#AA3731#AA3731

#AA3731 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.4% C 0.152 H 27.0°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#AA3731
RGB	rgb(170, 55, 49)
HSL	hsl(3, 55%, 43%)
HSV	hsv(3, 71%, 67%)
CMYK	cmyk(0%, 67.6%, 71.2%, 33.3%)
CIE-LAB	lab(40.41, 46.60, 29.95)
CIE-LCH	lch(40.41, 55.40, 32.73°)
OKLab	oklab(50.42% 0.1352 0.0688)
OKLCH	oklch(50.42% 0.152 27)
XYZ	xyz(18.5001, 11.5028, 4.1513)
Luminance	0.1150 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3731 #31A4AA

analogous

#AA3168 #AA3731 #AA7331

triadic

#AA3731 #31AA37 #3731AA

tetradic

#AA3731 #68AA31 #31A4AA #7331AA

square

#AA3731 #68AA31 #31A4AA #7331AA

split-complementary

#AA3731 #31AA73 #3168AA

monochromatic

#4B1816 #7A2823 #AA3731 #CC534D #D9817C

Accessibility & contrast

On white

6.36

#AA3731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#AA3731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3731

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3731	#FFFFFF	#000000	##FFFFFF
##AA3731	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F2F

Deuteranopia (green-blind)

#74682D

Tritanopia (blue-blind)

#BB1737

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #aa3731;
/* rgb */ color: rgb(170, 55, 49);
/* oklch */ color: oklch(50.4% 0.152 27.0);

Tailwind

colors: {
  custom: {
    50: '#cb7469',
    500: '#aa3731',
    950: '#000000',
  },
}

SCSS

$custom: #aa3731;
$custom-light: #cb7469;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3731",
  "rgb": {
    "r": 170,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 2.975,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.50423,
    "c": 0.15165,
    "h": 27
  },
  "luminance": 0.115
}

Semantic roles & 50–950 ramp

primary

#AA3731

secondary

#75BEC2

accent

#D7DF49

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #AA3731

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

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