#FF4040#FF4040

#FF4040 is a light, highly saturated red. Relative luminance 0.253; OKLCH L 66.0% C 0.227 H 26.0°. Best body text is #000000 at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#FF4040
RGB	rgb(255, 64, 64)
HSL	hsl(0, 100%, 63%)
HSV	hsv(0, 75%, 100%)
CMYK	cmyk(0%, 74.9%, 74.9%, 0%)
CIE-LAB	lab(57.37, 70.55, 44.82)
CIE-LCH	lch(57.37, 83.58, 32.43°)
OKLab	oklab(65.97% 0.2037 0.0995)
OKLCH	oklch(65.97% 0.227 26)
XYZ	xyz(44.0040, 25.3039, 7.4166)
Luminance	0.2530 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF4040 #40FFFF

analogous

#FF409F #FF4040 #FF9F40

triadic

#FF4040 #40FF40 #4040FF

tetradic

#FF4040 #9FFF40 #40FFFF #9F40FF

square

#FF4040 #9FFF40 #40FFFF #9F40FF

split-complementary

#FF4040 #40FF9F #409FFF

monochromatic

#C50000 #FF0303 #FF4040 #FF7D7D #FFBABA

Accessibility & contrast

On white

3.47

#FF4040 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.06

#FF4040 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF4040

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF4040	#FFFFFF	#000000	##000000
##FF4040	1.00	3.47	6.06	6.06
#FFFFFF	3.47	1.00	21.00	21.00
#000000	6.06	21.00	1.00	1.00
##000000	6.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A6F3E

Deuteranopia (green-blind)

#AA9938

Tritanopia (blue-blind)

#FF0043

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #ff4040;
/* rgb */ color: rgb(255, 64, 64);
/* oklch */ color: oklch(66.0% 0.227 26.0);

Tailwind

colors: {
  custom: {
    50: '#ff8375',
    500: '#ff4040',
    950: '#000000',
  },
}

SCSS

$custom: #ff4040;
$custom-light: #ff8375;
$custom-dark: #000000;

JSON

{
  "hex": "#ff4040",
  "rgb": {
    "r": 255,
    "g": 64,
    "b": 64
  },
  "hsl": {
    "h": 0,
    "s": 100,
    "l": 62.549
  },
  "oklch": {
    "l": 0.65975,
    "c": 0.22668,
    "h": 26
  },
  "luminance": 0.25297
}

Semantic roles & 50–950 ramp

primary

#FF4040

secondary

#ABF0F0

accent

#E5E600

background

#FFF8F7

surface

#FFF0ED

border

#D7CBC8

text

#1B0C08

muted

#887D7B

Preview Lab

Preview with #FF4040

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

Preview Lab → · Contrast checker → · Palette generator →