#644B18#644B18

#644B18 is a dark, moderate orange. Relative luminance 0.078; OKLCH L 42.9% C 0.075 H 81.9°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#644B18
RGB	rgb(100, 75, 24)
HSL	hsl(40, 61%, 24%)
HSV	hsv(40, 76%, 39%)
CMYK	cmyk(0%, 25%, 76%, 60.8%)
CIE-LAB	lab(33.58, 4.84, 33.13)
CIE-LCH	lch(33.58, 33.48, 81.69°)
OKLab	oklab(42.92% 0.0106 0.074)
OKLCH	oklch(42.92% 0.075 81.9)
XYZ	xyz(7.9370, 7.8080, 1.9530)
Luminance	0.0781 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644B18 #183164

analogous

#642518 #644B18 #576418

triadic

#644B18 #18644B #4B1864

tetradic

#644B18 #186425 #183164 #641857

square

#644B18 #186425 #183164 #641857

split-complementary

#644B18 #185764 #251864

monochromatic

#191306 #33260C #644B18 #957024 #C79530

Accessibility & contrast

On white

8.20

#644B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#644B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644B18

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644B18	#FFFFFF	#000000	##FFFFFF
##644B18	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554B11

Deuteranopia (green-blind)

#5B521A

Tritanopia (blue-blind)

#6D4340

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #644b18;
/* rgb */ color: rgb(100, 75, 24);
/* oklch */ color: oklch(42.9% 0.075 81.9);

Tailwind

colors: {
  custom: {
    50: '#937d58',
    500: '#644b18',
    950: '#000000',
  },
}

SCSS

$custom: #644b18;
$custom-light: #937d58;
$custom-dark: #000000;

JSON

{
  "hex": "#644b18",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 24
  },
  "hsl": {
    "h": 40.263,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.4292,
    "c": 0.07473,
    "h": 81.9
  },
  "luminance": 0.07807
}

Semantic roles & 50–950 ramp

primary

#644B18

secondary

#3E5C9A

accent

#78E443

background

#F9F7F5

surface

#F2EEE9

border

#CCC9C5

text

#0D0903

muted

#7E7B78

Preview Lab

Preview with #644B18

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

Preview Lab → · Contrast checker → · Palette generator →