#647F18#647F18

#647F18 is a mid, vivid yellow-green. Relative luminance 0.180; OKLCH L 55.6% C 0.128 H 123.9°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#647F18
RGB	rgb(100, 127, 24)
HSL	hsl(76, 68%, 30%)
HSV	hsv(76, 81%, 50%)
CMYK	cmyk(21.3%, 0%, 81.1%, 50.2%)
CIE-LAB	lab(49.44, -24.39, 48.38)
CIE-LCH	lch(49.44, 54.18, 116.76°)
OKLab	oklab(55.59% -0.0714 0.1062)
OKLCH	oklch(55.59% 0.128 123.9)
XYZ	xyz(13.0099, 17.9539, 3.6440)
Luminance	0.1795 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647F18 #33187F

analogous

#7F6718 #647F18 #317F18

triadic

#647F18 #18647F #7F1864

tetradic

#647F18 #187F67 #33187F #7F1831

square

#647F18 #187F67 #33187F #7F1831

split-complementary

#647F18 #18317F #67187F

monochromatic

#141A05 #3B4C0E #647F18 #8DB222 #AFD938

Accessibility & contrast

On white

4.57

#647F18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#647F18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647F18

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647F18	#FFFFFF	#000000	##000000
##647F18	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#877600

Deuteranopia (green-blind)

#837523

Tritanopia (blue-blind)

#69786C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #647f18;
/* rgb */ color: rgb(100, 127, 24);
/* oklch */ color: oklch(55.6% 0.128 123.9);

Tailwind

colors: {
  custom: {
    50: '#93a45f',
    500: '#647f18',
    950: '#000000',
  },
}

SCSS

$custom: #647f18;
$custom-light: #93a45f;
$custom-dark: #000000;

JSON

{
  "hex": "#647f18",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 24
  },
  "hsl": {
    "h": 75.728,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.55586,
    "c": 0.12798,
    "h": 123.9
  },
  "luminance": 0.17954
}

Semantic roles & 50–950 ramp

primary

#647F18

secondary

#5E3FB3

accent

#3DEB6A

background

#F9FAF5

surface

#F2F4EA

border

#CCCEC6

text

#0D0F05

muted

#7E7F79

Preview Lab

Preview with #647F18

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

Preview Lab → · Contrast checker → · Palette generator →