#A42737#A42737

#A42737 is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.8% C 0.160 H 19.1°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#A42737
RGB	rgb(164, 39, 55)
HSL	hsl(352, 62%, 40%)
HSV	hsv(352, 76%, 64%)
CMYK	cmyk(0%, 76.2%, 66.5%, 35.7%)
CIE-LAB	lab(37.16, 51.08, 22.04)
CIE-LCH	lch(37.16, 55.63, 23.34°)
OKLab	oklab(47.81% 0.1514 0.0523)
OKLCH	oklch(47.81% 0.16 19.1)
XYZ	xyz(16.7268, 9.6219, 4.5901)
Luminance	0.0962 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42737 #27A494

analogous

#A42776 #A42737 #A45627

triadic

#A42737 #37A427 #2737A4

tetradic

#A42737 #76A427 #27A494 #5627A4

square

#A42737 #76A427 #27A494 #5627A4

split-complementary

#A42737 #27A456 #2776A4

monochromatic

#410F16 #731B26 #A42737 #D0384C #DC6A78

Accessibility & contrast

On white

7.18

#A42737 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#A42737 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42737

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42737	#FFFFFF	#000000	##FFFFFF
##A42737	1.00	7.18	2.92	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4737

Deuteranopia (green-blind)

#6A6133

Tritanopia (blue-blind)

#B4002E

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42737;
/* rgb */ color: rgb(164, 39, 55);
/* oklch */ color: oklch(47.8% 0.160 19.1);

Tailwind

colors: {
  custom: {
    50: '#c66c6d',
    500: '#a42737',
    950: '#000000',
  },
}

SCSS

$custom: #a42737;
$custom-light: #c66c6d;
$custom-dark: #000000;

JSON

{
  "hex": "#a42737",
  "rgb": {
    "r": 164,
    "g": 39,
    "b": 55
  },
  "hsl": {
    "h": 352.32,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47813,
    "c": 0.16023,
    "h": 19.1
  },
  "luminance": 0.09619
}

Semantic roles & 50–950 ramp

primary

#A42737

secondary

#65C2B6

accent

#E5D043

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#140707

muted

#837A7A

Preview Lab

Preview with #A42737

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

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