#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
RGBrgb(100, 123, 27)
HSLhsl(74, 64%, 29%)
HSVhsv(74, 78%, 48%)
CMYKcmyk(18.7%, 0%, 78%, 51.8%)
CIE-LABlab(48.20, -22.22, 46.21)
CIE-LCHlch(48.20, 51.28, 115.68°)
OKLaboklab(54.59% -0.0652 0.1022)
OKLCHoklch(54.59% 0.121 122.5)
XYZxyz(12.5365, 16.9543, 3.6488)
Luminance0.1695 (WCAG relative)
Temperaturewarm
Familyyellow-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
##647B1B1.004.784.394.78
#FFFFFF4.781.0021.001.00
#0000004.3921.001.0021.00
##FFFFFF4.781.0021.001.00

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 →

#647B1B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva