#646D33#646D33

#646D33 is a mid, moderate yellow. Relative luminance 0.139; OKLCH L 51.3% C 0.082 H 116.7°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#646D33
RGB	rgb(100, 109, 51)
HSL	hsl(69, 36%, 31%)
HSV	hsv(69, 53%, 43%)
CMYK	cmyk(8.3%, 0%, 53.2%, 57.3%)
CIE-LAB	lab(44.07, -12.90, 30.93)
CIE-LCH	lch(44.07, 33.52, 112.64°)
OKLab	oklab(51.33% -0.0368 0.0732)
OKLCH	oklch(51.33% 0.082 116.7)
XYZ	xyz(11.3219, 13.8857, 5.2151)
Luminance	0.1389 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D33 #3C336D

analogous

#6D5933 #646D33 #476D33

triadic

#646D33 #33646D #6D3364

tetradic

#646D33 #336D59 #3C336D #6D3347

square

#646D33 #336D59 #3C336D #6D3347

split-complementary

#646D33 #33476D #59336D

monochromatic

#181A0C #3E431F #646D33 #8A9747 #AAB664

Accessibility & contrast

On white

5.56

#646D33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#646D33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D33

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D33	#FFFFFF	#000000	##FFFFFF
##646D33	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#74682E

Deuteranopia (green-blind)

#736936

Tritanopia (blue-blind)

#696860

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d33;
/* rgb */ color: rgb(100, 109, 51);
/* oklch */ color: oklch(51.3% 0.082 116.7);

Tailwind

colors: {
  custom: {
    50: '#91966c',
    500: '#646d33',
    950: '#000000',
  },
}

SCSS

$custom: #646d33;
$custom-light: #91966c;
$custom-dark: #000000;

JSON

{
  "hex": "#646d33",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 51
  },
  "hsl": {
    "h": 69.31,
    "s": 36.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.51335,
    "c": 0.08194,
    "h": 116.7
  },
  "luminance": 0.13886
}

Semantic roles & 50–950 ramp

primary

#646D33

secondary

#685E9E

accent

#5CCC6D

background

#F9F9F6

surface

#F1F2EB

border

#CBCCC6

text

#0D0D07

muted

#7E7E7A

Preview Lab

Preview with #646D33

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

Preview Lab → · Contrast checker → · Palette generator →