#E33F3B#E33F3B

#E33F3B is a mid, highly saturated red. Relative luminance 0.202; OKLCH L 61.1% C 0.202 H 26.6°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#E33F3B
RGB	rgb(227, 63, 59)
HSL	hsl(1, 75%, 56%)
HSV	hsv(1, 74%, 89%)
CMYK	cmyk(0%, 72.2%, 74%, 11%)
CIE-LAB	lab(52.07, 62.40, 40.28)
CIE-LCH	lch(52.07, 74.27, 32.84°)
OKLab	oklab(61.09% 0.1802 0.0902)
OKLCH	oklch(61.09% 0.202 26.6)
XYZ	xyz(34.2494, 20.2069, 6.2338)
Luminance	0.2020 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E33F3B #3BDFE3

analogous

#E33B8B #E33F3B #E3933B

triadic

#E33F3B #3BE33F #3F3BE3

tetradic

#E33F3B #8BE33B #3BDFE3 #933BE3

square

#E33F3B #8BE33B #3BDFE3 #933BE3

split-complementary

#E33F3B #3BE393 #3B8BE3

monochromatic

#8F1714 #C5201C #E33F3B #EB7371 #F2A8A6

Accessibility & contrast

On white

4.17

#E33F3B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#E33F3B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #E33F3B

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E33F3B	#FFFFFF	#000000	##000000
##E33F3B	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)

#6F6539

Deuteranopia (green-blind)

#988935

Tritanopia (blue-blind)

#FA0040

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #e33f3b;
/* rgb */ color: rgb(227, 63, 59);
/* oklch */ color: oklch(61.1% 0.202 26.6);

Tailwind

colors: {
  custom: {
    50: '#f57f71',
    500: '#e33f3b',
    950: '#000000',
  },
}

SCSS

$custom: #e33f3b;
$custom-light: #f57f71;
$custom-dark: #000000;

JSON

{
  "hex": "#e33f3b",
  "rgb": {
    "r": 227,
    "g": 63,
    "b": 59
  },
  "hsl": {
    "h": 1.429,
    "s": 75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.61085,
    "c": 0.2015,
    "h": 26.6
  },
  "luminance": 0.20202
}

Semantic roles & 50–950 ramp

primary

#E33F3B

secondary

#9ADEE0

accent

#EDF236

background

#FFF8F6

surface

#FFEFEC

border

#D7CAC7

text

#190B08

muted

#867C7B

Preview Lab

Preview with #E33F3B

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

Preview Lab → · Contrast checker → · Palette generator →