#FF423F#FF423F

#FF423F is a light, highly saturated red. Relative luminance 0.255; OKLCH L 66.1% C 0.225 H 26.6°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#FF423F
RGB	rgb(255, 66, 63)
HSL	hsl(1, 100%, 62%)
HSV	hsv(1, 75%, 100%)
CMYK	cmyk(0%, 74.1%, 75.3%, 0%)
CIE-LAB	lab(57.58, 69.90, 45.59)
CIE-LCH	lch(57.58, 83.45, 33.11°)
OKLab	oklab(66.13% 0.2014 0.1009)
OKLCH	oklch(66.13% 0.225 26.6)
XYZ	xyz(44.0906, 25.5222, 7.3064)
Luminance	0.2551 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF423F #3FFCFF

analogous

#FF3F9C #FF423F #FFA23F

triadic

#FF423F #3FFF42 #423FFF

tetradic

#FF423F #9CFF3F #3FFCFF #A23FFF

square

#FF423F #9CFF3F #3FFCFF #A23FFF

split-complementary

#FF423F #3FFFA2 #3F9CFF

monochromatic

#C40300 #FF0602 #FF423F #FF7E7C #FFBAB9

Accessibility & contrast

On white

3.44

#FF423F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.10

#FF423F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF423F

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF423F	#FFFFFF	#000000	##000000
##FF423F	1.00	3.44	6.10	6.10
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.10	21.00	1.00	1.00
##000000	6.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B703C

Deuteranopia (green-blind)

#AA9937

Tritanopia (blue-blind)

#FF0044

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #ff423f;
/* rgb */ color: rgb(255, 66, 63);
/* oklch */ color: oklch(66.1% 0.225 26.6);

Tailwind

colors: {
  custom: {
    50: '#ff8475',
    500: '#ff423f',
    950: '#000000',
  },
}

SCSS

$custom: #ff423f;
$custom-light: #ff8475;
$custom-dark: #000000;

JSON

{
  "hex": "#ff423f",
  "rgb": {
    "r": 255,
    "g": 66,
    "b": 63
  },
  "hsl": {
    "h": 0.938,
    "s": 100,
    "l": 62.353
  },
  "oklch": {
    "l": 0.66128,
    "c": 0.22529,
    "h": 26.6
  },
  "luminance": 0.25515
}

Semantic roles & 50–950 ramp

primary

#FF423F

secondary

#AAEFF0

accent

#E2E600

background

#FFF8F7

surface

#FFF0ED

border

#D7CBC8

text

#1B0C08

muted

#887D7B

Preview Lab

Preview with #FF423F

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

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