#A64537#A64537

#A64537 is a mid, vivid red. Relative luminance 0.126; OKLCH L 51.7% C 0.131 H 30.4°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#A64537
RGB	rgb(166, 69, 55)
HSL	hsl(8, 50%, 43%)
HSV	hsv(8, 67%, 65%)
CMYK	cmyk(0%, 58.4%, 66.9%, 34.9%)
CIE-LAB	lab(42.22, 39.06, 28.39)
CIE-LCH	lch(42.22, 48.29, 36.01°)
OKLab	oklab(51.68% 0.1132 0.0665)
OKLCH	oklch(51.68% 0.131 30.4)
XYZ	xyz(18.5454, 12.6415, 5.0772)
Luminance	0.1264 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A64537 #3798A6

analogous

#A63760 #A64537 #A67C37

triadic

#A64537 #37A645 #4537A6

tetradic

#A64537 #60A637 #3798A6 #7C37A6

square

#A64537 #60A637 #3798A6 #7C37A6

split-complementary

#A64537 #37A67C #3760A6

monochromatic

#4A1F19 #783228 #A64537 #C66254 #D68C82

Accessibility & contrast

On white

5.95

#A64537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#A64537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A64537

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A64537	#FFFFFF	#000000	##FFFFFF
##A64537	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5735

Deuteranopia (green-blind)

#766C35

Tritanopia (blue-blind)

#B63142

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #a64537;
/* rgb */ color: rgb(166, 69, 55);
/* oklch */ color: oklch(51.7% 0.131 30.4);

Tailwind

colors: {
  custom: {
    50: '#c67c6e',
    500: '#a64537',
    950: '#000000',
  },
}

SCSS

$custom: #a64537;
$custom-light: #c67c6e;
$custom-dark: #000000;

JSON

{
  "hex": "#a64537",
  "rgb": {
    "r": 166,
    "g": 69,
    "b": 55
  },
  "hsl": {
    "h": 7.568,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.51675,
    "c": 0.13129,
    "h": 30.4
  },
  "luminance": 0.12639
}

Semantic roles & 50–950 ramp

primary

#A64537

secondary

#7AB6BF

accent

#C8DA4E

background

#FDF7F6

surface

#FAEEEC

border

#D3C9C7

text

#140A07

muted

#837C7A

Preview Lab

Preview with #A64537

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

Preview Lab → · Contrast checker → · Palette generator →