#EF102F#EF102F

#EF102F is a mid, highly saturated red. Relative luminance 0.189; OKLCH L 60.4% C 0.239 H 24.2°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#EF102F
RGB	rgb(239, 16, 47)
HSL	hsl(352, 87%, 50%)
HSV	hsv(352, 93%, 94%)
CMYK	cmyk(0%, 93.3%, 80.3%, 6.3%)
CIE-LAB	lab(50.61, 75.66, 46.04)
CIE-LCH	lch(50.61, 88.57, 31.32°)
OKLab	oklab(60.37% 0.2183 0.0983)
OKLCH	oklch(60.37% 0.239 24.2)
XYZ	xyz(36.2997, 18.9327, 4.4319)
Luminance	0.1893 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EF102F #10EFD0

analogous

#EF109F #EF102F #EF6010

triadic

#EF102F #2FEF10 #102FEF

tetradic

#EF102F #9FEF10 #10EFD0 #6010EF

square

#EF102F #9FEF10 #10EFD0 #6010EF

split-complementary

#EF102F #10EF60 #109FEF

monochromatic

#7C0818 #B60C24 #EF102F #F34961 #F78393

Accessibility & contrast

On white

4.39

#EF102F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#EF102F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #EF102F

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EF102F	#FFFFFF	#000000	##000000
##EF102F	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#655B2D

Deuteranopia (green-blind)

#988824

Tritanopia (blue-blind)

#FF0022

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #ef102f;
/* rgb */ color: rgb(239, 16, 47);
/* oklch */ color: oklch(60.4% 0.239 24.2);

Tailwind

colors: {
  custom: {
    50: '#ff7368',
    500: '#ef102f',
    950: '#000000',
  },
}

SCSS

$custom: #ef102f;
$custom-light: #ff7368;
$custom-dark: #000000;

JSON

{
  "hex": "#ef102f",
  "rgb": {
    "r": 239,
    "g": 16,
    "b": 47
  },
  "hsl": {
    "h": 351.659,
    "s": 87.451,
    "l": 50
  },
  "oklch": {
    "l": 0.60369,
    "c": 0.23939,
    "h": 24.2
  },
  "luminance": 0.18927
}

Semantic roles & 50–950 ramp

primary

#EF102F

secondary

#7BDFD1

accent

#FEE02A

background

#FFF7F6

surface

#FFEEEB

border

#D7C9C6

text

#1A0A06

muted

#877C7A

Preview Lab

Preview with #EF102F

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

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