#3F821C#3F821C

#3F821C is a mid, vivid yellow-green. Relative luminance 0.171; OKLCH L 54.2% C 0.149 H 137.3°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F821C
RGB	rgb(63, 130, 28)
HSL	hsl(99, 65%, 31%)
HSV	hsv(99, 78%, 51%)
CMYK	cmyk(51.5%, 0%, 78.5%, 49%)
CIE-LAB	lab(48.39, -39.62, 45.32)
CIE-LCH	lch(48.39, 60.20, 131.16°)
OKLab	oklab(54.19% -0.1099 0.1013)
OKLCH	oklch(54.19% 0.149 137.3)
XYZ	xyz(10.2418, 17.1051, 3.8603)
Luminance	0.1711 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F821C #5F1C82

analogous

#72821C #3F821C #1C822C

triadic

#3F821C #1C3F82 #821C3F

tetradic

#3F821C #1C7282 #5F1C82 #822C1C

square

#3F821C #1C7282 #5F1C82 #822C1C

split-complementary

#3F821C #2C1C82 #821C72

monochromatic

#0E1D06 #275011 #3F821C #57B427 #75D642

Accessibility & contrast

On white

4.75

#3F821C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3F821C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F821C

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F821C	#FFFFFF	#000000	##FFFFFF
##3F821C	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#867604

Deuteranopia (green-blind)

#7E7127

Tritanopia (blue-blind)

#3B7D6F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f821c;
/* rgb */ color: rgb(63, 130, 28);
/* oklch */ color: oklch(54.2% 0.149 137.3);

Tailwind

colors: {
  custom: {
    50: '#7ba760',
    500: '#3f821c',
    950: '#000000',
  },
}

SCSS

$custom: #3f821c;
$custom-light: #7ba760;
$custom-dark: #000000;

JSON

{
  "hex": "#3f821c",
  "rgb": {
    "r": 63,
    "g": 130,
    "b": 28
  },
  "hsl": {
    "h": 99.412,
    "s": 64.557,
    "l": 30.98
  },
  "oklch": {
    "l": 0.54194,
    "c": 0.14945,
    "h": 137.3
  },
  "luminance": 0.17106
}

Semantic roles & 50–950 ramp

primary

#3F821C

secondary

#8F44B5

accent

#40E8AE

background

#F7FAF5

surface

#EEF4EA

border

#C9CEC6

text

#0A0F05

muted

#7C7F79

Preview Lab

Preview with #3F821C

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

Preview Lab → · Contrast checker → · Palette generator →