Red Color — HEX, RGB, HSL, Palettes & Contrast

Red (#ff0000): Complete color reference with HEX, RGB, HSL values, tints & shades, complementary, analogous, triadic, split-complementary, and tetradic palettes, WCAG contrast recommendations, and ready-to-use CSS code.

#ff0000
HEX #ff0000
RGB rgb(255, 0, 0)
HSL 0°, 100%, 50%

Use Red in Your Projects

About Red Color

Red is a bold, energetic color that evokes passion, urgency, and excitement. It is widely used for call-to-action buttons, error states, and brand accents.

Use Cases for Red

CTA buttonserror statesbrand accentwarning signssale tags

Shades & Tints of Red

#ffffff
#ffbfbf
#ff8080
#ff4040
#ff0000
#bf0000
#800000
#400000
#000000

Complementary Color

#ff0000
#00ffff

Analogous Colors

#ff0080
#ff0000
#ff8000

Triadic Colors

#ff0000
#00ff00
#0000ff

Split Complementary

#ff0000
#00ff80
#0080ff

Tetradic Colors

#ff0000
#ffff00
#00ffff
#0000ff

CSS Code

.red-color {
  color: #ff0000;
  background-color: #ff0000;
}

/* As a CSS custom property */
:root {
  --color-red: #ff0000;
}

Accessibility Score

75 / 100
Rating: Good
AA contrast on best text color (30 pts)
AAA contrast on best text color (25 pts)
Versatile lightness for backgrounds & text (25 pts)
Not extreme black/white (20 pts)

A combined score based on WCAG contrast compliance, lightness versatility, and usable range. Higher scores mean the color works well in more design contexts.

Contrast Recommendations

Black text on Red
Ratio: 5.25:1 ✓ Passes AA ✗ Fails AAA
White text on Red
Ratio: 4:1 ✗ Fails AA ✗ Fails AAA

Frequently Asked Questions

What color is Red?

Red is represented by the hex code #ff0000 and has RGB values of rgb(255, 0, 0). It falls under the Red category.

How to use Red in web design?

Red works well for CTA buttons, error states, brand accent. Red is a bold, energetic color that evokes passion, urgency, and excitement. It is widely used for call-to-action buttons, error states, and brand accents. Use it as a primary color, accent, or background depending on your design needs.

What colors go with Red?

Colors that pair well with Red include crimson, firebrick, darkred, tomato, coral. For a complementary scheme, try #00ffff. For an analogous scheme, use #ff0080 and #ff8000. For a triadic scheme, combine with #00ff00 and #0000ff.