#AA3733#AA3733

#AA3733 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.5% C 0.151 H 26.1°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#AA3733
RGB	rgb(170, 55, 51)
HSL	hsl(2, 54%, 43%)
HSV	hsv(2, 70%, 67%)
CMYK	cmyk(0%, 67.6%, 70%, 33.3%)
CIE-LAB	lab(40.44, 46.70, 28.80)
CIE-LCH	lch(40.44, 54.87, 31.66°)
OKLab	oklab(50.45% 0.1359 0.0666)
OKLCH	oklch(50.45% 0.151 26.1)
XYZ	xyz(18.5433, 11.5201, 4.3785)
Luminance	0.1152 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3733 #33A6AA

analogous

#AA336A #AA3733 #AA7233

triadic

#AA3733 #33AA37 #3733AA

tetradic

#AA3733 #6AAA33 #33A6AA #7233AA

square

#AA3733 #6AAA33 #33A6AA #7233AA

split-complementary

#AA3733 #33AA72 #336AAA

monochromatic

#4C1917 #7B2825 #AA3733 #CA5450 #D9827F

Accessibility & contrast

On white

6.36

#AA3733 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#AA3733 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3733

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3733	#FFFFFF	#000000	##FFFFFF
##AA3733	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)

#575032

Deuteranopia (green-blind)

#73692F

Tritanopia (blue-blind)

#BB1837

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #aa3733;
/* rgb */ color: rgb(170, 55, 51);
/* oklch */ color: oklch(50.5% 0.151 26.1);

Tailwind

colors: {
  custom: {
    50: '#cb746b',
    500: '#aa3733',
    950: '#000000',
  },
}

SCSS

$custom: #aa3733;
$custom-light: #cb746b;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3733",
  "rgb": {
    "r": 170,
    "g": 55,
    "b": 51
  },
  "hsl": {
    "h": 2.017,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50453,
    "c": 0.15134,
    "h": 26.1
  },
  "luminance": 0.11517
}

Semantic roles & 50–950 ramp

primary

#AA3733

secondary

#77BFC2

accent

#D8DD4B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #AA3733

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

Preview Lab → · Contrast checker → · Palette generator →