#A6403D#A6403D

#A6403D is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.1% C 0.136 H 24.8°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#A6403D
RGB	rgb(166, 64, 61)
HSL	hsl(2, 46%, 45%)
HSV	hsv(2, 63%, 65%)
CMYK	cmyk(0%, 61.4%, 63.3%, 34.9%)
CIE-LAB	lab(41.40, 41.87, 23.78)
CIE-LCH	lch(41.40, 48.15, 29.60°)
OKLab	oklab(51.09% 0.1232 0.0569)
OKLCH	oklch(51.09% 0.136 24.8)
XYZ	xyz(18.4033, 12.1131, 5.7829)
Luminance	0.1211 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6403D #3DA3A6

analogous

#A63D6F #A6403D #A6753D

triadic

#A6403D #3DA640 #403DA6

tetradic

#A6403D #6FA63D #3DA3A6 #753DA6

square

#A6403D #6FA63D #3DA3A6 #753DA6

split-complementary

#A6403D #3DA675 #3D6FA6

monochromatic

#4C1D1C #792F2D #A6403D #C3605D #D48C8A

Accessibility & contrast

On white

6.14

#A6403D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#A6403D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6403D

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6403D	#FFFFFF	#000000	##FFFFFF
##A6403D	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A543C

Deuteranopia (green-blind)

#746A3A

Tritanopia (blue-blind)

#B62C40

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #a6403d;
/* rgb */ color: rgb(166, 64, 61);
/* oklch */ color: oklch(51.1% 0.136 24.8);

Tailwind

colors: {
  custom: {
    50: '#c67972',
    500: '#a6403d',
    950: '#000000',
  },
}

SCSS

$custom: #a6403d;
$custom-light: #c67972;
$custom-dark: #000000;

JSON

{
  "hex": "#a6403d",
  "rgb": {
    "r": 166,
    "g": 64,
    "b": 61
  },
  "hsl": {
    "h": 1.714,
    "s": 46.256,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51085,
    "c": 0.13566,
    "h": 24.8
  },
  "luminance": 0.12111
}

Semantic roles & 50–950 ramp

primary

#A6403D

secondary

#80BDBE

accent

#D2D652

background

#FCF7F6

surface

#F9EEEC

border

#D2C9C7

text

#140908

muted

#827B7B

Preview Lab

Preview with #A6403D

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

Preview Lab → · Contrast checker → · Palette generator →