#3F991B#3F991B

#3F991B is a mid, vivid green. Relative luminance 0.239; OKLCH L 60.5% C 0.178 H 138.9°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F991B
RGB	rgb(63, 153, 27)
HSL	hsl(103, 70%, 35%)
HSV	hsv(103, 82%, 60%)
CMYK	cmyk(58.8%, 0%, 82.4%, 40%)
CIE-LAB	lab(56.00, -48.60, 52.84)
CIE-LCH	lch(56.00, 71.79, 132.61°)
OKLab	oklab(60.47% -0.1341 0.1169)
OKLCH	oklch(60.47% 0.178 138.9)
XYZ	xyz(13.6384, 23.9172, 4.9345)
Luminance	0.2392 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F991B #751B99

analogous

#7E991B #3F991B #1B9936

triadic

#3F991B #1B3F99 #991B3F

tetradic

#3F991B #1B7E99 #751B99 #99361B

square

#3F991B #1B7E99 #751B99 #99361B

split-complementary

#3F991B #361B99 #991B7E

monochromatic

#143109 #2A6512 #3F991B #54CD24 #78E04F

Accessibility & contrast

On white

3.63

#3F991B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#3F991B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F991B

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F991B	#FFFFFF	#000000	##000000
##3F991B	1.00	3.63	5.78	5.78
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9E8B00

Deuteranopia (green-blind)

#93832B

Tritanopia (blue-blind)

#359482

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f991b;
/* rgb */ color: rgb(63, 153, 27);
/* oklch */ color: oklch(60.5% 0.178 138.9);

Tailwind

colors: {
  custom: {
    50: '#7fb863',
    500: '#3f991b',
    950: '#000000',
  },
}

SCSS

$custom: #3f991b;
$custom-light: #7fb863;
$custom-dark: #000000;

JSON

{
  "hex": "#3f991b",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 27
  },
  "hsl": {
    "h": 102.857,
    "s": 70,
    "l": 35.294
  },
  "oklch": {
    "l": 0.60471,
    "c": 0.17786,
    "h": 138.9
  },
  "luminance": 0.23918
}

Semantic roles & 50–950 ramp

primary

#3F991B

secondary

#A14EC2

accent

#3BEDBA

background

#F8FBF6

surface

#EFF6EB

border

#CAD0C6

text

#0B1106

muted

#7C807A

Preview Lab

Preview with #3F991B

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

Preview Lab → · Contrast checker → · Palette generator →