#FF3537#FF3537

#FF3537 is a light, highly saturated red. Relative luminance 0.241; OKLCH L 65.1% C 0.235 H 26.4°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#FF3537
RGB	rgb(255, 53, 55)
HSL	hsl(359, 100%, 60%)
HSV	hsv(359, 79%, 100%)
CMYK	cmyk(0%, 79.2%, 78.4%, 0%)
CIE-LAB	lab(56.18, 73.35, 48.38)
CIE-LCH	lch(56.18, 87.87, 33.41°)
OKLab	oklab(65.06% 0.2107 0.1047)
OKLCH	oklch(65.06% 0.235 26.4)
XYZ	xyz(43.2080, 24.0891, 5.9883)
Luminance	0.2408 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF3537 #35FFFD

analogous

#FF359C #FF3537 #FF9835

triadic

#FF3537 #37FF35 #3537FF

tetradic

#FF3537 #9CFF35 #35FFFD #9835FF

square

#FF3537 #9CFF35 #35FFFD #9835FF

split-complementary

#FF3537 #35FF98 #359CFF

monochromatic

#BA0002 #F70002 #FF3537 #FF7274 #FFAFB0

Accessibility & contrast

On white

3.61

#FF3537 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#FF3537 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF3537

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF3537	#FFFFFF	#000000	##000000
##FF3537	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#766B34

Deuteranopia (green-blind)

#A8962D

Tritanopia (blue-blind)

#FF0039

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #ff3537;
/* rgb */ color: rgb(255, 53, 55);
/* oklch */ color: oklch(65.1% 0.235 26.4);

Tailwind

colors: {
  custom: {
    50: '#ff7f6f',
    500: '#ff3537',
    950: '#000000',
  },
}

SCSS

$custom: #ff3537;
$custom-light: #ff7f6f;
$custom-dark: #000000;

JSON

{
  "hex": "#ff3537",
  "rgb": {
    "r": 255,
    "g": 53,
    "b": 55
  },
  "hsl": {
    "h": 359.406,
    "s": 100,
    "l": 60.392
  },
  "oklch": {
    "l": 0.65058,
    "c": 0.23531,
    "h": 26.4
  },
  "luminance": 0.24082
}

Semantic roles & 50–950 ramp

primary

#FF3537

secondary

#A1EEEE

accent

#E6E300

background

#FFF8F6

surface

#FFF0EC

border

#D7CBC7

text

#1B0B07

muted

#887C7A

Preview Lab

Preview with #FF3537

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

Preview Lab → · Contrast checker → · Palette generator →