#645E44#645E44

#645E44 is a mid, muted yellow. Relative luminance 0.111; OKLCH L 48.0% C 0.040 H 96.7°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#645E44
RGB	rgb(100, 94, 68)
HSL	hsl(49, 19%, 33%)
HSV	hsv(49, 32%, 39%)
CMYK	cmyk(0%, 6%, 32%, 60.8%)
CIE-LAB	lab(39.80, -2.13, 15.81)
CIE-LCH	lch(39.80, 15.95, 97.69°)
OKLab	oklab(48.03% -0.0046 0.0397)
OKLCH	oklch(48.03% 0.04 96.7)
XYZ	xyz(10.3017, 11.1323, 7.0738)
Luminance	0.1113 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E44 #444A64

analogous

#644E44 #645E44 #5A6444

triadic

#645E44 #44645E #5E4464

tetradic

#645E44 #44644E #444A64 #64445A

square

#645E44 #44644E #444A64 #64445A

split-complementary

#645E44 #445A64 #4E4464

monochromatic

#1B1A12 #403C2B #645E44 #88805D #A69E7C

Accessibility & contrast

On white

6.51

#645E44 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#645E44 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E44

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E44	#FFFFFF	#000000	##FFFFFF
##645E44	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635D42

Deuteranopia (green-blind)

#655F45

Tritanopia (blue-blind)

#695A57

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #645e44;
/* rgb */ color: rgb(100, 94, 68);
/* oklch */ color: oklch(48.0% 0.040 96.7);

Tailwind

colors: {
  custom: {
    50: '#908b78',
    500: '#645e44',
    950: '#000000',
  },
}

SCSS

$custom: #645e44;
$custom-light: #908b78;
$custom-dark: #000000;

JSON

{
  "hex": "#645e44",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 68
  },
  "hsl": {
    "h": 48.75,
    "s": 19.048,
    "l": 32.941
  },
  "oklch": {
    "l": 0.48032,
    "c": 0.03998,
    "h": 96.7
  },
  "luminance": 0.11132
}

Semantic roles & 50–950 ramp

primary

#645E44

secondary

#717793

accent

#7BBC6C

background

#F8F8F7

surface

#F0F0ED

border

#CBCBC8

text

#0C0C09

muted

#7D7D7B

Preview Lab

Preview with #645E44

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

Preview Lab → · Contrast checker → · Palette generator →