#A03737#A03737

#A03737 is a mid, vivid red. Relative luminance 0.105; OKLCH L 48.8% C 0.140 H 23.9°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#A03737
RGB	rgb(160, 55, 55)
HSL	hsl(0, 49%, 42%)
HSV	hsv(0, 66%, 63%)
CMYK	cmyk(0%, 65.6%, 65.6%, 37.3%)
CIE-LAB	lab(38.70, 43.47, 23.82)
CIE-LCH	lch(38.70, 49.57, 28.73°)
OKLab	oklab(48.83% 0.1278 0.0565)
OKLCH	oklch(48.83% 0.14 23.9)
XYZ	xyz(16.5546, 10.4841, 4.7656)
Luminance	0.1048 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A03737 #37A0A0

analogous

#A0376C #A03737 #A06C37

triadic

#A03737 #37A037 #3737A0

tetradic

#A03737 #6CA037 #37A0A0 #6C37A0

square

#A03737 #6CA037 #37A0A0 #6C37A0

split-complementary

#A03737 #37A06C #376CA0

monochromatic

#451818 #722727 #A03737 #C35151 #D37F7F

Accessibility & contrast

On white

6.78

#A03737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A03737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A03737

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A03737	#FFFFFF	#000000	##FFFFFF
##A03737	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534D36

Deuteranopia (green-blind)

#6D6334

Tritanopia (blue-blind)

#B01F38

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a03737;
/* rgb */ color: rgb(160, 55, 55);
/* oklch */ color: oklch(48.8% 0.140 23.9);

Tailwind

colors: {
  custom: {
    50: '#c3736e',
    500: '#a03737',
    950: '#000000',
  },
}

SCSS

$custom: #a03737;
$custom-light: #c3736e;
$custom-dark: #000000;

JSON

{
  "hex": "#a03737",
  "rgb": {
    "r": 160,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 48.837,
    "l": 42.157
  },
  "oklch": {
    "l": 0.48826,
    "c": 0.13969,
    "h": 23.9
  },
  "luminance": 0.10482
}

Semantic roles & 50–950 ramp

primary

#A03737

secondary

#77BCBC

accent

#D8D84F

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140807

muted

#827B7A

Preview Lab

Preview with #A03737

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

Preview Lab → · Contrast checker → · Palette generator →