#A6403F#A6403F

#A6403F is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.1% C 0.135 H 23.7°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#A6403F
RGB	rgb(166, 64, 63)
HSL	hsl(1, 45%, 45%)
HSV	hsv(1, 62%, 65%)
CMYK	cmyk(0%, 61.4%, 62%, 34.9%)
CIE-LAB	lab(41.43, 42.00, 22.61)
CIE-LCH	lch(41.43, 47.70, 28.29°)
OKLab	oklab(51.12% 0.124 0.0544)
OKLCH	oklch(51.12% 0.135 23.7)
XYZ	xyz(18.4582, 12.1351, 6.0720)
Luminance	0.1213 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6403F #3FA5A6

analogous

#A63F71 #A6403F #A6743F

triadic

#A6403F #3FA640 #403FA6

tetradic

#A6403F #71A63F #3FA5A6 #743FA6

square

#A6403F #71A63F #3FA5A6 #743FA6

split-complementary

#A6403F #3FA674 #3F71A6

monochromatic

#4D1E1D #7A2F2E #A6403F #C36160 #D38D8C

Accessibility & contrast

On white

6.13

#A6403F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#A6403F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6403F

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6403F	#FFFFFF	#000000	##FFFFFF
##A6403F	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A543E

Deuteranopia (green-blind)

#736A3C

Tritanopia (blue-blind)

#B62C41

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #a6403f;
/* rgb */ color: rgb(166, 64, 63);
/* oklch */ color: oklch(51.1% 0.135 23.7);

Tailwind

colors: {
  custom: {
    50: '#c67974',
    500: '#a6403f',
    950: '#000000',
  },
}

SCSS

$custom: #a6403f;
$custom-light: #c67974;
$custom-dark: #000000;

JSON

{
  "hex": "#a6403f",
  "rgb": {
    "r": 166,
    "g": 64,
    "b": 63
  },
  "hsl": {
    "h": 0.583,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51123,
    "c": 0.13538,
    "h": 23.7
  },
  "luminance": 0.12133
}

Semantic roles & 50–950 ramp

primary

#A6403F

secondary

#83BEBE

accent

#D3D553

background

#FCF7F7

surface

#F9EEED

border

#D2C9C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A6403F

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

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