#AA3738#AA3738

#AA3738 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.5% C 0.151 H 23.8°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#AA3738
RGB	rgb(170, 55, 56)
HSL	hsl(359, 51%, 44%)
HSV	hsv(359, 68%, 67%)
CMYK	cmyk(0%, 67.6%, 67.1%, 33.3%)
CIE-LAB	lab(40.52, 46.98, 25.87)
CIE-LCH	lch(40.52, 53.63, 28.84°)
OKLab	oklab(50.53% 0.1378 0.0609)
OKLCH	oklch(50.53% 0.151 23.8)
XYZ	xyz(18.6595, 11.5666, 4.9906)
Luminance	0.1156 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3738 #37AAA9

analogous

#AA3772 #AA3738 #AA7037

triadic

#AA3738 #38AA37 #3738AA

tetradic

#AA3738 #72AA37 #37AAA9 #7037AA

square

#AA3738 #72AA37 #37AAA9 #7037AA

split-complementary

#AA3738 #37AA70 #3772AA

monochromatic

#4E191A #7C2829 #AA3738 #C85657 #D78485

Accessibility & contrast

On white

6.34

#AA3738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#AA3738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3738

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3738	#FFFFFF	#000000	##FFFFFF
##AA3738	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565037

Deuteranopia (green-blind)

#736935

Tritanopia (blue-blind)

#BB1939

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #aa3738;
/* rgb */ color: rgb(170, 55, 56);
/* oklch */ color: oklch(50.5% 0.151 23.8);

Tailwind

colors: {
  custom: {
    50: '#ca756e',
    500: '#aa3738',
    950: '#000000',
  },
}

SCSS

$custom: #aa3738;
$custom-light: #ca756e;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3738",
  "rgb": {
    "r": 170,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.478,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50534,
    "c": 0.15066,
    "h": 23.8
  },
  "luminance": 0.11564
}

Semantic roles & 50–950 ramp

primary

#AA3738

secondary

#7CC1C0

accent

#DBD94D

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #AA3738

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

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