#AA3728#AA3728

#AA3728 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.3% C 0.153 H 30.5°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#AA3728
RGB	rgb(170, 55, 40)
HSL	hsl(7, 62%, 41%)
HSV	hsv(7, 76%, 67%)
CMYK	cmyk(0%, 67.6%, 76.5%, 33.3%)
CIE-LAB	lab(40.30, 46.19, 35.04)
CIE-LCH	lch(40.30, 57.97, 37.19°)
OKLab	oklab(50.3% 0.132 0.0779)
OKLCH	oklch(50.3% 0.153 30.5)
XYZ	xyz(18.3288, 11.4343, 3.2490)
Luminance	0.1143 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3728 #289BAA

analogous

#AA285A #AA3728 #AA7828

triadic

#AA3728 #28AA37 #3728AA

tetradic

#AA3728 #5AAA28 #289BAA #7828AA

square

#AA3728 #5AAA28 #289BAA #7828AA

split-complementary

#AA3728 #28AA78 #285AAA

monochromatic

#471711 #78271C #AA3728 #D24F3E #DD7C6F

Accessibility & contrast

On white

6.39

#AA3728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#AA3728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3728

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3728	#FFFFFF	#000000	##FFFFFF
##AA3728	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F25

Deuteranopia (green-blind)

#746824

Tritanopia (blue-blind)

#BB1434

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #aa3728;
/* rgb */ color: rgb(170, 55, 40);
/* oklch */ color: oklch(50.3% 0.153 30.5);

Tailwind

colors: {
  custom: {
    50: '#cb7463',
    500: '#aa3728',
    950: '#000000',
  },
}

SCSS

$custom: #aa3728;
$custom-light: #cb7463;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3728",
  "rgb": {
    "r": 170,
    "g": 55,
    "b": 40
  },
  "hsl": {
    "h": 6.923,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50303,
    "c": 0.15324,
    "h": 30.5
  },
  "luminance": 0.11432
}

Semantic roles & 50–950 ramp

primary

#AA3728

secondary

#6ABAC4

accent

#D2E543

background

#FDF7F5

surface

#FBEDEA

border

#D4C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #AA3728

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

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