International Klein Blue

#111AB9

About International Klein Blue

The hex color #111AB9 is a deep, saturated blue often associated with the name International Klein Blue (IKB). This color is a vivid shade of blue that's near ultramarine. Hex color codes are a way to represent colors in HTML, CSS, and other web technologies. The # symbol indicates that what follows is a hexadecimal number. In this case, the hexadecimal number 111AB9 represents the color. The first two characters (11) represent the red component, the next two (1A) represent the green component, and the last two (B9) represent the blue component. Each component can range from 00 to FF, with 00 being the lowest intensity and FF being the highest. IKB is a color that is closely associated with the french artist Yves Klein, who registered this shade of blue.

The hex color #111AB9, representing International Klein Blue, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value results in poor contrast against both white and black backgrounds, making text and interactive elements difficult to discern. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. This color fails to meet these recommendations, potentially excluding users with low vision or color blindness. To improve accessibility, consider pairing this deep blue with much lighter shades of yellow, white, or analogous light blue. Furthermore, avoid using it for critical interface elements without adequate contrast, as this can hinder usability for a wide range of users. Ensure sufficient spacing and sizing of elements using this color to further enhance readability and interaction.

Shades

Digital Color Formats

RGB
17 26 185
RGB17 26 185
Red
Green
Blue
HSL
236.79deg 83.17% 39.61%
236.7983.1739.61HSL
Hue
Saturation
Lightness
HWB
236.79deg 6.67% 27.45%
236.796.6727.45HWB
Hue
Whiteness
Blackness
hex#111AB9
rgb17 26 185
hsl236.79deg 83.17% 39.61%
cmyk90.81% 85.95% 0% 27.45%
hwb236.79deg 6.67% 27.45%
xyz-d650.09 0.04 0.46
oklch0.3759 0.232 266.41
oklab0.3759 -0.01 -0.23
CMYK
90.81% 85.95% 0% 27.45%
90.8185.95027.45CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.04 0.46
0.090.040.46XYZ
X
Y
Z
OKLCH
0.3759 0.232 266.41
0.37590.232266.41LCH
Lightness
Chroma
Hue
OKLAB
0.3759 -0.01 -0.23
0.3759-0.01-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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