#646C20#646C20

#646C20 is a mid, moderate yellow. Relative luminance 0.135; OKLCH L 50.9% C 0.099 H 115.1°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#646C20
RGB	rgb(100, 108, 32)
HSL	hsl(66, 54%, 27%)
HSV	hsv(66, 70%, 42%)
CMYK	cmyk(7.4%, 0%, 70.4%, 57.6%)
CIE-LAB	lab(43.56, -13.98, 39.68)
CIE-LCH	lch(43.56, 42.07, 109.40°)
OKLab	oklab(50.87% -0.0419 0.0893)
OKLCH	oklch(50.87% 0.099 115.1)
XYZ	xyz(10.8791, 13.5389, 3.4064)
Luminance	0.1354 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C20 #28206C

analogous

#6C4E20 #646C20 #3E6C20

triadic

#646C20 #20646C #6C2064

tetradic

#646C20 #206C4E #28206C #6C203E

square

#646C20 #206C4E #28206C #6C203E

split-complementary

#646C20 #203E6C #4E206C

monochromatic

#161807 #383D12 #646C20 #909B2E #B8C640

Accessibility & contrast

On white

5.66

#646C20 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#646C20 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C20

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C20	#FFFFFF	#000000	##FFFFFF
##646C20	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746615

Deuteranopia (green-blind)

#736825

Tritanopia (blue-blind)

#6B665D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #646c20;
/* rgb */ color: rgb(100, 108, 32);
/* oklch */ color: oklch(50.9% 0.099 115.1);

Tailwind

colors: {
  custom: {
    50: '#929660',
    500: '#646c20',
    950: '#000000',
  },
}

SCSS

$custom: #646c20;
$custom-light: #929660;
$custom-dark: #000000;

JSON

{
  "hex": "#646c20",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 32
  },
  "hsl": {
    "h": 66.316,
    "s": 54.286,
    "l": 27.451
  },
  "oklch": {
    "l": 0.50868,
    "c": 0.09868,
    "h": 115.1
  },
  "luminance": 0.13539
}

Semantic roles & 50–950 ramp

primary

#646C20

secondary

#5148A0

accent

#4ADE5A

background

#F9F9F5

surface

#F1F1EA

border

#CBCBC6

text

#0D0D05

muted

#7E7E79

Preview Lab

Preview with #646C20

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

Preview Lab → · Contrast checker → · Palette generator →