International Klein Blue

#002FB4

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine, as well as Klein's matte, synthetic resin binder which suspends the color pigment and allows the pigment to maintain as much of its original qualities as possible. Yves Klein registered this paint formula as a trademark under the name International Klein Blue (IKB) in 1957. This specific shade of blue is known for its intense and vibrant quality, and it has been widely used in various art forms, fashion, and design projects. The color evokes feelings of depth, infinity, and transcendence, making it a popular choice for artists seeking to create impactful and emotionally resonant works.

The color #002FB4, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its dark hue results in low contrast against light backgrounds, making text difficult to read for users with visual impairments. According to WCAG guidelines, sufficient contrast is crucial for readability. To improve accessibility, consider pairing #002FB4 with very light colors such as #FFFFFF or #F0F0F0 for text and interactive elements. Using a color contrast checker is highly recommended to ensure compliance with accessibility standards. In cases where using #002FB4 is essential, provide alternative styling options for users with low vision. Also consider the needs of colorblind users. It’s vital to ensure that information conveyed using this color is also available through alternative means, such as text labels or icons.

Shades

Digital Color Formats

RGB
0 47 180
RGB0 47 180
Red
Green
Blue
HSL
224.33 100% 35.29%
224.3310035.29HSL
Hue
Saturation
Lightness
HWB
224.33 0% 29.41%
224.33029.41HWB
Hue
Whiteness
Blackness
hex#002FB4
rgb0 47 180
hsl224.33 100% 35.29%
cmyk100% 73.89% 0% 29.41%
hwb224.33 0% 29.41%
xyz9.25 5.33 43.72
CMYK
100% 73.89% 0% 29.41%
10073.89029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
9.25 5.33 43.72
9.255.3343.72XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025