#644C43#644C43

#644C43 is a dark, muted orange. Relative luminance 0.083; OKLCH L 43.9% C 0.036 H 41.5°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#644C43
RGB	rgb(100, 76, 67)
HSL	hsl(16, 20%, 33%)
HSV	hsv(16, 33%, 39%)
CMYK	cmyk(0%, 24%, 33%, 60.8%)
CIE-LAB	lab(34.57, 8.69, 9.25)
CIE-LCH	lch(34.57, 12.69, 46.80°)
OKLab	oklab(43.92% 0.0269 0.0238)
OKLCH	oklch(43.92% 0.036 41.5)
XYZ	xyz(8.8533, 8.2839, 6.4417)
Luminance	0.0828 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644C43 #435B64

analogous

#64434A #644C43 #645C43

triadic

#644C43 #43644C #4C4364

tetradic

#644C43 #4A6443 #435B64 #5C4364

square

#644C43 #4A6443 #435B64 #5C4364

split-complementary

#644C43 #43645C #434A64

monochromatic

#1B1412 #3F302A #644C43 #89685C #A6877B

Accessibility & contrast

On white

7.90

#644C43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#644C43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644C43

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644C43	#FFFFFF	#000000	##FFFFFF
##644C43	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524E42

Deuteranopia (green-blind)

#575343

Tritanopia (blue-blind)

#6A484A

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #644c43;
/* rgb */ color: rgb(100, 76, 67);
/* oklch */ color: oklch(43.9% 0.036 41.5);

Tailwind

colors: {
  custom: {
    50: '#917e77',
    500: '#644c43',
    950: '#000000',
  },
}

SCSS

$custom: #644c43;
$custom-light: #917e77;
$custom-dark: #000000;

JSON

{
  "hex": "#644c43",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 67
  },
  "hsl": {
    "h": 16.364,
    "s": 19.76,
    "l": 32.745
  },
  "oklch": {
    "l": 0.4392,
    "c": 0.03587,
    "h": 41.5
  },
  "luminance": 0.08283
}

Semantic roles & 50–950 ramp

primary

#644C43

secondary

#708993

accent

#A6BC6B

background

#F8F7F7

surface

#F0EEED

border

#CBC9C8

text

#0D0908

muted

#7D7B7B

Preview Lab

Preview with #644C43

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

Preview Lab → · Contrast checker → · Palette generator →