All colors
CSS named colorOrange · mid · vivid
browser standard

#FF0000

Red

Best set with black text. The pairing reaches 5.25:1 contrast and passes AA for normal text.

Color values

copy exact values
HEX#FF0000sRGB hexadecimal
RGBrgb(255, 0, 0)screen channels
HSLhsl(0, 100%, 50%)hue, saturation, lightness
CMYKcmyk(0%, 100%, 100%, 0%)approximate process color
Tailwindred-600nearest palette utility, not an exact token

Foreground contrast

WCAG ratios
White textlarge text4.00:1
Black textAA5.25:1

Recommendation

Use black text for the stronger built-in pairing. AA requires 4.5:1 for normal text; AAA requires 7:1.

Palette relationships

generated in color space
Tonal ramp
#050505
#551A0D
#A61C0C
#FF0000
#FF7958
#FFBCA7
#FAFAFA
Analogous
#FF007F
#FF0000
#FF8000
Triadic
#FF0000
#00FF00
#0000FF
Complement
#FF0000
#00FFFF

Nearest named neighbors

Lab distance · lower is closer

CSS output

:root {
  --color-red: #FF0000;
}

.swatch {
  background: var(--color-red);
  color: #000000;
}
Hue40°
Lightness53 L*
Chroma104.6
Luminance0.213