#645C22#645C22

#645C22 is a mid, moderate yellow. Relative luminance 0.105; OKLCH L 47.0% C 0.078 H 101.5°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#645C22
RGB	rgb(100, 92, 34)
HSL	hsl(53, 49%, 26%)
HSV	hsv(53, 66%, 39%)
CMYK	cmyk(0%, 8%, 66%, 60.8%)
CIE-LAB	lab(38.69, -4.74, 33.60)
CIE-LCH	lch(38.69, 33.94, 98.03°)
OKLab	oklab(46.98% -0.0156 0.0768)
OKLCH	oklch(46.98% 0.078 101.5)
XYZ	xyz(9.3718, 10.4795, 3.0422)
Luminance	0.1048 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C22 #222A64

analogous

#643B22 #645C22 #4B6422

triadic

#645C22 #22645C #5C2264

tetradic

#645C22 #22643B #222A64 #64224B

square

#645C22 #22643B #222A64 #64224B

split-complementary

#645C22 #224B64 #3B2264

monochromatic

#171508 #363212 #645C22 #928632 #BFB042

Accessibility & contrast

On white

6.78

#645C22 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#645C22 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C22

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C22	#FFFFFF	#000000	##FFFFFF
##645C22	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#64591B

Deuteranopia (green-blind)

#675D25

Tritanopia (blue-blind)

#6C5650

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #645c22;
/* rgb */ color: rgb(100, 92, 34);
/* oklch */ color: oklch(47.0% 0.078 101.5);

Tailwind

colors: {
  custom: {
    50: '#928960',
    500: '#645c22',
    950: '#000000',
  },
}

SCSS

$custom: #645c22;
$custom-light: #928960;
$custom-dark: #000000;

JSON

{
  "hex": "#645c22",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 34
  },
  "hsl": {
    "h": 52.727,
    "s": 49.254,
    "l": 26.275
  },
  "oklch": {
    "l": 0.46984,
    "c": 0.0784,
    "h": 101.5
  },
  "luminance": 0.10479
}

Semantic roles & 50–950 ramp

primary

#645C22

secondary

#4A5398

accent

#60D94F

background

#F9F8F5

surface

#F1F0E9

border

#CBCBC5

text

#0D0B05

muted

#7E7C79

Preview Lab

Preview with #645C22

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

Preview Lab → · Contrast checker → · Palette generator →