#AA3740#AA3740

#AA3740 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.7% C 0.150 H 19.9°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#AA3740
RGB	rgb(170, 55, 64)
HSL	hsl(355, 51%, 44%)
HSV	hsv(355, 68%, 67%)
CMYK	cmyk(0%, 67.6%, 62.4%, 33.3%)
CIE-LAB	lab(40.66, 47.48, 21.14)
CIE-LCH	lch(40.66, 51.97, 24.00°)
OKLab	oklab(50.68% 0.141 0.051)
OKLCH	oklch(50.68% 0.15 19.9)
XYZ	xyz(18.8710, 11.6512, 6.1047)
Luminance	0.1165 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AA3740 #37AAA1

analogous

#AA377A #AA3740 #AA6837

triadic

#AA3740 #40AA37 #3740AA

tetradic

#AA3740 #7AAA37 #37AAA1 #6837AA

square

#AA3740 #7AAA37 #37AAA1 #6837AA

split-complementary

#AA3740 #37AA68 #377AAA

monochromatic

#4E191D #7C282F #AA3740 #C8565F #D7848B

Accessibility & contrast

On white

6.31

#AA3740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#AA3740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AA3740

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AA3740	#FFFFFF	#000000	##FFFFFF
##AA3740	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#555040

Deuteranopia (green-blind)

#72693D

Tritanopia (blue-blind)

#BA1C3B

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #aa3740;
/* rgb */ color: rgb(170, 55, 64);
/* oklch */ color: oklch(50.7% 0.150 19.9);

Tailwind

colors: {
  custom: {
    50: '#ca7574',
    500: '#aa3740',
    950: '#000000',
  },
}

SCSS

$custom: #aa3740;
$custom-light: #ca7574;
$custom-dark: #000000;

JSON

{
  "hex": "#aa3740",
  "rgb": {
    "r": 170,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.304,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50681,
    "c": 0.14995,
    "h": 19.9
  },
  "luminance": 0.11649
}

Semantic roles & 50–950 ramp

primary

#AA3740

secondary

#7CC1BC

accent

#DBD04D

background

#FDF7F7

surface

#FAEDED

border

#D3C8C8

text

#140908

muted

#837B7B

Preview Lab

Preview with #AA3740

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

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