#3FCA18#3FCA18

#3FCA18 is a light, highly saturated green. Relative luminance 0.434; OKLCH L 73.6% C 0.232 H 140.5°. Best body text is #000000 at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#3FCA18
RGB	rgb(63, 202, 24)
HSL	hsl(107, 79%, 44%)
HSV	hsv(107, 88%, 79%)
CMYK	cmyk(68.8%, 0%, 88.1%, 20.8%)
CIE-LAB	lab(71.80, -65.37, 67.60)
CIE-LCH	lch(71.80, 94.03, 134.04°)
OKLab	oklab(73.56% -0.1791 0.1476)
OKLCH	oklch(73.56% 0.232 140.5)
XYZ	xyz(23.3341, 43.3613, 8.0038)
Luminance	0.4336 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FCA18 #A318CA

analogous

#98CA18 #3FCA18 #18CA4A

triadic

#3FCA18 #183FCA #CA183F

tetradic

#3FCA18 #1898CA #A318CA #CA4A18

square

#3FCA18 #1898CA #A318CA #CA4A18

split-complementary

#3FCA18 #4A18CA #CA1898

monochromatic

#1D5D0B #2E9312 #3FCA18 #5EE738 #8AEE6F

Accessibility & contrast

On white

2.17

#3FCA18 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.67

#3FCA18 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FCA18

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FCA18	#FFFFFF	#000000	##000000
##3FCA18	1.00	2.17	9.67	9.67
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.67	21.00	1.00	1.00
##000000	9.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B700

Deuteranopia (green-blind)

#C0AC33

Tritanopia (blue-blind)

#21C3AC

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #3fca18;
/* rgb */ color: rgb(63, 202, 24);
/* oklch */ color: oklch(73.6% 0.232 140.5);

Tailwind

colors: {
  custom: {
    50: '#88db6a',
    500: '#3fca18',
    950: '#000000',
  },
}

SCSS

$custom: #3fca18;
$custom-light: #88db6a;
$custom-dark: #000000;

JSON

{
  "hex": "#3fca18",
  "rgb": {
    "r": 63,
    "g": 202,
    "b": 24
  },
  "hsl": {
    "h": 106.854,
    "s": 78.761,
    "l": 44.314
  },
  "oklch": {
    "l": 0.73555,
    "c": 0.23211,
    "h": 140.5
  },
  "luminance": 0.43364
}

Semantic roles & 50–950 ramp

primary

#3FCA18

secondary

#BD6AD4

accent

#33F5CB

background

#F9FDF6

surface

#F1FBEC

border

#CBD4C7

text

#0D1508

muted

#7E837A

Preview Lab

Preview with #3FCA18

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

Preview Lab → · Contrast checker → · Palette generator →