International Klein Blue

#041EAC

General Information about International Klein Blue

International Klein Blue (IKB), also known by its hex code #041EAC, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, although the validity of this registration has been debated over time. IKB's visual impact comes from its reliance on ultramarine pigment, as well as Klein's strategy of using a matte, synthetic resin binder that allows the pigment to retain its full intensity and luminosity. The color has a unique, almost velvety appearance that sets it apart from other blues. Its strong presence and memorable association with the artist Yves Klein has made it a popular choice in art, design, and fashion.

The hex color #041EAC, also known as International Klein Blue, presents several accessibility challenges, especially in web design. Its dark and saturated nature means it offers low contrast when paired with lighter shades, potentially making text or interactive elements difficult to read for users with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. To ensure accessibility, avoid using #041EAC for text or important UI elements against light backgrounds. If it's essential to use this color, consider pairing it with very light shades like white (#FFFFFF) or very light grays to maximize contrast. Additionally, providing alternative visual cues, such as icons or underlines, can help users perceive information, regardless of their ability to distinguish color differences. Testing the color combination with accessibility evaluation tools is crucial to validate compliance with accessibility standards.

Shades

Digital Color Formats

RGB
4 30 172
RGB4 30 172
Red
Green
Blue
HSL
230.71deg 95.45% 34.51%
230.7195.4534.51HSL
Hue
Saturation
Lightness
HWB
230.71deg 1.57% 32.55%
230.711.5732.55HWB
Hue
Whiteness
Blackness
hex#041EAC
rgb4 30 172
hsl230.71deg 95.45% 34.51%
cmyk97.67% 82.56% 0% 32.55%
hwb230.71deg 1.57% 32.55%
xyz-d650.08 0.04 0.39
oklch0.3607 0.2168 264.7
oklab0.3607 -0.02 -0.22
CMYK
97.67% 82.56% 0% 32.55%
97.6782.56032.55CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.39
0.080.040.39XYZ
X
Y
Z
OKLCH
0.3607 0.2168 264.7
0.36070.2168264.7LCH
Lightness
Chroma
Hue
OKLAB
0.3607 -0.02 -0.22
0.3607-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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