#A4311F#A4311F

#A4311F is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.5% C 0.154 H 31.7°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#A4311F
RGB	rgb(164, 49, 31)
HSL	hsl(8, 68%, 38%)
HSV	hsv(8, 81%, 64%)
CMYK	cmyk(0%, 70.1%, 81.1%, 35.7%)
CIE-LAB	lab(38.18, 46.26, 37.45)
CIE-LCH	lch(38.18, 59.52, 38.99°)
OKLab	oklab(48.48% 0.1311 0.0809)
OKLCH	oklch(48.48% 0.154 31.7)
XYZ	xyz(16.6574, 10.1906, 2.3859)
Luminance	0.1019 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4311F #1F92A4

analogous

#A41F50 #A4311F #A4731F

triadic

#A4311F #1FA431 #311FA4

tetradic

#A4311F #50A41F #1F92A4 #731FA4

square

#A4311F #50A41F #1F92A4 #731FA4

split-complementary

#A4311F #1FA473 #1F50A4

monochromatic

#3D120C #712215 #A4311F #D7412A #E06F5D

Accessibility & contrast

On white

6.91

#A4311F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#A4311F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A4311F

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4311F	#FFFFFF	#000000	##FFFFFF
##A4311F	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534A1C

Deuteranopia (green-blind)

#6F631A

Tritanopia (blue-blind)

#B5052E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a4311f;
/* rgb */ color: rgb(164, 49, 31);
/* oklch */ color: oklch(48.5% 0.154 31.7);

Tailwind

colors: {
  custom: {
    50: '#c8705c',
    500: '#a4311f',
    950: '#000000',
  },
}

SCSS

$custom: #a4311f;
$custom-light: #c8705c;
$custom-dark: #000000;

JSON

{
  "hex": "#a4311f",
  "rgb": {
    "r": 164,
    "g": 49,
    "b": 31
  },
  "hsl": {
    "h": 8.12,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.48477,
    "c": 0.15405,
    "h": 31.7
  },
  "luminance": 0.10188
}

Semantic roles & 50–950 ramp

primary

#A4311F

secondary

#5AB6C5

accent

#D3EB3D

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A4311F

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

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