#EF282B#EF282B

#EF282B is a mid, highly saturated red. Relative luminance 0.200; OKLCH L 61.3% C 0.230 H 26.9°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#EF282B
RGB	rgb(239, 40, 43)
HSL	hsl(359, 86%, 55%)
HSV	hsv(359, 83%, 94%)
CMYK	cmyk(0%, 83.3%, 82%, 6.3%)
CIE-LAB	lab(51.89, 71.77, 49.39)
CIE-LCH	lch(51.89, 87.12, 34.53°)
OKLab	oklab(61.31% 0.2052 0.1042)
OKLCH	oklch(61.31% 0.23 26.9)
XYZ	xyz(36.7961, 20.0489, 4.2174)
Luminance	0.2004 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EF282B #28EFEC

analogous

#EF288F #EF282B #EF8828

triadic

#EF282B #2BEF28 #282BEF

tetradic

#EF282B #8FEF28 #28EFEC #8828EF

square

#EF282B #8FEF28 #28EFEC #8828EF

split-complementary

#EF282B #28EF88 #288FEF

monochromatic

#920B0D #CB0F12 #EF282B #F36163 #F79A9B

Accessibility & contrast

On white

4.19

#EF282B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#EF282B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #EF282B

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EF282B	#FFFFFF	#000000	##000000
##EF282B	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C6028

Deuteranopia (green-blind)

#9B8B20

Tritanopia (blue-blind)

#FF002D

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #ef282b;
/* rgb */ color: rgb(239, 40, 43);
/* oklch */ color: oklch(61.3% 0.230 26.9);

Tailwind

colors: {
  custom: {
    50: '#ff7866',
    500: '#ef282b',
    950: '#000000',
  },
}

SCSS

$custom: #ef282b;
$custom-light: #ff7866;
$custom-dark: #000000;

JSON

{
  "hex": "#ef282b",
  "rgb": {
    "r": 239,
    "g": 40,
    "b": 43
  },
  "hsl": {
    "h": 359.095,
    "s": 86.147,
    "l": 54.706
  },
  "oklch": {
    "l": 0.61307,
    "c": 0.23016,
    "h": 26.9
  },
  "luminance": 0.20043
}

Semantic roles & 50–950 ramp

primary

#EF282B

secondary

#8FE3E2

accent

#FCF92B

background

#FFF7F6

surface

#FFEEEB

border

#D7C9C6

text

#1A0A06

muted

#877C7A

Preview Lab

Preview with #EF282B

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

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