International Klein Blue

#0034A3

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color to maintain its unique identity and association with his artistic creations. Chemically, IKB is a matte version of ultramarine blue. The vividness and intensity of IKB make it visually striking and memorable. In color psychology, deep blues are often associated with trust, loyalty, wisdom, confidence, intelligence, faith, truth, and heaven. It is a color often used by corporate entities and is often used in logos and branding. The hex code #0034A3 represents this specific shade within the digital color spectrum, enabling its consistent reproduction across various media.

The hex color #0034a3, also known as International Klein Blue, presents specific accessibility considerations for web design. Its relatively dark hue necessitates careful selection of foreground text colors to ensure sufficient contrast, particularly 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. White (#FFFFFF) or very light shades of yellow or green would generally provide adequate contrast against this dark blue. It's essential to use contrast checker tools to verify compliance. Avoid pairing #0034a3 with other dark colors, as this can lead to illegibility. When using this color for interactive elements like buttons or links, provide clear visual cues for hover and focus states to enhance usability and accessibility for all users, including those who rely on keyboard navigation.

Shades

Digital Color Formats

RGB
0 52 163
RGB0 52 163
Red
Green
Blue
HSL
220.86deg 100% 31.96%
220.8610031.96HSL
Hue
Saturation
Lightness
HWB
220.86deg 0% 36.08%
220.86036.08HWB
Hue
Whiteness
Blackness
hex#0034A3
rgb0 52 163
hsl220.86deg 100% 31.96%
cmyk100% 68.1% 0% 36.08%
hwb220.86deg 0% 36.08%
xyz-d650.08 0.05 0.35
oklch0.3831 0.1848 262.54
oklab0.3831 -0.02 -0.18
CMYK
100% 68.1% 0% 36.08%
10068.1036.08CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.05 0.35
0.080.050.35XYZ
X
Y
Z
OKLCH
0.3831 0.1848 262.54
0.38310.1848262.54LCH
Lightness
Chroma
Hue
OKLAB
0.3831 -0.02 -0.18
0.3831-0.02-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons