Blue Gem

#280F8C

General Information about #280F8C

The hexadecimal color #280F8C, often referred to as Blue Gem, is a deep, rich shade of blue with violet undertones. It belongs to the blue-violet color family and evokes feelings of royalty, sophistication, and mystery. This color is created by mixing small amounts of red and green light with a dominant amount of blue light. In the RGB color model, it consists of 15.7% red, 5.9% green, and 54.9% blue. In the CMYK color model, used for printing, it is composed of 71% cyan, 89% magenta, 0% yellow, and 45% black. The HSV (hue, saturation, value) values are 251 degrees for hue, 89% for saturation, and 55% for value. This means that Blue Gem is a highly saturated color with a moderate brightness level. This color can be seen as dark, but also as vivid, strong and powerful.

The hex color #280F8C, also known as Blue Gem, presents accessibility challenges due to its dark nature. When used as a background color, it requires very light text (white or near-white) to ensure sufficient contrast for readability, meeting WCAG (Web Content Accessibility Guidelines) standards for contrast ratios. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Insufficient contrast can make content difficult or impossible to read for users with visual impairments, including those with low vision or color blindness. When using this color for interactive elements like buttons or links, ensure that hover and focus states also maintain adequate contrast. It's important to test color combinations with accessibility tools to verify compliance. Avoid pairing this dark color with other dark colors as this will certainly lead to very poor contrast. Consider adding a white or light border around elements using #280F8C to help them stand out against other elements, or consider using #280F8C sparingly.

Shades

Digital Color Formats

RGB
40 15 140
RGB40 15 140
Red
Green
Blue
HSL
252deg 80.65% 30.39%
25280.6530.39HSL
Hue
Saturation
Lightness
HWB
252deg 5.88% 45.1%
2525.8845.1HWB
Hue
Whiteness
Blackness
hex#280F8C
rgb40 15 140
hsl252deg 80.65% 30.39%
cmyk71.43% 89.29% 0% 45.1%
hwb252deg 5.88% 45.1%
xyz-d650.06 0.03 0.25
oklch0.321 0.1825 277.7
oklab0.321 0.02 -0.18
CMYK
71.43% 89.29% 0% 45.1%
71.4389.29045.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.03 0.25
0.060.030.25XYZ
X
Y
Z
OKLCH
0.321 0.1825 277.7
0.3210.1825277.7LCH
Lightness
Chroma
Hue
OKLAB
0.321 0.02 -0.18
0.3210.02-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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