International Klein Blue

#0321B1

About International Klein Blue

International Klein Blue (IKB), also known as #0321B1, is a deep blue hue first mixed by the French artist Yves Klein. This specific shade of blue was synthetically created and patented by Klein as a medium that would best maintain the color's brilliance and intensity. IKB is known for its ultramarine appearance, and its ability to evoke feelings of depth, infinity, and spirituality. Chemically, the color contains a synthetic ultramarine pigment suspended in a clear resin binder. It became a signature element in Klein's artistic creations, including monochrome paintings and sculptures, representing his exploration of pure color and its emotional impact. The color is considered a symbol of modern art.

The hex color #0321b1, also known as International Klein Blue, presents significant accessibility challenges. Its extremely low luminance value makes it unsuitable for use as text on a white background, as it fails to meet WCAG (Web Content Accessibility Guidelines) contrast ratio requirements for readability. To ensure accessibility, it's crucial to pair this color with a very light color for text or interactive elements. A contrast ratio of at least 4.5:1 for normal text and 3:1 for large text is recommended. Using tools to check color contrast is essential. Avoid using this color for essential UI elements without careful consideration of contrast. When used as a background, ensure that all foreground elements have sufficient contrast. Providing alternative high-contrast themes or allowing users to customize the color scheme can also improve accessibility. It's also wise to avoid using it for color-blind users as they might not see it properly.

Shades

Digital Color Formats

RGB
3 33 177
RGB3 33 177
Red
Green
Blue
HSL
229.66 96.67% 35.29%
229.6696.6735.29HSL
Hue
Saturation
Lightness
HWB
229.66 1.18% 30.59%
229.661.1830.59HWB
Hue
Whiteness
Blackness
hex#0321B1
rgb3 33 177
hsl229.66 96.67% 35.29%
cmyk98.31% 81.36% 0% 30.59%
hwb229.66 1.18% 30.59%
xyz8.52 4.28 41.97
CMYK
98.31% 81.36% 0% 30.59%
98.3181.36030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.52 4.28 41.97
8.524.2841.97XYZ
X
Y
Z

Alternative colors

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