International Klein Blue

#0A28AA

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0A28AA, is a deep and intense shade of blue. It's named after the French artist Yves Klein, who registered this particular hue as a trademark. Klein used this color extensively in his monochrome paintings, seeking to evoke a sense of boundlessness and spiritual depth. Chemically, the color is a synthetic ultramarine, created by mixing a binder with pure ultramarine pigment. It's known for its matte finish, which enhances the color's saturation and intensity. In color psychology, deep blues are often associated with stability, trust, and intelligence, making it a popular choice for branding and design elements where conveying these qualities is important.

The hex color #0a28aa, also known as International Klein Blue, presents several accessibility considerations for web development. Its strong blue hue provides a distinct visual experience. However, its contrast ratio against white text can be a concern. It's crucial to ensure sufficient contrast, ideally meeting WCAG (Web Content Accessibility Guidelines) standards, by using a lighter text color such as white or a very pale yellow. When using this color as a background, avoid pairing it with similar dark colors for text, as readability will be significantly reduced. The color should not be the sole means of conveying important information; always include alternative cues, like text labels or icons, to accommodate users with color vision deficiencies. Thoughtful design ensures an inclusive experience for all users, regardless of their visual abilities. When used for links, consider adding an underline or a contrasting background on hover or focus states to make them easily identifiable.

Shades

Digital Color Formats

RGB
10 40 170
RGB10 40 170
Red
Green
Blue
HSL
228.75 88.89% 35.29%
228.7588.8935.29HSL
Hue
Saturation
Lightness
HWB
228.75 3.92% 33.33%
228.753.9233.33HWB
Hue
Whiteness
Blackness
hex#0A28AA
rgb10 40 170
hsl228.75 88.89% 35.29%
cmyk94.12% 76.47% 0% 33.33%
hwb228.75 3.92% 33.33%
xyz8.14 4.48 38.47
CMYK
94.12% 76.47% 0% 33.33%
94.1276.47033.33CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.14 4.48 38.47
8.144.4838.47XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025