#EF636A#EF636A

#EF636A is a light, vivid red. Relative luminance 0.283; OKLCH L 67.8% C 0.173 H 20.0°. Best body text is #000000 at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#EF636A
RGB	rgb(239, 99, 106)
HSL	hsl(357, 81%, 66%)
HSV	hsv(357, 59%, 94%)
CMYK	cmyk(0%, 58.6%, 55.6%, 6.3%)
CIE-LAB	lab(60.18, 54.48, 23.96)
CIE-LCH	lch(60.18, 59.52, 23.74°)
OKLab	oklab(67.77% 0.1625 0.0591)
OKLCH	oklch(67.77% 0.173 20)
XYZ	xyz(42.6636, 28.3203, 16.8526)
Luminance	0.2832 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EF636A #63EFE8

analogous

#EF63B0 #EF636A #EFA263

triadic

#EF636A #6AEF63 #636AEF

tetradic

#EF636A #B0EF63 #63EFE8 #A263EF

square

#EF636A #B0EF63 #63EFE8 #A263EF

split-complementary

#EF636A #63EFA2 #63B0EF

monochromatic

#C4141D #E92B35 #EF636A #F59B9F #FAD2D4

Accessibility & contrast

On white

3.15

#EF636A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.66

#EF636A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #EF636A

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EF636A	#FFFFFF	#000000	##000000
##EF636A	1.00	3.15	6.66	6.66
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.66	21.00	1.00	1.00
##000000	6.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#857F69

Deuteranopia (green-blind)

#A89C67

Tritanopia (blue-blind)

#FF4B66

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #ef636a;
/* rgb */ color: rgb(239, 99, 106);
/* oklch */ color: oklch(67.8% 0.173 20.0);

Tailwind

colors: {
  custom: {
    50: '#fa9494',
    500: '#ef636a',
    950: '#000000',
  },
}

SCSS

$custom: #ef636a;
$custom-light: #fa9494;
$custom-dark: #000000;

JSON

{
  "hex": "#ef636a",
  "rgb": {
    "r": 239,
    "g": 99,
    "b": 106
  },
  "hsl": {
    "h": 357,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.67771,
    "c": 0.17292,
    "h": 20
  },
  "luminance": 0.28315
}

Semantic roles & 50–950 ramp

primary

#EF636A

secondary

#C0EEEB

accent

#DED308

background

#FFF9F9

surface

#FFF2F1

border

#D7CCCB

text

#190E0D

muted

#877E7E

Preview Lab

Preview with #EF636A

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

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