International Klein Blue

#0635A8

General Information about International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein created IKB as part of his search to find a color that best represented his concepts of pure idea, the infinite and immateriality. The visual impact of IKB comes from its heavy reliance on ultramarine, as well as Klein's technique of using a synthetic resin binder that allows the pigment to maintain its original qualities. The color is registered as a trademark in Klein's name. IKB's specific shade of blue is widely recognized and associated with Klein's art and philosophy. It is now used in many facets of design and art, as well as a symbol of innovation and creativity. It offers a unique emotional effect, and it has become an iconic color in the art world.

The hex color #0635a8, also known as International Klein Blue, presents significant accessibility challenges due to its low luminance. With a very dark hue, it offers insufficient contrast against typical light backgrounds like white or light gray. This can cause readability issues for users, particularly those with visual impairments such as low vision or color blindness. To ensure accessibility, it's crucial to use this color sparingly and pair it with very light text or interface elements. Following WCAG guidelines for contrast ratios is essential. A contrast ratio of at least 4.5:1 for normal text and 3:1 for large text is recommended. Tools are available to check contrast ratios and suggest accessible color pairings. Consider providing alternative color schemes for users who may need them. Additionally, avoid using color alone to convey important information; always provide text labels or other visual cues.

Shades

Digital Color Formats

RGB
6 53 168
RGB6 53 168
Red
Green
Blue
HSL
222.59deg 93.1% 34.12%
222.5993.134.12HSL
Hue
Saturation
Lightness
HWB
222.59deg 2.35% 34.12%
222.592.3534.12HWB
Hue
Whiteness
Blackness
hex#0635A8
rgb6 53 168
hsl222.59deg 93.1% 34.12%
cmyk96.43% 68.45% 0% 34.12%
hwb222.59deg 2.35% 34.12%
xyz-d650.08 0.05 0.38
oklch0.3912 0.1891 263.35
oklab0.3912 -0.02 -0.19
CMYK
96.43% 68.45% 0% 34.12%
96.4368.45034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.05 0.38
0.080.050.38XYZ
X
Y
Z
OKLCH
0.3912 0.1891 263.35
0.39120.1891263.35LCH
Lightness
Chroma
Hue
OKLAB
0.3912 -0.02 -0.19
0.3912-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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