#647B1B#647B1B

#647B1B is a mid, vivid yellow-green. Relative luminance 0.170; OKLCH L 54.6% C 0.121 H 122.5°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#647B1B
RGB	rgb(100, 123, 27)
HSL	hsl(74, 64%, 29%)
HSV	hsv(74, 78%, 48%)
CMYK	cmyk(18.7%, 0%, 78%, 51.8%)
CIE-LAB	lab(48.20, -22.22, 46.21)
CIE-LCH	lch(48.20, 51.28, 115.68°)
OKLab	oklab(54.59% -0.0652 0.1022)
OKLCH	oklch(54.59% 0.121 122.5)
XYZ	xyz(12.5365, 16.9543, 3.6488)
Luminance	0.1695 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647B1B #321B7B

analogous

#7B621B #647B1B #347B1B

triadic

#647B1B #1B647B #7B1B64

tetradic

#647B1B #1B7B62 #321B7B #7B1B34

square

#647B1B #1B7B62 #321B7B #7B1B34

split-complementary

#647B1B #1B347B #621B7B

monochromatic

#141906 #3B4910 #647B1B #8DAD26 #B0D43C

Accessibility & contrast

On white

4.78

#647B1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#647B1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #647B1B

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647B1B	#FFFFFF	#000000	##FFFFFF
##647B1B	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#837305

Deuteranopia (green-blind)

#807224

Tritanopia (blue-blind)

#6A7469

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #647b1b;
/* rgb */ color: rgb(100, 123, 27);
/* oklch */ color: oklch(54.6% 0.121 122.5);

Tailwind

colors: {
  custom: {
    50: '#93a160',
    500: '#647b1b',
    950: '#000000',
  },
}

SCSS

$custom: #647b1b;
$custom-light: #93a160;
$custom-dark: #000000;

JSON

{
  "hex": "#647b1b",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 27
  },
  "hsl": {
    "h": 74.375,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.54591,
    "c": 0.12123,
    "h": 122.5
  },
  "luminance": 0.16954
}

Semantic roles & 50–950 ramp

primary

#647B1B

secondary

#5D43AF

accent

#41E769

background

#F9F9F5

surface

#F2F2EA

border

#CCCCC6

text

#0D0F05

muted

#7E7E79

Preview Lab

Preview with #647B1B

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

Preview Lab → · Contrast checker → · Palette generator →