#644B1B#644B1B

#644B1B is a dark, moderate orange. Relative luminance 0.078; OKLCH L 43.0% C 0.072 H 80.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#644B1B
RGB	rgb(100, 75, 27)
HSL	hsl(39, 57%, 25%)
HSV	hsv(39, 73%, 39%)
CMYK	cmyk(0%, 25%, 73%, 60.8%)
CIE-LAB	lab(33.61, 5.02, 31.67)
CIE-LCH	lch(33.61, 32.07, 80.99°)
OKLab	oklab(42.95% 0.0116 0.0715)
OKLCH	oklch(42.95% 0.072 80.8)
XYZ	xyz(7.9699, 7.8212, 2.1266)
Luminance	0.0782 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644B1B #1B3464

analogous

#64271B #644B1B #59641B

triadic

#644B1B #1B644B #4B1B64

tetradic

#644B1B #1B6427 #1B3464 #641B59

square

#644B1B #1B6427 #1B3464 #641B59

split-complementary

#644B1B #1B5964 #271B64

monochromatic

#181207 #34270E #644B1B #946F28 #C49335

Accessibility & contrast

On white

8.19

#644B1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#644B1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644B1B

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644B1B	#FFFFFF	#000000	##FFFFFF
##644B1B	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554B15

Deuteranopia (green-blind)

#5B521D

Tritanopia (blue-blind)

#6D4441

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #644b1b;
/* rgb */ color: rgb(100, 75, 27);
/* oklch */ color: oklch(43.0% 0.072 80.8);

Tailwind

colors: {
  custom: {
    50: '#937d5a',
    500: '#644b1b',
    950: '#000000',
  },
}

SCSS

$custom: #644b1b;
$custom-light: #937d5a;
$custom-dark: #000000;

JSON

{
  "hex": "#644b1b",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 27
  },
  "hsl": {
    "h": 39.452,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.42951,
    "c": 0.07243,
    "h": 80.8
  },
  "luminance": 0.07821
}

Semantic roles & 50–950 ramp

primary

#644B1B

secondary

#416099

accent

#7CE147

background

#F9F7F5

surface

#F2EEE9

border

#CCC9C5

text

#0D0904

muted

#7E7B79

Preview Lab

Preview with #644B1B

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

Preview Lab → · Contrast checker → · Palette generator →