Crimson
Crimson Parameter Conversion Table
More converters →Crimson Color Schemes
Crimson WCAG Accessibility Contrast
WCAG Calculator →The contrast ratio of this color against common foreground/background colors (based on the WCAG 2.1 standard)
Crimson Shade Variants
Gradient Generator →Crimson Color Introduction
Definition
Crimson (HEX #FF6B6B) has the RGB value rgb(255, 107, 107), the HSL value hsl(0°, 100%, 71%) and the CMYK print value cmyk(0%, 58%, 58%, 0%). In terms of color schemes, the complement of Crimson is #6BFFFF, and placing the two side by side produces a striking, eye-catching contrast; paired with the analogous colors #FF6BB5 and #FFB56B that sit next to it on the color wheel, it transitions naturally and harmoniously; in a split-complementary scheme (#6BFFB5, #6BB5FF) it keeps its contrast tension without losing layering; and a monochromatic scheme built on Crimson uses gradients of lightness and saturation to create a unified design with a strong sense of depth. Under the WCAG accessibility standard, Crimson has a contrast ratio of 2.78:1 against white and 7.57:1 against black; paired with a black background it reaches AAA, making it ideal for text and accent colors 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, Crimson has a lightness of 71% and a saturation of 100%, bright and airy, ideal as a light background or accent color that creates a soft, comfortable atmosphere; 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: A light red like a peach blossom just opening, soft and elegant; often an accent color in scholars’ painting and calligraphy, and used for the trim of classical clothing.
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 Crimson 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, Crimson is also often used as a light background or supporting negative space; in “Red”-themed designs, the adjacent colors or lightness gradients built around it quickly establish a cohesive, clearly layered color scheme.
Crimson 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.



