#A6403A#A6403A

#A6403A is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.0% C 0.136 H 26.4°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#A6403A
RGB	rgb(166, 64, 58)
HSL	hsl(3, 48%, 44%)
HSV	hsv(3, 65%, 65%)
CMYK	cmyk(0%, 61.4%, 65.1%, 34.9%)
CIE-LAB	lab(41.35, 41.67, 25.53)
CIE-LCH	lch(41.35, 48.87, 31.50°)
OKLab	oklab(51.03% 0.122 0.0605)
OKLCH	oklch(51.03% 0.136 26.4)
XYZ	xyz(18.3248, 12.0817, 5.3692)
Luminance	0.1208 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6403A #3AA0A6

analogous

#A63A6A #A6403A #A6763A

triadic

#A6403A #3AA640 #403AA6

tetradic

#A6403A #6AA63A #3AA0A6 #763AA6

square

#A6403A #6AA63A #3AA0A6 #763AA6

split-complementary

#A6403A #3AA676 #3A6AA6

monochromatic

#4B1D1A #792F2A #A6403A #C55E58 #D58A86

Accessibility & contrast

On white

6.15

#A6403A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#A6403A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6403A

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6403A	#FFFFFF	#000000	##FFFFFF
##A6403A	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5439

Deuteranopia (green-blind)

#746A37

Tritanopia (blue-blind)

#B62B3F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a6403a;
/* rgb */ color: rgb(166, 64, 58);
/* oklch */ color: oklch(51.0% 0.136 26.4);

Tailwind

colors: {
  custom: {
    50: '#c77970',
    500: '#a6403a',
    950: '#000000',
  },
}

SCSS

$custom: #a6403a;
$custom-light: #c77970;
$custom-dark: #000000;

JSON

{
  "hex": "#a6403a",
  "rgb": {
    "r": 166,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 3.333,
    "s": 48.214,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51032,
    "c": 0.13614,
    "h": 26.4
  },
  "luminance": 0.12079
}

Semantic roles & 50–950 ramp

primary

#A6403A

secondary

#7DBBBF

accent

#D0D850

background

#FDF7F6

surface

#FAEEEC

border

#D3C9C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A6403A

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

Preview Lab → · Contrast checker → · Palette generator →