Ultramarine

#040B9F

General Information about Ultramarine

Ultramarine, represented by the hex code #040B9F, is a deep, intense shade of blue. Historically, ultramarine was derived from the precious stone lapis lazuli, making it a highly valued pigment used primarily in Renaissance paintings. Its name originates from the Latin 'ultramarinus,' meaning 'beyond the sea,' referring to its origin from overseas. Today, synthetic ultramarine is readily available, offering the same vibrant hue at a fraction of the cost. In color psychology, ultramarine is often associated with royalty, wisdom, and spirituality. It is considered a cool color that can evoke feelings of calmness and tranquility. Its deep tone makes it a versatile color for various applications, from art and design to fashion and branding, adding a touch of elegance and sophistication wherever it's used.

The color #040B9F, a deep shade of ultramarine, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value of approximately 0.004 makes it difficult to achieve sufficient contrast against lighter backgrounds. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. This dark blue hue will likely fail to meet these ratios with many common background colors, potentially rendering text illegible for some users. To improve accessibility, consider using a much lighter color for text or interface elements displayed against this background. Alternatively, providing sufficient spacing and visual cues can help compensate for the lack of contrast. Testing with accessibility evaluation tools and feedback from users with disabilities are crucial to ensure inclusivity.

Shades

Digital Color Formats

RGB
4 11 159
RGB4 11 159
Red
Green
Blue
HSL
237.29deg 95.09% 31.96%
237.2995.0931.96HSL
Hue
Saturation
Lightness
HWB
237.29deg 1.57% 37.65%
237.291.5737.65HWB
Hue
Whiteness
Blackness
hex#040B9F
rgb4 11 159
hsl237.29deg 95.09% 31.96%
cmyk97.48% 93.08% 0% 37.65%
hwb237.29deg 1.57% 37.65%
xyz-d650.06 0.03 0.33
oklch0.3257 0.2145 264.91
oklab0.3257 -0.02 -0.21
CMYK
97.48% 93.08% 0% 37.65%
97.4893.08037.65CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.03 0.33
0.060.030.33XYZ
X
Y
Z
OKLCH
0.3257 0.2145 264.91
0.32570.2145264.91LCH
Lightness
Chroma
Hue
OKLAB
0.3257 -0.02 -0.21
0.3257-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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