#644C1B#644C1B

#644C1B is a dark, moderate orange. Relative luminance 0.080; OKLCH L 43.2% C 0.073 H 82.3°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#644C1B
RGB	rgb(100, 76, 27)
HSL	hsl(40, 57%, 25%)
HSV	hsv(40, 73%, 39%)
CMYK	cmyk(0%, 24%, 73%, 60.8%)
CIE-LAB	lab(33.90, 4.41, 31.97)
CIE-LCH	lch(33.90, 32.28, 82.15°)
OKLab	oklab(43.18% 0.0098 0.0721)
OKLCH	oklch(43.18% 0.073 82.3)
XYZ	xyz(8.0383, 7.9579, 2.1494)
Luminance	0.0796 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644C1B #1B3364

analogous

#64281B #644C1B #57641B

triadic

#644C1B #1B644C #4C1B64

tetradic

#644C1B #1B6428 #1B3364 #641B57

square

#644C1B #1B6428 #1B3364 #641B57

split-complementary

#644C1B #1B5764 #281B64

monochromatic

#181207 #34270E #644C1B #947128 #C49535

Accessibility & contrast

On white

8.10

#644C1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#644C1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644C1B

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644C1B	#FFFFFF	#000000	##FFFFFF
##644C1B	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C15

Deuteranopia (green-blind)

#5C521D

Tritanopia (blue-blind)

#6D4542

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #644c1b;
/* rgb */ color: rgb(100, 76, 27);
/* oklch */ color: oklch(43.2% 0.073 82.3);

Tailwind

colors: {
  custom: {
    50: '#937d5a',
    500: '#644c1b',
    950: '#000000',
  },
}

SCSS

$custom: #644c1b;
$custom-light: #937d5a;
$custom-dark: #000000;

JSON

{
  "hex": "#644c1b",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 27
  },
  "hsl": {
    "h": 40.274,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.43176,
    "c": 0.0728,
    "h": 82.3
  },
  "luminance": 0.07957
}

Semantic roles & 50–950 ramp

primary

#644C1B

secondary

#415E99

accent

#7AE147

background

#F9F7F5

surface

#F2EEE9

border

#CCC9C5

text

#0D0904

muted

#7E7B79

Preview Lab

Preview with #644C1B

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

Preview Lab → · Contrast checker → · Palette generator →