Red
Big Red
Big Red
#FF2121Click to copy
Big Red Parameter Conversion Table
More converters →HEX#FF2121Copy
RGBrgb(255, 33, 33)Copy
HSLhsl(0, 100%, 56%)Copy
HSV/HSBhsv(0, 87%, 100%)Copy
CMYKcmyk(0%, 87%, 87%, 0%)Copy
Big Red Color Schemes
Complementary
#FF2121
Click to copy#21FFFF
Click to copyAnalogous
#FF2190
Click to copy#FF9021
Click to copySplit Complementary
#21FF90
Click to copy#2190FF
Click to copyMonochromatic
#FF2121
Click to copy#F69090
Click to copy#FEEEEE
Click to copy#BA0000
Click to copy#540000
Click to copy#000000
Click to copyBig Red WCAG Accessibility Contrast
WCAG Calculator →The contrast ratio of this color against common foreground/background colors (based on the WCAG 2.1 standard)
Sample text Aa
White background #FFFFFF
3.82 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Black background #000000
5.49 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Light gray background #F5F5F5
3.51 : 1
AA NormalAA LargeAAA NormalAAA Large
Sample text Aa
Dark gray background #333333
3.30 : 1
AA NormalAA LargeAAA NormalAAA Large
Big Red Shade Variants
Gradient Generator →Lighten with White Mixed with white for a lighter, softer color
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Darken with Black Mixed with black for a deeper, heavier color
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Muted / Morandi Mixed with gray and desaturated for a sophisticated muted tone
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Big Red Color Introduction
Definition
Big Red (HEX #FF2121) has the RGB value rgb(255, 33, 33), the HSL value hsl(0°, 100%, 56%) and the CMYK print value cmyk(0%, 87%, 87%, 0%). In terms of color schemes, the complement of Big Red is #21FFFF, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #FF2190 and #FF9021 that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#21FF90, #2190FF) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Big Red uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Big Red has a contrast ratio of 3.82:1 against white and 5.49:1 against black; paired with a black background it reaches AA, making it suitable for text in dark mode.
Color Characteristics
Red is the most impactful color, evoking fire, blood and the sun. It grabs attention instantly and is almost the default choice in promotions, dining and sports. Specifically, Big Red has a lightness of 56% and a saturation of 100%, striking and generous as a background or primary color, offering good readability with either light or dark text; moreover, its saturation is extremely high and its visual tension is strong, so it works best used sparingly as a focal accent. In a word: Authentic Chinese red.
Color Psychology
Red can evoke passion, courage and urgency, with a marked arousing and motivating effect; psychologically it symbolizes enthusiasm, energy and drive. For this reason Big Red tends to leave a first impression of being passionate and direct in the viewer’s mind, and this emotional tone also defines the role it plays in design.
Best Uses
Red suits big promotions, restaurant menus, sports posters and any visual design that needs emotional intensity. In real projects, Big Red is also often used as a dark background or heading text color; in “Red”-themed designs, the adjacent colors or lightness gradients built around it quickly establish a cohesive, clearly layered color scheme.
Big Red Featured In
This color is included in the following color cards and color families. Click a card to browse more colors in the corresponding collection.