#3F9E1B#3F9E1B

#3F9E1B is a mid, vivid green. Relative luminance 0.256; OKLCH L 61.8% C 0.184 H 139.2°. Best body text is #000000 at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F9E1B
RGB	rgb(63, 158, 27)
HSL	hsl(104, 71%, 36%)
HSV	hsv(104, 83%, 62%)
CMYK	cmyk(60.1%, 0%, 82.9%, 38%)
CIE-LAB	lab(57.64, -50.43, 54.35)
CIE-LCH	lch(57.64, 74.14, 132.86°)
OKLab	oklab(61.83% -0.139 0.1201)
OKLCH	oklch(61.83% 0.184 139.2)
XYZ	xyz(14.4740, 25.5883, 5.2130)
Luminance	0.2559 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9E1B #7A1B9E

analogous

#819E1B #3F9E1B #1B9E38

triadic

#3F9E1B #1B3F9E #9E1B3F

tetradic

#3F9E1B #1B819E #7A1B9E #9E381B

square

#3F9E1B #1B819E #7A1B9E #9E381B

split-complementary

#3F9E1B #381B9E #9E1B81

monochromatic

#153509 #2A6A12 #3F9E1B #54D224 #79E152

Accessibility & contrast

On white

3.43

#3F9E1B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.12

#3F9E1B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9E1B

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9E1B	#FFFFFF	#000000	##000000
##3F9E1B	1.00	3.43	6.12	6.12
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.12	21.00	1.00	1.00
##000000	6.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A38F00

Deuteranopia (green-blind)

#97882C

Tritanopia (blue-blind)

#349886

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3f9e1b;
/* rgb */ color: rgb(63, 158, 27);
/* oklch */ color: oklch(61.8% 0.184 139.2);

Tailwind

colors: {
  custom: {
    50: '#80bb64',
    500: '#3f9e1b',
    950: '#000000',
  },
}

SCSS

$custom: #3f9e1b;
$custom-light: #80bb64;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9e1b",
  "rgb": {
    "r": 63,
    "g": 158,
    "b": 27
  },
  "hsl": {
    "h": 103.511,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.61826,
    "c": 0.18364,
    "h": 139.2
  },
  "luminance": 0.2559
}

Semantic roles & 50–950 ramp

primary

#3F9E1B

secondary

#A451C4

accent

#3AEEBC

background

#F8FBF6

surface

#EFF6EB

border

#CAD0C6

text

#0B1206

muted

#7C817A

Preview Lab

Preview with #3F9E1B

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

Preview Lab → · Contrast checker → · Palette generator →