#3F811C#3F811C

#3F811C is a mid, vivid yellow-green. Relative luminance 0.168; OKLCH L 53.9% C 0.148 H 137.2°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F811C
RGB	rgb(63, 129, 28)
HSL	hsl(99, 64%, 31%)
HSV	hsv(99, 78%, 51%)
CMYK	cmyk(51.2%, 0%, 78.3%, 49.4%)
CIE-LAB	lab(48.06, -39.21, 44.99)
CIE-LCH	lch(48.06, 59.68, 131.07°)
OKLab	oklab(53.92% -0.1088 0.1006)
OKLCH	oklch(53.92% 0.148 137.2)
XYZ	xyz(10.1094, 16.8404, 3.8162)
Luminance	0.1684 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F811C #5E1C81

analogous

#71811C #3F811C #1C812B

triadic

#3F811C #1C3F81 #811C3F

tetradic

#3F811C #1C7181 #5E1C81 #812B1C

square

#3F811C #1C7181 #5E1C81 #812B1C

split-complementary

#3F811C #2B1C81 #811C71

monochromatic

#0E1C06 #264F11 #3F811C #58B327 #75D642

Accessibility & contrast

On white

4.81

#3F811C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3F811C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F811C

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F811C	#FFFFFF	#000000	##FFFFFF
##3F811C	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#857505

Deuteranopia (green-blind)

#7D7027

Tritanopia (blue-blind)

#3B7C6E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f811c;
/* rgb */ color: rgb(63, 129, 28);
/* oklch */ color: oklch(53.9% 0.148 137.2);

Tailwind

colors: {
  custom: {
    50: '#7ba660',
    500: '#3f811c',
    950: '#000000',
  },
}

SCSS

$custom: #3f811c;
$custom-light: #7ba660;
$custom-dark: #000000;

JSON

{
  "hex": "#3f811c",
  "rgb": {
    "r": 63,
    "g": 129,
    "b": 28
  },
  "hsl": {
    "h": 99.208,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.53919,
    "c": 0.14818,
    "h": 137.2
  },
  "luminance": 0.16841
}

Semantic roles & 50–950 ramp

primary

#3F811C

secondary

#8E44B4

accent

#40E7AE

background

#F7FAF5

surface

#EEF4EA

border

#C9CEC6

text

#0A0F05

muted

#7C7F79

Preview Lab

Preview with #3F811C

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

Preview Lab → · Contrast checker → · Palette generator →