#645F4E#645F4E

#645F4E is a mid, muted yellow. Relative luminance 0.114; OKLCH L 48.5% C 0.027 H 93.6°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#645F4E
RGB	rgb(100, 95, 78)
HSL	hsl(46, 12%, 35%)
HSV	hsv(46, 22%, 39%)
CMYK	cmyk(0%, 5%, 22%, 60.8%)
CIE-LAB	lab(40.32, -1.15, 10.47)
CIE-LCH	lch(40.32, 10.53, 96.29°)
OKLab	oklab(48.51% -0.0017 0.0268)
OKLCH	oklch(48.51% 0.027 93.6)
XYZ	xyz(10.7229, 11.4440, 8.8503)
Luminance	0.1144 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645F4E #4E5364

analogous

#64544E #645F4E #5E644E

triadic

#645F4E #4E645F #5F4E64

tetradic

#645F4E #4E6454 #4E5364 #644E5E

square

#645F4E #4E6454 #4E5364 #644E5E

split-complementary

#645F4E #4E5E64 #544E64

monochromatic

#1F1E18 #423E33 #645F4E #868069 #A39D89

Accessibility & contrast

On white

6.39

#645F4E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#645F4E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645F4E

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645F4E	#FFFFFF	#000000	##FFFFFF
##645F4E	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635E4D

Deuteranopia (green-blind)

#64604F

Tritanopia (blue-blind)

#685C5A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #645f4e;
/* rgb */ color: rgb(100, 95, 78);
/* oklch */ color: oklch(48.5% 0.027 93.6);

Tailwind

colors: {
  custom: {
    50: '#908c7f',
    500: '#645f4e',
    950: '#000000',
  },
}

SCSS

$custom: #645f4e;
$custom-light: #908c7f;
$custom-dark: #000000;

JSON

{
  "hex": "#645f4e",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 78
  },
  "hsl": {
    "h": 46.364,
    "s": 12.36,
    "l": 34.902
  },
  "oklch": {
    "l": 0.48511,
    "c": 0.02689,
    "h": 93.6
  },
  "luminance": 0.11444
}

Semantic roles & 50–950 ramp

primary

#645F4E

secondary

#7D8191

accent

#82B573

background

#F8F8F7

surface

#F0F0EE

border

#CBCBC9

text

#0C0C0A

muted

#7D7D7C

Preview Lab

Preview with #645F4E

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

Preview Lab → · Contrast checker → · Palette generator →