International Klein Blue

#031DB0

About International Klein Blue

International Klein Blue, often abbreviated 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 and its matte finish. Yves Klein registered this color as a trademark in 1957, although the trademark has been contested over the years, its impact in the art world cannot be denied. The pigment is created by suspending pure ultramarine pigment in a synthetic resin, allowing the color to retain its brilliance. IKB has since become a well-known and iconic color, used in art, fashion, and design. It has a distinct depth and intensity, making it a visually striking choice for many applications. IKB embodies creativity and visual impact.

The color #031DB0, a deep, saturated blue, presents significant accessibility challenges, especially concerning color contrast. When used as a background color, it necessitates very light text (white or near-white) to achieve sufficient contrast ratios as defined by WCAG guidelines. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Failure to meet these ratios makes content difficult to read, particularly for users with visual impairments. When used for text, the same contrast considerations apply, requiring a very light background. Careful consideration should be given to interactive elements like buttons and links. Ensure that sufficient visual cues beyond color alone are provided to indicate their state (e.g., underlines, borders, icons) to accommodate users who are colorblind. Testing with accessibility tools and users with visual impairments is essential to validate the accessibility of designs employing this color.

Shades

Digital Color Formats

RGB
3 29 176
RGB3 29 176
Red
Green
Blue
HSL
230.98 96.65% 35.1%
230.9896.6535.1HSL
Hue
Saturation
Lightness
HWB
230.98 1.18% 30.98%
230.981.1830.98HWB
Hue
Whiteness
Blackness
hex#031DB0
rgb3 29 176
hsl230.98 96.65% 35.1%
cmyk98.3% 83.52% 0% 30.98%
hwb230.98 1.18% 30.98%
xyz8.31 4.03 41.41
CMYK
98.3% 83.52% 0% 30.98%
98.383.52030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.31 4.03 41.41
8.314.0341.41XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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