#3FB41B#3FB41B

#3FB41B is a light, highly saturated green. Relative luminance 0.338; OKLCH L 67.7% C 0.208 H 140.0°. Best body text is #000000 at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#3FB41B
RGB	rgb(63, 180, 27)
HSL	hsl(106, 74%, 41%)
HSV	hsv(106, 85%, 71%)
CMYK	cmyk(65%, 0%, 85%, 29.4%)
CIE-LAB	lab(64.78, -58.09, 60.81)
CIE-LCH	lch(64.78, 84.10, 133.69°)
OKLab	oklab(67.74% -0.1595 0.1336)
OKLCH	oklch(67.74% 0.208 140)
XYZ	xyz(18.5681, 33.7766, 6.5777)
Luminance	0.3378 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FB41B #901BB4

analogous

#8CB41B #3FB41B #1BB443

triadic

#3FB41B #1B3FB4 #B41B3F

tetradic

#3FB41B #1B8CB4 #901BB4 #B4431B

square

#3FB41B #1B8CB4 #901BB4 #B4431B

split-complementary

#3FB41B #431BB4 #B41B8C

monochromatic

#1A4A0B #2C7F13 #3FB41B #57DF2D #81E762

Accessibility & contrast

On white

2.71

#3FB41B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.76

#3FB41B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB41B

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FB41B	#FFFFFF	#000000	##000000
##3FB41B	1.00	2.71	7.76	7.76
#FFFFFF	2.71	1.00	21.00	21.00
#000000	7.76	21.00	1.00	1.00
##000000	7.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AB9A30

Tritanopia (blue-blind)

#2CAE99

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #3fb41b;
/* rgb */ color: rgb(63, 180, 27);
/* oklch */ color: oklch(67.7% 0.208 140.0);

Tailwind

colors: {
  custom: {
    50: '#84cb68',
    500: '#3fb41b',
    950: '#000000',
  },
}

SCSS

$custom: #3fb41b;
$custom-light: #84cb68;
$custom-dark: #000000;

JSON

{
  "hex": "#3fb41b",
  "rgb": {
    "r": 63,
    "g": 180,
    "b": 27
  },
  "hsl": {
    "h": 105.882,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.67738,
    "c": 0.20808,
    "h": 140
  },
  "luminance": 0.33778
}

Semantic roles & 50–950 ramp

primary

#3FB41B

secondary

#B25FCC

accent

#37F1C5

background

#F8FCF6

surface

#F0F9EB

border

#CBD2C6

text

#0C1307

muted

#7D827A

Preview Lab

Preview with #3FB41B

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

Preview Lab → · Contrast checker → · Palette generator →