HSL
234.42 83.23% 30.39%
234.4283.2330.39HSL
Hue
Saturation
Lightness
HWB
234.42 5.1% 44.31%
234.425.144.31HWB
Hue
Whiteness
Blackness
hex#0D198E
rgb13 25 142
hsl234.42 83.23% 30.39%
cmyk90.85% 82.39% 0% 44.31%
hwb234.42 5.1% 44.31%
xyz5.4 2.73 25.83
CMYK
90.85% 82.39% 0% 44.31%
90.8582.39044.31CMYK
Cyan
Magenta
Yellow
Key
XYZ
5.4 2.73 25.83
5.42.7325.83XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025