#644B21#644B21

#644B21 is a dark, moderate orange. Relative luminance 0.079; OKLCH L 43.0% C 0.067 H 78.3°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#644B21
RGB	rgb(100, 75, 33)
HSL	hsl(38, 50%, 26%)
HSV	hsv(38, 67%, 39%)
CMYK	cmyk(0%, 25%, 67%, 60.8%)
CIE-LAB	lab(33.67, 5.44, 28.57)
CIE-LCH	lch(33.67, 29.08, 79.21°)
OKLab	oklab(43.02% 0.0137 0.0659)
OKLCH	oklch(43.02% 0.067 78.3)
XYZ	xyz(8.0466, 7.8518, 2.5303)
Luminance	0.0785 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644B21 #213A64

analogous

#642921 #644B21 #5B6421

triadic

#644B21 #21644B #4B2164

tetradic

#644B21 #216429 #213A64 #64215B

square

#644B21 #216429 #213A64 #64215B

split-complementary

#644B21 #215B64 #292164

monochromatic

#171108 #362812 #644B21 #926E30 #C09040

Accessibility & contrast

On white

8.17

#644B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#644B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644B21

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644B21	#FFFFFF	#000000	##FFFFFF
##644B21	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554C1D

Deuteranopia (green-blind)

#5B5222

Tritanopia (blue-blind)

#6D4442

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #644b21;
/* rgb */ color: rgb(100, 75, 33);
/* oklch */ color: oklch(43.0% 0.067 78.3);

Tailwind

colors: {
  custom: {
    50: '#937d5e',
    500: '#644b21',
    950: '#000000',
  },
}

SCSS

$custom: #644b21;
$custom-light: #937d5e;
$custom-dark: #000000;

JSON

{
  "hex": "#644b21",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 33
  },
  "hsl": {
    "h": 37.612,
    "s": 50.376,
    "l": 26.078
  },
  "oklch": {
    "l": 0.43022,
    "c": 0.06734,
    "h": 78.3
  },
  "luminance": 0.07851
}

Semantic roles & 50–950 ramp

primary

#644B21

secondary

#496698

accent

#82DA4E

background

#F9F7F5

surface

#F2EEE9

border

#CCC9C5

text

#0D0904

muted

#7E7B79

Preview Lab

Preview with #644B21

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

Preview Lab → · Contrast checker → · Palette generator →