#3F8B18#3F8B18

#3F8B18 is a mid, vivid yellow-green. Relative luminance 0.196; OKLCH L 56.6% C 0.163 H 137.8°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F8B18
RGB	rgb(63, 139, 24)
HSL	hsl(100, 71%, 32%)
HSV	hsv(100, 83%, 55%)
CMYK	cmyk(54.7%, 0%, 82.7%, 45.5%)
CIE-LAB	lab(51.37, -43.46, 49.44)
CIE-LCH	lch(51.37, 65.82, 131.32°)
OKLab	oklab(56.64% -0.1204 0.1093)
OKLCH	oklch(56.64% 0.163 137.8)
XYZ	xyz(11.4470, 19.5871, 4.0414)
Luminance	0.1959 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8B18 #64188B

analogous

#798B18 #3F8B18 #188B2B

triadic

#3F8B18 #183F8B #8B183F

tetradic

#3F8B18 #18798B #64188B #8B2B18

square

#3F8B18 #18798B #64188B #8B2B18

split-complementary

#3F8B18 #2B188B #8B1879

monochromatic

#102306 #27570F #3F8B18 #57BF21 #75DE3F

Accessibility & contrast

On white

4.27

#3F8B18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#3F8B18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8B18

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8B18	#FFFFFF	#000000	##000000
##3F8B18	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#907E00

Deuteranopia (green-blind)

#867826

Tritanopia (blue-blind)

#398676

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f8b18;
/* rgb */ color: rgb(63, 139, 24);
/* oklch */ color: oklch(56.6% 0.163 137.8);

Tailwind

colors: {
  custom: {
    50: '#7dad60',
    500: '#3f8b18',
    950: '#000000',
  },
}

SCSS

$custom: #3f8b18;
$custom-light: #7dad60;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8b18",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 24
  },
  "hsl": {
    "h": 99.652,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.56638,
    "c": 0.16263,
    "h": 137.8
  },
  "luminance": 0.19588
}

Semantic roles & 50–950 ramp

primary

#3F8B18

secondary

#9440BE

accent

#3AEDB1

background

#F8FAF5

surface

#EFF4EA

border

#CACEC6

text

#0A1005

muted

#7C7F79

Preview Lab

Preview with #3F8B18

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

Preview Lab → · Contrast checker → · Palette generator →