#646D16#646D16

#646D16 is a mid, moderate yellow. Relative luminance 0.137; OKLCH L 51.0% C 0.107 H 115.5°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#646D16
RGB	rgb(100, 109, 22)
HSL	hsl(66, 66%, 26%)
HSV	hsv(66, 80%, 43%)
CMYK	cmyk(8.3%, 0%, 79.8%, 57.3%)
CIE-LAB	lab(43.81, -15.09, 43.86)
CIE-LCH	lch(43.81, 46.38, 108.99°)
OKLab	oklab(51.04% -0.046 0.0963)
OKLCH	oklch(51.04% 0.107 115.5)
XYZ	xyz(10.8693, 13.7047, 2.8316)
Luminance	0.1371 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D16 #1F166D

analogous

#6D4A16 #646D16 #386D16

triadic

#646D16 #16646D #6D1664

tetradic

#646D16 #166D4A #1F166D #6D1638

square

#646D16 #166D4A #1F166D #6D1638

split-complementary

#646D16 #16386D #4A166D

monochromatic

#171905 #353A0C #646D16 #93A020 #C1D32B

Accessibility & contrast

On white

5.61

#646D16 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#646D16 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D16

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D16	#FFFFFF	#000000	##FFFFFF
##646D16	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756702

Deuteranopia (green-blind)

#75681E

Tritanopia (blue-blind)

#6B665D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646d16;
/* rgb */ color: rgb(100, 109, 22);
/* oklch */ color: oklch(51.0% 0.107 115.5);

Tailwind

colors: {
  custom: {
    50: '#93965b',
    500: '#646d16',
    950: '#000000',
  },
}

SCSS

$custom: #646d16;
$custom-light: #93965b;
$custom-dark: #000000;

JSON

{
  "hex": "#646d16",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 22
  },
  "hsl": {
    "h": 66.207,
    "s": 66.412,
    "l": 25.686
  },
  "oklch": {
    "l": 0.51041,
    "c": 0.10674,
    "h": 115.5
  },
  "luminance": 0.13705
}

Semantic roles & 50–950 ramp

primary

#646D16

secondary

#463CA3

accent

#3EE950

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #646D16

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

Preview Lab → · Contrast checker → · Palette generator →