#FF042A#FF042A

#FF042A is a light, highly saturated red. Relative luminance 0.215; OKLCH L 63.1% C 0.255 H 25.3°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#FF042A
RGB	rgb(255, 4, 42)
HSL	hsl(351, 100%, 51%)
HSV	hsv(351, 98%, 100%)
CMYK	cmyk(0%, 98.4%, 83.5%, 0%)
CIE-LAB	lab(53.52, 80.31, 52.56)
CIE-LCH	lch(53.52, 95.98, 33.20°)
OKLab	oklab(63.05% 0.2303 0.1091)
OKLCH	oklch(63.05% 0.255 25.3)
XYZ	xyz(41.7068, 21.5212, 4.1481)
Luminance	0.2151 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF042A #04FFD9

analogous

#FF04A8 #FF042A #FF5B04

triadic

#FF042A #2AFF04 #042AFF

tetradic

#FF042A #A8FF04 #04FFD9 #5B04FF

square

#FF042A #A8FF04 #04FFD9 #5B04FF

split-complementary

#FF042A #04FF5B #04A8FF

monochromatic

#890015 #C6001E #FF042A #FF415E #FF7E92

Accessibility & contrast

On white

3.96

#FF042A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#FF042A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF042A

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF042A	#FFFFFF	#000000	##000000
##FF042A	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C6027

Deuteranopia (green-blind)

#A2911B

Tritanopia (blue-blind)

#FF001D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #ff042a;
/* rgb */ color: rgb(255, 4, 42);
/* oklch */ color: oklch(63.1% 0.255 25.3);

Tailwind

colors: {
  custom: {
    50: '#ff7465',
    500: '#ff042a',
    950: '#000000',
  },
}

SCSS

$custom: #ff042a;
$custom-light: #ff7465;
$custom-dark: #000000;

JSON

{
  "hex": "#ff042a",
  "rgb": {
    "r": 255,
    "g": 4,
    "b": 42
  },
  "hsl": {
    "h": 350.916,
    "s": 100,
    "l": 50.784
  },
  "oklch": {
    "l": 0.63054,
    "c": 0.25479,
    "h": 25.3
  },
  "luminance": 0.21514
}

Semantic roles & 50–950 ramp

primary

#FF042A

secondary

#78E7D6

accent

#FFDF29

background

#FFF7F6

surface

#FFEEEB

border

#D7C9C6

text

#1C0A06

muted

#887C7A

Preview Lab

Preview with #FF042A

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

Preview Lab → · Contrast checker → · Palette generator →