#AA3F37#AA3F37

#AA3F37 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.5% C 0.142 H 27.4°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#AA3F37
RGB	rgb(170, 63, 55)
HSL	hsl(4, 51%, 44%)
HSV	hsv(4, 68%, 67%)
CMYK	cmyk(0%, 62.9%, 67.6%, 33.3%)
CIE-LAB	lab(41.81, 43.40, 28.06)
CIE-LCH	lch(41.81, 51.68, 32.88°)
OKLab	oklab(51.5% 0.1263 0.0656)
OKLCH	oklch(51.5% 0.142 27.4)
XYZ	xyz(19.0466, 12.3795, 5.0002)
Luminance	0.1238 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3F37 #37A2AA

analogous

#AA3769 #AA3F37 #AA7937

triadic

#AA3F37 #37AA3F #3F37AA

tetradic

#AA3F37 #69AA37 #37A2AA #7937AA

square

#AA3F37 #69AA37 #37A2AA #7937AA

split-complementary

#AA3F37 #37AA79 #3769AA

monochromatic

#4E1D19 #7C2E28 #AA3F37 #C85E56 #D78A84

Accessibility & contrast

On white

6.04

#AA3F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#AA3F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3F37

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3F37	#FFFFFF	#000000	##FFFFFF
##AA3F37	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5435

Deuteranopia (green-blind)

#766B34

Tritanopia (blue-blind)

#BB273E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #aa3f37;
/* rgb */ color: rgb(170, 63, 55);
/* oklch */ color: oklch(51.5% 0.142 27.4);

Tailwind

colors: {
  custom: {
    50: '#ca796e',
    500: '#aa3f37',
    950: '#000000',
  },
}

SCSS

$custom: #aa3f37;
$custom-light: #ca796e;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3f37",
  "rgb": {
    "r": 170,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 4.174,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.515,
    "c": 0.14233,
    "h": 27.4
  },
  "luminance": 0.12377
}

Semantic roles & 50–950 ramp

primary

#AA3F37

secondary

#7CBCC1

accent

#D1DB4D

background

#FDF7F6

surface

#FAEEEB

border

#D3C9C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #AA3F37

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

Preview Lab → · Contrast checker → · Palette generator →