#A42537#A42537

#A42537 is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.6% C 0.162 H 18.6°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#A42537
RGB	rgb(164, 37, 55)
HSL	hsl(351, 63%, 39%)
HSV	hsv(351, 77%, 64%)
CMYK	cmyk(0%, 77.4%, 66.5%, 35.7%)
CIE-LAB	lab(36.92, 51.74, 21.74)
CIE-LCH	lch(36.92, 56.12, 22.79°)
OKLab	oklab(47.64% 0.1536 0.0517)
OKLCH	oklch(47.64% 0.162 18.6)
XYZ	xyz(16.6628, 9.4940, 4.5688)
Luminance	0.0949 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42537 #25A492

analogous

#A42577 #A42537 #A45325

triadic

#A42537 #37A425 #2537A4

tetradic

#A42537 #77A425 #25A492 #5325A4

square

#A42537 #77A425 #25A492 #5325A4

split-complementary

#A42537 #25A453 #2577A4

monochromatic

#400E16 #721A26 #A42537 #D1354B #DD6777

Accessibility & contrast

On white

7.25

#A42537 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#A42537 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42537

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42537	#FFFFFF	#000000	##FFFFFF
##A42537	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4637

Deuteranopia (green-blind)

#6A6033

Tritanopia (blue-blind)

#B4002D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42537;
/* rgb */ color: rgb(164, 37, 55);
/* oklch */ color: oklch(47.6% 0.162 18.6);

Tailwind

colors: {
  custom: {
    50: '#c66b6d',
    500: '#a42537',
    950: '#000000',
  },
}

SCSS

$custom: #a42537;
$custom-light: #c66b6d;
$custom-dark: #000000;

JSON

{
  "hex": "#a42537",
  "rgb": {
    "r": 164,
    "g": 37,
    "b": 55
  },
  "hsl": {
    "h": 351.496,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.47638,
    "c": 0.16203,
    "h": 18.6
  },
  "luminance": 0.09491
}

Semantic roles & 50–950 ramp

primary

#A42537

secondary

#62C2B5

accent

#E6CF42

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#140707

muted

#837A7A

Preview Lab

Preview with #A42537

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

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