#FF5151#FF5151

#FF5151 is a light, highly saturated red. Relative luminance 0.277; OKLCH L 67.7% C 0.211 H 24.7°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#FF5151
RGB	rgb(255, 81, 81)
HSL	hsl(0, 100%, 66%)
HSV	hsv(0, 68%, 100%)
CMYK	cmyk(0%, 68.2%, 68.2%, 0%)
CIE-LAB	lab(59.66, 65.52, 38.06)
CIE-LCH	lch(59.66, 75.77, 30.15°)
OKLab	oklab(67.75% 0.1912 0.0881)
OKLCH	oklch(67.75% 0.211 24.7)
XYZ	xyz(45.6726, 27.7456, 10.7335)
Luminance	0.2774 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF5151 #51FFFF

analogous

#FF51A8 #FF5151 #FFA851

triadic

#FF5151 #51FF51 #5151FF

tetradic

#FF5151 #A8FF51 #51FFFF #A851FF

square

#FF5151 #A8FF51 #51FFFF #A851FF

split-complementary

#FF5151 #51FFA8 #51A8FF

monochromatic

#D60000 #FF1414 #FF5151 #FF8E8E #FFCBCB

Accessibility & contrast

On white

3.21

#FF5151 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#FF5151 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF5151

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF5151	#FFFFFF	#000000	##000000
##FF5151	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#82784F

Deuteranopia (green-blind)

#AD9D4C

Tritanopia (blue-blind)

#FF1A53

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #ff5151;
/* rgb */ color: rgb(255, 81, 81);
/* oklch */ color: oklch(67.7% 0.211 24.7);

Tailwind

colors: {
  custom: {
    50: '#ff8c82',
    500: '#ff5151',
    950: '#000000',
  },
}

SCSS

$custom: #ff5151;
$custom-light: #ff8c82;
$custom-dark: #000000;

JSON

{
  "hex": "#ff5151",
  "rgb": {
    "r": 255,
    "g": 81,
    "b": 81
  },
  "hsl": {
    "h": 0,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.67748,
    "c": 0.21052,
    "h": 24.7
  },
  "luminance": 0.27739
}

Semantic roles & 50–950 ramp

primary

#FF5151

secondary

#B9F3F3

accent

#E5E600

background

#FFF9F7

surface

#FFF1EE

border

#D7CBC9

text

#1A0D0A

muted

#877E7C

Preview Lab

Preview with #FF5151

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →