#A7311F#A7311F

#A7311F is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.0% C 0.157 H 31.6°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#A7311F
RGB	rgb(167, 49, 31)
HSL	hsl(8, 69%, 39%)
HSV	hsv(8, 81%, 65%)
CMYK	cmyk(0%, 70.7%, 81.4%, 34.5%)
CIE-LAB	lab(38.75, 47.29, 38.20)
CIE-LCH	lch(38.75, 60.79, 38.93°)
OKLab	oklab(49.01% 0.134 0.0823)
OKLCH	oklch(49.01% 0.157 31.6)
XYZ	xyz(17.2840, 10.5137, 2.4153)
Luminance	0.1051 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A7311F #1F95A7

analogous

#A71F51 #A7311F #A7751F

triadic

#A7311F #1FA731 #311FA7

tetradic

#A7311F #51A71F #1F95A7 #751FA7

square

#A7311F #51A71F #1F95A7 #751FA7

split-complementary

#A7311F #1FA775 #1F51A7

monochromatic

#40130C #732215 #A7311F #D8422B #E1705F

Accessibility & contrast

On white

6.77

#A7311F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A7311F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A7311F

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A7311F	#FFFFFF	#000000	##FFFFFF
##A7311F	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544B1C

Deuteranopia (green-blind)

#71651A

Tritanopia (blue-blind)

#B8012E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a7311f;
/* rgb */ color: rgb(167, 49, 31);
/* oklch */ color: oklch(49.0% 0.157 31.6);

Tailwind

colors: {
  custom: {
    50: '#ca715c',
    500: '#a7311f',
    950: '#000000',
  },
}

SCSS

$custom: #a7311f;
$custom-light: #ca715c;
$custom-dark: #000000;

JSON

{
  "hex": "#a7311f",
  "rgb": {
    "r": 167,
    "g": 49,
    "b": 31
  },
  "hsl": {
    "h": 7.941,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.49006,
    "c": 0.15721,
    "h": 31.6
  },
  "luminance": 0.10511
}

Semantic roles & 50–950 ramp

primary

#A7311F

secondary

#5CB8C6

accent

#D4EC3C

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A7311F

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

Preview Lab → · Contrast checker → · Palette generator →