#A43721#A43721

#A43721 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.2% C 0.148 H 33.3°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#A43721
RGB	rgb(164, 55, 33)
HSL	hsl(10, 66%, 39%)
HSV	hsv(10, 80%, 64%)
CMYK	cmyk(0%, 66.5%, 79.9%, 35.7%)
CIE-LAB	lab(39.13, 43.80, 37.33)
CIE-LCH	lch(39.13, 57.55, 40.44°)
OKLab	oklab(49.2% 0.1238 0.0813)
OKLCH	oklch(49.2% 0.148 33.3)
XYZ	xyz(16.9525, 10.7372, 2.6184)
Luminance	0.1074 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A43721 #218EA4

analogous

#A4214C #A43721 #A47821

triadic

#A43721 #21A437 #3721A4

tetradic

#A43721 #4CA421 #218EA4 #7821A4

square

#A43721 #4CA421 #218EA4 #7821A4

split-complementary

#A43721 #21A478 #214CA4

monochromatic

#3E150C #712617 #A43721 #D5492D #DF7660

Accessibility & contrast

On white

6.67

#A43721 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#A43721 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A43721

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A43721	#FFFFFF	#000000	##FFFFFF
##A43721	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564D1E

Deuteranopia (green-blind)

#71651D

Tritanopia (blue-blind)

#B51733

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a43721;
/* rgb */ color: rgb(164, 55, 33);
/* oklch */ color: oklch(49.2% 0.148 33.3);

Tailwind

colors: {
  custom: {
    50: '#c7735e',
    500: '#a43721',
    950: '#000000',
  },
}

SCSS

$custom: #a43721;
$custom-light: #c7735e;
$custom-dark: #000000;

JSON

{
  "hex": "#a43721",
  "rgb": {
    "r": 164,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 10.076,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.49198,
    "c": 0.14813,
    "h": 33.3
  },
  "luminance": 0.10735
}

Semantic roles & 50–950 ramp

primary

#A43721

secondary

#5DB3C4

accent

#CDE93E

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A43721

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

Preview Lab → · Contrast checker → · Palette generator →