Skip to content

Red (#FF0000)

The hex code for Red is #FF0000. It is rgb(255, 0, 0) in RGB, hsl(0, 100%, 50%) in HSL, and about cmyk(0%, 100%, 100%, 0%) in CMYK — a mid-tone red. Black text is the more readable choice on this background.

#FF0000
HEX#FF0000
RGBrgb(255, 0, 0)
HSLhsl(0, 100%, 50%)
HSVhsv(0, 100%, 100%)
CMYKcmyk(0%, 100%, 100%, 0%)
OKLCHoklch(62.8% 0.258 29.2)
LABlab(54.29% 80.80 69.89)
LCHlch(54.29% 106.84 40.86)

Colors Closest to Red

Red is a registered color name. These are the named colors nearest to it, measured as CIE76 distance in CIELAB — a perceptual scale, so the ordering matches what the eye sees rather than how close the raw RGB numbers happen to sit.

Browse the full index of named colors A-Z or every red in the library.

#FF0000 Channel Values

How Red breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 255 · G 0 · B 08-bit channels as sent to the display
HSLH 0° · S 100% · L 50%Easiest model for building lighter and darker variants
HSVH 0° · S 100% · V 100%Matches the picker in most design tools
CMYKC 0% · M 100% · Y 100% · K 0%Approximate ink mix; confirm with an ICC profile before printing
Luminance4:1 vs white · 5.25:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Red background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

Fails AAWhite text4:1AA normal AA large AAA normal
TextBlack text5.25:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #FF0000 in the contrast checker.

Colors That Go With Red

Pairings derived from color-wheel relationships. The complementary color sits opposite Red; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
Complementary
Analogous
Analogous
Triadic
Triadic
Split comp.
Split comp.

Tints & Shades of Red

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #FF0000.

How Red Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#FF0000
Protanopia#737300
Protanomaly#BC5A00
Deuteranopia#9C9C00
Deuteranomaly#CB7B00
Tritanopia#FF0000
Tritanomaly#FF0000
Achromatopsia#7F7F7F

Test a full palette in the color blindness simulator.

Using #FF0000 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--red: #FF0000;
CSS backgroundbackground-color: #FF0000;
Tailwind configcolors: { 'red': '#FF0000' }
SwiftUIColor(red: 1.000, green: 0.000, blue: 0.000)
Android XML<color name="red">#FF0000</color>
SVG fillfill="#FF0000"

More Red Colors

Red sits in the red family. These are its neighbours across that family's full range, each with its own breakdown.

#FF0000 Frequently Asked Questions

What is the hex code for Red?

The hex code for Red is #FF0000. That is rgb(255, 0, 0) in RGB, hsl(0, 100%, 50%) in HSL, and approximately cmyk(0%, 100%, 100%, 0%) in CMYK.

What is the RGB value of #FF0000?

#FF0000 is rgb(255, 0, 0) — red 255, green 0, and blue 0 on the 0-255 scale.

What is the CMYK value of #FF0000?

#FF0000 converts to approximately cmyk(0%, 100%, 100%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #FF0000 be black or white?

Black text is the more readable choice. #FF0000 scores 4:1 against white and 5.25:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Is Red a CSS named color?

Yes. Red is one of the CSS named colors, so you can write color: red instead of the hex code.

Open Red in a Tool

Keep exploring: every red in the color library, the guide to shades of red, or the full color library.