#3F8B17#3F8B17

#3F8B17 is a mid, vivid yellow-green. Relative luminance 0.196; OKLCH L 56.6% C 0.163 H 137.7°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F8B17
RGB	rgb(63, 139, 23)
HSL	hsl(99, 72%, 32%)
HSV	hsv(99, 83%, 55%)
CMYK	cmyk(54.7%, 0%, 83.5%, 45.5%)
CIE-LAB	lab(51.36, -43.51, 49.72)
CIE-LCH	lch(51.36, 66.07, 131.19°)
OKLab	oklab(56.63% -0.1206 0.1098)
OKLCH	oklch(56.63% 0.163 137.7)
XYZ	xyz(11.4368, 19.5830, 3.9877)
Luminance	0.1958 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8B17 #63178B

analogous

#798B17 #3F8B17 #178B29

triadic

#3F8B17 #173F8B #8B173F

tetradic

#3F8B17 #17798B #63178B #8B2917

square

#3F8B17 #17798B #63178B #8B2917

split-complementary

#3F8B17 #29178B #8B1779

monochromatic

#0F2206 #27560E #3F8B17 #57C020 #75DF3D

Accessibility & contrast

On white

4.27

#3F8B17 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#3F8B17 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8B17

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8B17	#FFFFFF	#000000	##000000
##3F8B17	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)

#867825

Tritanopia (blue-blind)

#398676

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f8b17;
/* rgb */ color: rgb(63, 139, 23);
/* oklch */ color: oklch(56.6% 0.163 137.7);

Tailwind

colors: {
  custom: {
    50: '#7dad60',
    500: '#3f8b17',
    950: '#000000',
  },
}

SCSS

$custom: #3f8b17;
$custom-light: #7dad60;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8b17",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 23
  },
  "hsl": {
    "h": 99.31,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.56633,
    "c": 0.16308,
    "h": 137.7
  },
  "luminance": 0.19584
}

Semantic roles & 50–950 ramp

primary

#3F8B17

secondary

#933FBF

accent

#39EEB0

background

#F8FAF5

surface

#EFF4EA

border

#CACEC6

text

#0A1005

muted

#7C7F79

Preview Lab

Preview with #3F8B17

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

Preview Lab → · Contrast checker → · Palette generator →