#FF663D#FF663D

#FF663D is a light, vivid red. Relative luminance 0.311; OKLCH L 69.9% C 0.195 H 35.8°. Best body text is #000000 at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#FF663D
RGB	rgb(255, 102, 61)
HSL	hsl(13, 100%, 62%)
HSV	hsv(13, 76%, 100%)
CMYK	cmyk(0%, 60%, 76.1%, 0%)
CIE-LAB	lab(62.60, 56.15, 51.91)
CIE-LCH	lch(62.60, 76.47, 42.75°)
OKLab	oklab(69.88% 0.1582 0.1141)
OKLCH	oklch(69.88% 0.195 35.8)
XYZ	xyz(46.8387, 31.1062, 7.9517)
Luminance	0.3110 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF663D #3DD6FF

analogous

#FF3D75 #FF663D #FFC73D

triadic

#FF663D #3DFF66 #663DFF

tetradic

#FF663D #75FF3D #3DD6FF #C73DFF

square

#FF663D #75FF3D #3DD6FF #C73DFF

split-complementary

#FF663D #3DFFC7 #3D75FF

monochromatic

#C22900 #FF3600 #FF663D #FF967A #FFC7B7

Accessibility & contrast

On white

2.91

#FF663D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.22

#FF663D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #FF663D

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF663D	#FFFFFF	#000000	##000000
##FF663D	1.00	2.91	7.22	7.22
#FFFFFF	2.91	1.00	21.00	21.00
#000000	7.22	21.00	1.00	1.00
##000000	7.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#918237

Deuteranopia (green-blind)

#B7A438

Tritanopia (blue-blind)

#FF415E

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #ff663d;
/* rgb */ color: rgb(255, 102, 61);
/* oklch */ color: oklch(69.9% 0.195 35.8);

Tailwind

colors: {
  custom: {
    50: '#ff9775',
    500: '#ff663d',
    950: '#000000',
  },
}

SCSS

$custom: #ff663d;
$custom-light: #ff9775;
$custom-dark: #000000;

JSON

{
  "hex": "#ff663d",
  "rgb": {
    "r": 255,
    "g": 102,
    "b": 61
  },
  "hsl": {
    "h": 12.68,
    "s": 100,
    "l": 61.961
  },
  "oklch": {
    "l": 0.69885,
    "c": 0.19504,
    "h": 35.8
  },
  "luminance": 0.311
}

Semantic roles & 50–950 ramp

primary

#FF663D

secondary

#A8E1F0

accent

#B5E600

background

#FFF9F7

surface

#FFF2ED

border

#D7CCC8

text

#1A0E08

muted

#877E7B

Preview Lab

Preview with #FF663D

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

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