#A03721#A03721

#A03721 is a mid, vivid red. Relative luminance 0.103; OKLCH L 48.5% C 0.144 H 33.6°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#A03721
RGB	rgb(160, 55, 33)
HSL	hsl(10, 66%, 38%)
HSV	hsv(10, 79%, 63%)
CMYK	cmyk(0%, 65.6%, 79.4%, 37.3%)
CIE-LAB	lab(38.41, 42.36, 36.36)
CIE-LCH	lch(38.41, 55.83, 40.64°)
OKLab	oklab(48.52% 0.1198 0.0795)
OKLCH	oklch(48.52% 0.144 33.6)
XYZ	xyz(16.1397, 10.3181, 2.5803)
Luminance	0.1032 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A03721 #218AA0

analogous

#A0214A #A03721 #A07721

triadic

#A03721 #21A037 #3721A0

tetradic

#A03721 #4AA021 #218AA0 #7721A0

square

#A03721 #4AA021 #218AA0 #7721A0

split-complementary

#A03721 #21A077 #214AA0

monochromatic

#3B140C #6D2617 #A03721 #D3482B #DE745E

Accessibility & contrast

On white

6.86

#A03721 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#A03721 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A03721

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A03721	#FFFFFF	#000000	##FFFFFF
##A03721	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554C1E

Deuteranopia (green-blind)

#6F631D

Tritanopia (blue-blind)

#B01A33

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a03721;
/* rgb */ color: rgb(160, 55, 33);
/* oklch */ color: oklch(48.5% 0.144 33.6);

Tailwind

colors: {
  custom: {
    50: '#c4735e',
    500: '#a03721',
    950: '#000000',
  },
}

SCSS

$custom: #a03721;
$custom-light: #c4735e;
$custom-dark: #000000;

JSON

{
  "hex": "#a03721",
  "rgb": {
    "r": 160,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 10.394,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.48515,
    "c": 0.14377,
    "h": 33.6
  },
  "luminance": 0.10316
}

Semantic roles & 50–950 ramp

primary

#A03721

secondary

#5BB0C2

accent

#CBE93F

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#140804

muted

#837B79

Preview Lab

Preview with #A03721

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

Preview Lab → · Contrast checker → · Palette generator →