#645C36#645C36

#645C36 is a mid, muted yellow. Relative luminance 0.106; OKLCH L 47.3% C 0.056 H 97.8°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#645C36
RGB	rgb(100, 92, 54)
HSL	hsl(50, 30%, 30%)
HSV	hsv(50, 46%, 39%)
CMYK	cmyk(0%, 8%, 46%, 60.8%)
CIE-LAB	lab(38.95, -2.81, 22.99)
CIE-LCH	lch(38.95, 23.16, 96.96°)
OKLab	oklab(47.28% -0.0076 0.0558)
OKLCH	oklch(47.28% 0.056 97.8)
XYZ	xyz(9.7488, 10.6303, 5.0276)
Luminance	0.1063 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C36 #363E64

analogous

#644536 #645C36 #556436

triadic

#645C36 #36645C #5C3664

tetradic

#645C36 #366445 #363E64 #643655

square

#645C36 #366445 #363E64 #643655

split-complementary

#645C36 #365564 #453664

monochromatic

#15130B #3C3721 #645C36 #8C814B #ADA167

Accessibility & contrast

On white

6.72

#645C36 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#645C36 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C36

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C36	#FFFFFF	#000000	##FFFFFF
##645C36	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635A33

Deuteranopia (green-blind)

#655D37

Tritanopia (blue-blind)

#6A5753

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645c36;
/* rgb */ color: rgb(100, 92, 54);
/* oklch */ color: oklch(47.3% 0.056 97.8);

Tailwind

colors: {
  custom: {
    50: '#918a6d',
    500: '#645c36',
    950: '#000000',
  },
}

SCSS

$custom: #645c36;
$custom-light: #918a6d;
$custom-dark: #000000;

JSON

{
  "hex": "#645c36",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 54
  },
  "hsl": {
    "h": 49.565,
    "s": 29.87,
    "l": 30.196
  },
  "oklch": {
    "l": 0.47275,
    "c": 0.05635,
    "h": 97.8
  },
  "luminance": 0.1063
}

Semantic roles & 50–950 ramp

primary

#645C36

secondary

#616A95

accent

#73C662

background

#F9F8F6

surface

#F1F0EB

border

#CBCBC6

text

#0D0B07

muted

#7E7C7A

Preview Lab

Preview with #645C36

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

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