Cobalt

#0342B0

General Information about Cobalt (#0342B0)

The hex color #0342B0, commonly known as Cobalt, is a deep and vibrant shade of blue. It is composed of 1.18% red, 25.88% green, and 69.02% blue. In the RGB color model, it is represented as (3, 66, 176). Cobalt blue has a rich history, having been synthesized in the early 19th century as an alternative to the expensive ultramarine pigment. It has since been widely used in various applications, including fine art, ceramics, and textiles. Chemically, Cobalt blue is a pigment made by sintering cobalt(II) oxide with alumina at high temperatures. This process creates a spinel structure, which gives the pigment its characteristic intense blue color. The color is highly stable and resistant to fading, making it valuable in both artistic and industrial contexts.

The hex color #0342B0, also known as Cobalt, presents some accessibility challenges, particularly concerning color contrast. When used as a background color, it requires light-colored text to ensure readability. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text, as per WCAG guidelines. This deep blue hue may not provide sufficient contrast with darker shades, making text difficult to read for users with visual impairments. To enhance accessibility, consider using a color contrast checker to verify that the contrast ratio meets accessibility standards. Furthermore, avoid using this color for essential visual elements like links or buttons without proper text labels or sufficient contrast, as users may not be able to distinguish them easily. Providing alternative styling options or a high-contrast mode can also improve the user experience for individuals with disabilities.

Shades

Digital Color Formats

RGB
3 66 176
RGB3 66 176
Red
Green
Blue
HSL
218.15deg 96.65% 35.1%
218.1596.6535.1HSL
Hue
Saturation
Lightness
HWB
218.15deg 1.18% 30.98%
218.151.1830.98HWB
Hue
Whiteness
Blackness
hex#0342B0
rgb3 66 176
hsl218.15deg 96.65% 35.1%
cmyk98.3% 62.5% 0% 30.98%
hwb218.15deg 1.18% 30.98%
xyz-d650.1 0.07 0.42
oklch0.4233 0.1844 261.48
oklab0.4233 -0.03 -0.18
CMYK
98.3% 62.5% 0% 30.98%
98.362.5030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.07 0.42
0.10.070.42XYZ
X
Y
Z
OKLCH
0.4233 0.1844 261.48
0.42330.1844261.48LCH
Lightness
Chroma
Hue
OKLAB
0.4233 -0.03 -0.18
0.4233-0.03-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons