#AA3637#AA3637

#AA3637 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.4% C 0.152 H 23.9°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#AA3637
RGB	rgb(170, 54, 55)
HSL	hsl(359, 52%, 44%)
HSV	hsv(359, 68%, 67%)
CMYK	cmyk(0%, 68.2%, 67.6%, 33.3%)
CIE-LAB	lab(40.35, 47.34, 26.27)
CIE-LCH	lch(40.35, 54.14, 29.03°)
OKLab	oklab(50.4% 0.1388 0.0616)
OKLCH	oklch(50.4% 0.152 23.9)
XYZ	xyz(18.5883, 11.4629, 4.8474)
Luminance	0.1146 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3637 #36AAA9

analogous

#AA3671 #AA3637 #AA6F36

triadic

#AA3637 #37AA36 #3637AA

tetradic

#AA3637 #71AA36 #36AAA9 #6F36AA

square

#AA3637 #71AA36 #36AAA9 #6F36AA

split-complementary

#AA3637 #36AA6F #3671AA

monochromatic

#4D1819 #7C2728 #AA3637 #C95455 #D88384

Accessibility & contrast

On white

6.38

#AA3637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#AA3637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3637

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3637	#FFFFFF	#000000	##FFFFFF
##AA3637	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F36

Deuteranopia (green-blind)

#736834

Tritanopia (blue-blind)

#BB1738

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #aa3637;
/* rgb */ color: rgb(170, 54, 55);
/* oklch */ color: oklch(50.4% 0.152 23.9);

Tailwind

colors: {
  custom: {
    50: '#ca746e',
    500: '#aa3637',
    950: '#000000',
  },
}

SCSS

$custom: #aa3637;
$custom-light: #ca746e;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3637",
  "rgb": {
    "r": 170,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.483,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50402,
    "c": 0.15182,
    "h": 23.9
  },
  "luminance": 0.1146
}

Semantic roles & 50–950 ramp

primary

#AA3637

secondary

#7BC1C0

accent

#DBDA4D

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #AA3637

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

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