#646A18#646A18

#646A18 is a mid, moderate yellow. Relative luminance 0.131; OKLCH L 50.3% C 0.102 H 113.7°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#646A18
RGB	rgb(100, 106, 24)
HSL	hsl(64, 63%, 25%)
HSV	hsv(64, 77%, 42%)
CMYK	cmyk(5.7%, 0%, 77.4%, 58.4%)
CIE-LAB	lab(42.89, -13.35, 42.27)
CIE-LCH	lch(42.89, 44.33, 107.53°)
OKLab	oklab(50.31% -0.041 0.0933)
OKLCH	oklch(50.31% 0.102 113.7)
XYZ	xyz(10.5748, 13.0836, 2.8323)
Luminance	0.1308 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646A18 #1E186A

analogous

#6A4718 #646A18 #3B6A18

triadic

#646A18 #18646A #6A1864

tetradic

#646A18 #186A47 #1E186A #6A183B

square

#646A18 #186A47 #1E186A #6A183B

split-complementary

#646A18 #183B6A #47186A

monochromatic

#181906 #35380D #646A18 #939C23 #C2CE2F

Accessibility & contrast

On white

5.81

#646A18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#646A18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646A18

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646A18	#FFFFFF	#000000	##FFFFFF
##646A18	1.00	5.81	3.62	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726507

Deuteranopia (green-blind)

#72661F

Tritanopia (blue-blind)

#6B635A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #646a18;
/* rgb */ color: rgb(100, 106, 24);
/* oklch */ color: oklch(50.3% 0.102 113.7);

Tailwind

colors: {
  custom: {
    50: '#93945c',
    500: '#646a18',
    950: '#000000',
  },
}

SCSS

$custom: #646a18;
$custom-light: #93945c;
$custom-dark: #000000;

JSON

{
  "hex": "#646a18",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 24
  },
  "hsl": {
    "h": 64.39,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.50308,
    "c": 0.10194,
    "h": 113.7
  },
  "luminance": 0.13083
}

Semantic roles & 50–950 ramp

primary

#646A18

secondary

#453EA0

accent

#42E64E

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646A18

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

Preview Lab → · Contrast checker → · Palette generator →