Hex Color Code #FF0400 — RGB & HSL Conversions
How to use the #FF0400 color code in HTML & CSS?
To apply the hex color #FF0400 in web design, set the color property inside your CSS stylesheet. For example, adding background-color: #FF0400; will paint elements in this warm undertone shade. In modern CSS structures, you can configure it as a custom variable --color-hex: #FF0400; or utilize it directly in Tailwind CSS via arbitrary utility values like bg-[#FF0400].
What are the RGB and HSL conversion values for #FF0400?
In the digital sRGB color space, the hex value #FF0400 is converted to RGB values of Red: 255, Green: 4, and Blue: 0. When analyzed under the HSL model, its coordinates correspond to hue angle 1°, 100% saturation, and 50% lightness. This makes it visually a balanced medium tone with a highly vivid, intense, and brilliant shade.
CMYK print code settings for #FF0400
When converting #FF0400 for CMYK printing, the color separation consists of 0% Cyan, 98% Magenta, 100% Yellow, and 0% key/black. Given its red-channel dominance, this color is a powerful visual stimulator often deployed in banners, call-to-actions, and warning components.
HEX #FF0400 Color Space Conversions
Click to copy formatContrast & Accessibility (WCAG 2.1) Check
White text readability test with #FF0400
Small body copy preview
Black text readability test with #FF0400
Small body copy preview
Complementary & Analogous Harmonies
Computed dynamicallyShades & Tints Generator Matrix
Copy shade hex values instantlyDarker Shades (Adding Black)
Lighter Tints (Adding White)
CSS Custom Properties (Variables)
--color-hex: #FF0400;
--color-rgb: rgb(255, 4, 0);
--color-hsl: hsl(1deg, 100%, 50%);