#A4381F#A4381F

#A4381F is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.3% C 0.148 H 34.3°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#A4381F
RGB	rgb(164, 56, 31)
HSL	hsl(11, 68%, 38%)
HSV	hsv(11, 81%, 64%)
CMYK	cmyk(0%, 65.9%, 81.1%, 35.7%)
CIE-LAB	lab(39.28, 43.29, 38.53)
CIE-LCH	lch(39.28, 57.96, 41.67°)
OKLab	oklab(49.3% 0.1219 0.0833)
OKLCH	oklch(49.3% 0.148 34.3)
XYZ	xyz(16.9733, 10.8223, 2.4912)
Luminance	0.1082 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A4381F #1F8BA4

analogous

#A41F48 #A4381F #A47A1F

triadic

#A4381F #1FA438 #381FA4

tetradic

#A4381F #48A41F #1F8BA4 #7A1FA4

square

#A4381F #48A41F #1F8BA4 #7A1FA4

split-complementary

#A4381F #1FA47A #1F48A4

monochromatic

#3D150C #712615 #A4381F #D74A2A #E0765D

Accessibility & contrast

On white

6.64

#A4381F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#A4381F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A4381F

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A4381F	#FFFFFF	#000000	##FFFFFF
##A4381F	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574D1B

Deuteranopia (green-blind)

#72651A

Tritanopia (blue-blind)

#B51933

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a4381f;
/* rgb */ color: rgb(164, 56, 31);
/* oklch */ color: oklch(49.3% 0.148 34.3);

Tailwind

colors: {
  custom: {
    50: '#c7745d',
    500: '#a4381f',
    950: '#000000',
  },
}

SCSS

$custom: #a4381f;
$custom-light: #c7745d;
$custom-dark: #000000;

JSON

{
  "hex": "#a4381f",
  "rgb": {
    "r": 164,
    "g": 56,
    "b": 31
  },
  "hsl": {
    "h": 11.278,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.49301,
    "c": 0.1476,
    "h": 34.3
  },
  "luminance": 0.1082
}

Semantic roles & 50–950 ramp

primary

#A4381F

secondary

#5AB1C5

accent

#CAEB3D

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A4381F

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

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