#643B30#643B30

#643B30 is a dark, moderate red. Relative luminance 0.061; OKLCH L 39.9% C 0.061 H 35.8°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#643B30
RGB	rgb(100, 59, 48)
HSL	hsl(13, 35%, 29%)
HSV	hsv(13, 52%, 39%)
CMYK	cmyk(0%, 41%, 52%, 60.8%)
CIE-LAB	lab(29.54, 16.75, 14.47)
CIE-LCH	lch(29.54, 22.14, 40.82°)
OKLab	oklab(39.89% 0.0497 0.0359)
OKLCH	oklch(39.89% 0.061 35.8)
XYZ	xyz(7.3534, 6.0513, 3.5765)
Luminance	0.0605 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B30 #305964

analogous

#64303F #643B30 #645530

triadic

#643B30 #30643B #3B3064

tetradic

#643B30 #3F6430 #305964 #553064

square

#643B30 #3F6430 #305964 #553064

split-complementary

#643B30 #306455 #303F64

monochromatic

#150C0A #3B231C #643B30 #8D5344 #B16F5D

Accessibility & contrast

On white

9.50

#643B30 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#643B30 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B30

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B30	#FFFFFF	#000000	##FFFFFF
##643B30	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#45402F

Deuteranopia (green-blind)

#4F4930

Tritanopia (blue-blind)

#6C3538

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643b30;
/* rgb */ color: rgb(100, 59, 48);
/* oklch */ color: oklch(39.9% 0.061 35.8);

Tailwind

colors: {
  custom: {
    50: '#927168',
    500: '#643b30',
    950: '#000000',
  },
}

SCSS

$custom: #643b30;
$custom-light: #927168;
$custom-dark: #000000;

JSON

{
  "hex": "#643b30",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 12.692,
    "s": 35.135,
    "l": 29.02
  },
  "oklch": {
    "l": 0.39892,
    "c": 0.06132,
    "h": 35.8
  },
  "luminance": 0.06051
}

Semantic roles & 50–950 ramp

primary

#643B30

secondary

#5A8995

accent

#B4CB5D

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643B30

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

Preview Lab → · Contrast checker → · Palette generator →