#A6311F#A6311F

#A6311F is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.156 H 31.6°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#A6311F
RGB	rgb(166, 49, 31)
HSL	hsl(8, 69%, 39%)
HSV	hsv(8, 81%, 65%)
CMYK	cmyk(0%, 70.5%, 81.3%, 34.9%)
CIE-LAB	lab(38.56, 46.95, 37.95)
CIE-LCH	lch(38.56, 60.37, 38.95°)
OKLab	oklab(48.83% 0.133 0.0818)
OKLCH	oklch(48.83% 0.156 31.6)
XYZ	xyz(17.0735, 10.4051, 2.4054)
Luminance	0.1040 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6311F #1F94A6

analogous

#A61F50 #A6311F #A6741F

triadic

#A6311F #1FA631 #311FA6

tetradic

#A6311F #50A61F #1F94A6 #741FA6

square

#A6311F #50A61F #1F94A6 #741FA6

split-complementary

#A6311F #1FA674 #1F50A6

monochromatic

#3F130C #722215 #A6311F #D7422B #E1705E

Accessibility & contrast

On white

6.82

#A6311F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#A6311F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6311F

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6311F	#FFFFFF	#000000	##FFFFFF
##A6311F	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544A1C

Deuteranopia (green-blind)

#70641A

Tritanopia (blue-blind)

#B7022E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a6311f;
/* rgb */ color: rgb(166, 49, 31);
/* oklch */ color: oklch(48.8% 0.156 31.6);

Tailwind

colors: {
  custom: {
    50: '#c9715c',
    500: '#a6311f',
    950: '#000000',
  },
}

SCSS

$custom: #a6311f;
$custom-light: #c9715c;
$custom-dark: #000000;

JSON

{
  "hex": "#a6311f",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 31
  },
  "hsl": {
    "h": 8,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.4883,
    "c": 0.15616,
    "h": 31.6
  },
  "luminance": 0.10403
}

Semantic roles & 50–950 ramp

primary

#A6311F

secondary

#5BB7C5

accent

#D4EB3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A6311F

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

Preview Lab → · Contrast checker → · Palette generator →