#A6381F#A6381F

#A6381F is a mid, vivid red. Relative luminance 0.110; OKLCH L 49.6% C 0.150 H 34.2°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#A6381F
RGB	rgb(166, 56, 31)
HSL	hsl(11, 69%, 39%)
HSV	hsv(11, 81%, 65%)
CMYK	cmyk(0%, 66.3%, 81.3%, 34.9%)
CIE-LAB	lab(39.64, 44.01, 39.01)
CIE-LCH	lch(39.64, 58.81, 41.55°)
OKLab	oklab(49.64% 0.1239 0.0841)
OKLCH	oklch(49.64% 0.15 34.2)
XYZ	xyz(17.3894, 11.0368, 2.5107)
Luminance	0.1103 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6381F #1F8DA6

analogous

#A61F49 #A6381F #A67B1F

triadic

#A6381F #1FA638 #381FA6

tetradic

#A6381F #49A61F #1F8DA6 #7B1FA6

square

#A6381F #49A61F #1F8DA6 #7B1FA6

split-complementary

#A6381F #1FA67B #1F49A6

monochromatic

#3F150C #722715 #A6381F #D74B2B #E1775E

Accessibility & contrast

On white

6.55

#A6381F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#A6381F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6381F

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6381F	#FFFFFF	#000000	##FFFFFF
##A6381F	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E1B

Deuteranopia (green-blind)

#73661A

Tritanopia (blue-blind)

#B71833

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a6381f;
/* rgb */ color: rgb(166, 56, 31);
/* oklch */ color: oklch(49.6% 0.150 34.2);

Tailwind

colors: {
  custom: {
    50: '#c9745d',
    500: '#a6381f',
    950: '#000000',
  },
}

SCSS

$custom: #a6381f;
$custom-light: #c9745d;
$custom-dark: #000000;

JSON

{
  "hex": "#a6381f",
  "rgb": {
    "r": 166,
    "g": 56,
    "b": 31
  },
  "hsl": {
    "h": 11.111,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.49642,
    "c": 0.14976,
    "h": 34.2
  },
  "luminance": 0.11034
}

Semantic roles & 50–950 ramp

primary

#A6381F

secondary

#5BB2C5

accent

#CBEB3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A6381F

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

Preview Lab → · Contrast checker → · Palette generator →