#FF4731#FF4731

#FF4731 is a light, highly saturated red. Relative luminance 0.260; OKLCH L 66.4% C 0.223 H 30.5°. Best body text is #000000 at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#FF4731
RGB	rgb(255, 71, 49)
HSL	hsl(6, 100%, 60%)
HSV	hsv(6, 81%, 100%)
CMYK	cmyk(0%, 72.2%, 80.8%, 0%)
CIE-LAB	lab(58.03, 67.84, 53.25)
CIE-LCH	lch(58.03, 86.24, 38.13°)
OKLab	oklab(66.42% 0.1923 0.1134)
OKLCH	oklch(66.42% 0.223 30.5)
XYZ	xyz(44.0529, 25.9951, 5.6031)
Luminance	0.2599 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF4731 #31E9FF

analogous

#FF3182 #FF4731 #FFAE31

triadic

#FF4731 #31FF47 #4731FF

tetradic

#FF4731 #82FF31 #31E9FF #AE31FF

square

#FF4731 #82FF31 #31E9FF #AE31FF

split-complementary

#FF4731 #31FFAE #3182FF

monochromatic

#B61300 #F31A00 #FF4731 #FF7E6E #FFB4AB

Accessibility & contrast

On white

3.39

#FF4731 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.20

#FF4731 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF4731

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF4731	#FFFFFF	#000000	##000000
##FF4731	1.00	3.39	6.20	6.20
#FFFFFF	3.39	1.00	21.00	21.00
#000000	6.20	21.00	1.00	1.00
##000000	6.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F722C

Deuteranopia (green-blind)

#AC9A27

Tritanopia (blue-blind)

#FF0044

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #ff4731;
/* rgb */ color: rgb(255, 71, 49);
/* oklch */ color: oklch(66.4% 0.223 30.5);

Tailwind

colors: {
  custom: {
    50: '#ff866c',
    500: '#ff4731',
    950: '#000000',
  },
}

SCSS

$custom: #ff4731;
$custom-light: #ff866c;
$custom-dark: #000000;

JSON

{
  "hex": "#ff4731",
  "rgb": {
    "r": 255,
    "g": 71,
    "b": 49
  },
  "hsl": {
    "h": 6.408,
    "s": 100,
    "l": 59.608
  },
  "oklch": {
    "l": 0.66423,
    "c": 0.22329,
    "h": 30.5
  },
  "luminance": 0.25988
}

Semantic roles & 50–950 ramp

primary

#FF4731

secondary

#9EE5EE

accent

#E8FF29

background

#FFF8F6

surface

#FFF0EB

border

#D7CBC6

text

#1B0C07

muted

#887D7A

Preview Lab

Preview with #FF4731

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

Preview Lab → · Contrast checker → · Palette generator →