Ultramarine

#040B99

About Ultramarine

The hex color #040b99, commonly known as Ultramarine, is a deep and intense shade of blue. It is positioned within the blue color spectrum, closer to indigo, characterized by its strong saturation and relatively low brightness. In the RGB color model, it consists of 1.6% red, 4.3% green, and 60% blue. The name 'Ultramarine' originates from the Latin 'ultramarinus,' meaning 'beyond the sea,' reflecting its historical derivation from the pigment ground from lapis lazuli imported from Asia. Historically, ultramarine was highly prized and expensive, reserved for significant artistic works. Today, synthetic ultramarine provides a more accessible alternative, but it still retains its association with depth and richness. It evokes feelings of calmness, authority, and sophistication, making it suitable for various design applications.

The hex color #040b99, also known as Ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its extremely low luminance value means that text or interactive elements using this color as a background or foreground will likely fail accessibility standards. According to WCAG guidelines, sufficient contrast between foreground and background colors is crucial for readability. To ensure accessibility, it is imperative to use a very light color for text or interactive elements placed on an Ultramarine background. Tools that measure color contrast ratios should be employed during design and development to verify compliance. Furthermore, providing alternative visual cues besides color, such as text labels or icons, is beneficial for users who cannot distinguish color differences. Avoid using #040b99 for critical information or actions without incorporating high-contrast elements.

Shades

Digital Color Formats

RGB
4 11 153
RGB4 11 153
Red
Green
Blue
HSL
237.18deg 94.9% 30.78%
237.1894.930.78HSL
Hue
Saturation
Lightness
HWB
237.18deg 1.57% 40%
237.181.5740HWB
Hue
Whiteness
Blackness
hex#040B99
rgb4 11 153
hsl237.18deg 94.9% 30.78%
cmyk97.39% 92.81% 0% 40%
hwb237.18deg 1.57% 40%
xyz-d650.06 0.03 0.3
oklch0.3173 0.208 264.98
oklab0.3173 -0.02 -0.21
CMYK
97.39% 92.81% 0% 40%
97.3992.81040CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.03 0.3
0.060.030.3XYZ
X
Y
Z
OKLCH
0.3173 0.208 264.98
0.31730.208264.98LCH
Lightness
Chroma
Hue
OKLAB
0.3173 -0.02 -0.21
0.3173-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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