#643A2E#643A2E

#643A2E is a dark, moderate red. Relative luminance 0.059; OKLCH L 39.6% C 0.063 H 36.7°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#643A2E
RGB	rgb(100, 58, 46)
HSL	hsl(13, 37%, 29%)
HSV	hsv(13, 54%, 39%)
CMYK	cmyk(0%, 42%, 54%, 60.8%)
CIE-LAB	lab(29.24, 17.15, 15.36)
CIE-LCH	lch(29.24, 23.02, 41.84°)
OKLab	oklab(39.65% 0.0507 0.0378)
OKLCH	oklch(39.65% 0.063 36.7)
XYZ	xyz(7.2622, 5.9334, 3.3470)
Luminance	0.0593 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A2E #2E5864

analogous

#642E3D #643A2E #64552E

triadic

#643A2E #2E643A #3A2E64

tetradic

#643A2E #3D642E #2E5864 #552E64

square

#643A2E #3D642E #2E5864 #552E64

split-complementary

#643A2E #2E6455 #2E3D64

monochromatic

#150C0A #3A221B #643A2E #8E5241 #B36D5A

Accessibility & contrast

On white

9.60

#643A2E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#643A2E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A2E

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A2E	#FFFFFF	#000000	##FFFFFF
##643A2E	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#44402D

Deuteranopia (green-blind)

#4E482E

Tritanopia (blue-blind)

#6D3337

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643a2e;
/* rgb */ color: rgb(100, 58, 46);
/* oklch */ color: oklch(39.6% 0.063 36.7);

Tailwind

colors: {
  custom: {
    50: '#937066',
    500: '#643a2e',
    950: '#000000',
  },
}

SCSS

$custom: #643a2e;
$custom-light: #937066;
$custom-dark: #000000;

JSON

{
  "hex": "#643a2e",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 46
  },
  "hsl": {
    "h": 13.333,
    "s": 36.986,
    "l": 28.627
  },
  "oklch": {
    "l": 0.39649,
    "c": 0.06326,
    "h": 36.7
  },
  "luminance": 0.05933
}

Semantic roles & 50–950 ramp

primary

#643A2E

secondary

#588896

accent

#B4CD5B

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643A2E

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

Preview Lab → · Contrast checker → · Palette generator →