#3F971B#3F971B

#3F971B is a mid, vivid green. Relative luminance 0.233; OKLCH L 59.9% C 0.176 H 138.8°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F971B
RGB	rgb(63, 151, 27)
HSL	hsl(103, 70%, 35%)
HSV	hsv(103, 82%, 59%)
CMYK	cmyk(58.3%, 0%, 82.1%, 40.8%)
CIE-LAB	lab(55.35, -47.86, 52.23)
CIE-LCH	lch(55.35, 70.84, 132.50°)
OKLab	oklab(59.93% -0.1321 0.1156)
OKLCH	oklch(59.93% 0.176 138.8)
XYZ	xyz(13.3138, 23.2680, 4.8263)
Luminance	0.2327 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F971B #731B97

analogous

#7D971B #3F971B #1B9735

triadic

#3F971B #1B3F97 #971B3F

tetradic

#3F971B #1B7D97 #731B97 #97351B

square

#3F971B #1B7D97 #731B97 #97351B

split-complementary

#3F971B #351B97 #971B7D

monochromatic

#142F08 #296312 #3F971B #55CB24 #78DF4D

Accessibility & contrast

On white

3.71

#3F971B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#3F971B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F971B

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F971B	#FFFFFF	#000000	##000000
##3F971B	1.00	3.71	5.65	5.65
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9C8900

Deuteranopia (green-blind)

#91822A

Tritanopia (blue-blind)

#369280

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f971b;
/* rgb */ color: rgb(63, 151, 27);
/* oklch */ color: oklch(59.9% 0.176 138.8);

Tailwind

colors: {
  custom: {
    50: '#7fb663',
    500: '#3f971b',
    950: '#000000',
  },
}

SCSS

$custom: #3f971b;
$custom-light: #7fb663;
$custom-dark: #000000;

JSON

{
  "hex": "#3f971b",
  "rgb": {
    "r": 63,
    "g": 151,
    "b": 27
  },
  "hsl": {
    "h": 102.581,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.59928,
    "c": 0.17552,
    "h": 138.8
  },
  "luminance": 0.23269
}

Semantic roles & 50–950 ramp

primary

#3F971B

secondary

#9F4CC1

accent

#3BECB9

background

#F8FBF6

surface

#EFF6EB

border

#CAD0C6

text

#0B1106

muted

#7C807A

Preview Lab

Preview with #3F971B

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

Preview Lab → · Contrast checker → · Palette generator →