Ultramarine

#0B138C

General Information about #0B138C (Ultramarine)

The hexadecimal color #0B138C, also known as Ultramarine, is a deep shade of blue. In the RGB color model, it consists of 4.31% red, 7.45% green, and 54.9% blue. This creates a color that is perceived as both calming and sophisticated. Ultramarine has a rich history, originally derived from the precious gemstone lapis lazuli. It was highly valued by artists and used extensively in paintings, particularly during the Renaissance. Today, synthetic ultramarine pigments provide a more accessible and affordable alternative. This color evokes a sense of depth, stability, and trust, making it a popular choice in various design applications. Its commanding presence can add a touch of elegance to any visual composition.

The color #0B138C, a deep ultramarine, presents some accessibility challenges, especially concerning color contrast. When used as a foreground color, it requires a very light background to meet WCAG (Web Content Accessibility Guidelines) standards for readability. Conversely, if used as a background, a very bright foreground color is necessary. Text or interactive elements using this color should be tested with accessibility tools to ensure sufficient contrast ratios (at least 4.5:1 for normal text and 3:1 for large text). It's crucial to avoid pairing this color with other dark shades, as this would render content illegible for users with visual impairments. Careful consideration should also be given to users with color blindness, as certain color combinations might be difficult to distinguish. Implementing visual cues alongside color can further improve accessibility.

Shades

Digital Color Formats

RGB
11 19 140
RGB11 19 140
Red
Green
Blue
HSL
236.28deg 85.43% 29.61%
236.2885.4329.61HSL
Hue
Saturation
Lightness
HWB
236.28deg 4.31% 45.1%
236.284.3145.1HWB
Hue
Whiteness
Blackness
hex#0B138C
rgb11 19 140
hsl236.28deg 85.43% 29.61%
cmyk92.14% 86.43% 0% 45.1%
hwb236.28deg 4.31% 45.1%
xyz-d650.05 0.02 0.25
oklch0.3086 0.1873 266.58
oklab0.3086 -0.01 -0.19
CMYK
92.14% 86.43% 0% 45.1%
92.1486.43045.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.02 0.25
0.050.020.25XYZ
X
Y
Z
OKLCH
0.3086 0.1873 266.58
0.30860.1873266.58LCH
Lightness
Chroma
Hue
OKLAB
0.3086 -0.01 -0.19
0.3086-0.01-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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