#A6391B#A6391B

#A6391B is a mid, vivid red. Relative luminance 0.111; OKLCH L 49.7% C 0.150 H 35.8°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#A6391B
RGB	rgb(166, 57, 27)
HSL	hsl(13, 72%, 38%)
HSV	hsv(13, 84%, 65%)
CMYK	cmyk(0%, 65.7%, 83.7%, 34.9%)
CIE-LAB	lab(39.77, 43.44, 41.14)
CIE-LCH	lch(39.77, 59.83, 43.44°)
OKLab	oklab(49.73% 0.1214 0.0875)
OKLCH	oklch(49.73% 0.15 35.8)
XYZ	xyz(17.3888, 11.1149, 2.2665)
Luminance	0.1111 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6391B #1B88A6

analogous

#A61B42 #A6391B #A67F1B

triadic

#A6391B #1BA639 #391BA6

tetradic

#A6391B #42A61B #1B88A6 #7F1BA6

square

#A6391B #42A61B #1B88A6 #7F1BA6

split-complementary

#A6391B #1BA67F #1B42A6

monochromatic

#3D150A #712712 #A6391B #DB4B24 #E47658

Accessibility & contrast

On white

6.52

#A6391B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#A6391B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6391B

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6391B	#FFFFFF	#000000	##FFFFFF
##A6391B	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594E16

Deuteranopia (green-blind)

#736716

Tritanopia (blue-blind)

#B71933

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a6391b;
/* rgb */ color: rgb(166, 57, 27);
/* oklch */ color: oklch(49.7% 0.150 35.8);

Tailwind

colors: {
  custom: {
    50: '#c9755a',
    500: '#a6391b',
    950: '#000000',
  },
}

SCSS

$custom: #a6391b;
$custom-light: #c9755a;
$custom-dark: #000000;

JSON

{
  "hex": "#a6391b",
  "rgb": {
    "r": 166,
    "g": 57,
    "b": 27
  },
  "hsl": {
    "h": 12.95,
    "s": 72.021,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4973,
    "c": 0.14965,
    "h": 35.8
  },
  "luminance": 0.11112
}

Semantic roles & 50–950 ramp

primary

#A6391B

secondary

#56AFC7

accent

#C8EF39

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A6391B

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

Preview Lab → · Contrast checker → · Palette generator →