#FF643E#FF643E

#FF643E is a light, vivid red. Relative luminance 0.307; OKLCH L 69.6% C 0.197 H 34.9°. Best body text is #000000 at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#FF643E
RGB	rgb(255, 100, 62)
HSL	hsl(12, 100%, 62%)
HSV	hsv(12, 76%, 100%)
CMYK	cmyk(0%, 60.8%, 75.7%, 0%)
CIE-LAB	lab(62.28, 57.06, 51.09)
CIE-LCH	lch(62.28, 76.59, 41.84°)
OKLab	oklab(69.65% 0.1611 0.1126)
OKLCH	oklch(69.65% 0.197 34.9)
XYZ	xyz(46.6717, 30.7287, 8.0301)
Luminance	0.3072 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF643E #3ED9FF

analogous

#FF3E79 #FF643E #FFC43E

triadic

#FF643E #3EFF64 #643EFF

tetradic

#FF643E #79FF3E #3ED9FF #C43EFF

square

#FF643E #79FF3E #3ED9FF #C43EFF

split-complementary

#FF643E #3EFFC4 #3E79FF

monochromatic

#C32600 #FF3301 #FF643E #FF957B #FFC6B8

Accessibility & contrast

On white

2.94

#FF643E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.14

#FF643E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FF643E

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF643E	#FFFFFF	#000000	##000000
##FF643E	1.00	2.94	7.14	7.14
#FFFFFF	2.94	1.00	21.00	21.00
#000000	7.14	21.00	1.00	1.00
##000000	7.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F8139

Deuteranopia (green-blind)

#B6A339

Tritanopia (blue-blind)

#FF3D5C

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #ff643e;
/* rgb */ color: rgb(255, 100, 62);
/* oklch */ color: oklch(69.6% 0.197 34.9);

Tailwind

colors: {
  custom: {
    50: '#ff9675',
    500: '#ff643e',
    950: '#000000',
  },
}

SCSS

$custom: #ff643e;
$custom-light: #ff9675;
$custom-dark: #000000;

JSON

{
  "hex": "#ff643e",
  "rgb": {
    "r": 255,
    "g": 100,
    "b": 62
  },
  "hsl": {
    "h": 11.813,
    "s": 100,
    "l": 62.157
  },
  "oklch": {
    "l": 0.69646,
    "c": 0.19658,
    "h": 34.9
  },
  "luminance": 0.30722
}

Semantic roles & 50–950 ramp

primary

#FF643E

secondary

#A9E2F0

accent

#B8E600

background

#FFF9F7

surface

#FFF2ED

border

#D7CCC8

text

#1A0E08

muted

#877E7B

Preview Lab

Preview with #FF643E

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

Preview Lab → · Contrast checker → · Palette generator →