#E33F3A#E33F3A

#E33F3A is a mid, highly saturated red. Relative luminance 0.202; OKLCH L 61.1% C 0.202 H 26.9°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#E33F3A
RGB	rgb(227, 63, 58)
HSL	hsl(2, 75%, 56%)
HSV	hsv(2, 74%, 89%)
CMYK	cmyk(0%, 72.2%, 74.4%, 11%)
CIE-LAB	lab(52.06, 62.36, 40.82)
CIE-LCH	lch(52.06, 74.53, 33.21°)
OKLab	oklab(61.07% 0.1799 0.0911)
OKLCH	oklch(61.07% 0.202 26.9)
XYZ	xyz(34.2237, 20.1967, 6.0985)
Luminance	0.2019 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E33F3A #3ADEE3

analogous

#E33A89 #E33F3A #E3933A

triadic

#E33F3A #3AE33F #3F3AE3

tetradic

#E33F3A #89E33A #3ADEE3 #933AE3

square

#E33F3A #89E33A #3ADEE3 #933AE3

split-complementary

#E33F3A #3AE393 #3A89E3

monochromatic

#8E1814 #C4211C #E33F3A #EB7370 #F2A7A5

Accessibility & contrast

On white

4.17

#E33F3A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#E33F3A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #E33F3A

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E33F3A	#FFFFFF	#000000	##000000
##E33F3A	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#706538

Deuteranopia (green-blind)

#988934

Tritanopia (blue-blind)

#FA0040

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #e33f3a;
/* rgb */ color: rgb(227, 63, 58);
/* oklch */ color: oklch(61.1% 0.202 26.9);

Tailwind

colors: {
  custom: {
    50: '#f57f71',
    500: '#e33f3a',
    950: '#000000',
  },
}

SCSS

$custom: #e33f3a;
$custom-light: #f57f71;
$custom-dark: #000000;

JSON

{
  "hex": "#e33f3a",
  "rgb": {
    "r": 227,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 1.775,
    "s": 75.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.61073,
    "c": 0.20163,
    "h": 26.9
  },
  "luminance": 0.20191
}

Semantic roles & 50–950 ramp

primary

#E33F3A

secondary

#99DDDF

accent

#ECF236

background

#FFF8F6

surface

#FFEFEC

border

#D7CAC7

text

#190B07

muted

#867C7A

Preview Lab

Preview with #E33F3A

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

Preview Lab → · Contrast checker → · Palette generator →