#66CC2B#66CC2B

#66CC2B is a light, highly saturated yellow-green. Relative luminance 0.462; OKLCH L 75.4% C 0.212 H 137.0°. Best body text is #000000 at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#66CC2B
RGB	rgb(102, 204, 43)
HSL	hsl(98, 65%, 48%)
HSV	hsv(98, 79%, 80%)
CMYK	cmyk(50%, 0%, 78.9%, 20%)
CIE-LAB	lab(73.66, -55.75, 65.12)
CIE-LCH	lch(73.66, 85.72, 130.57°)
OKLab	oklab(75.45% -0.1549 0.1443)
OKLCH	oklch(75.45% 0.212 137)
XYZ	xyz(27.5076, 46.1830, 9.7497)
Luminance	0.4618 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CC2B #912BCC

analogous

#B6CC2B #66CC2B #2BCC40

triadic

#66CC2B #2B66CC #CC2B66

tetradic

#66CC2B #2BB6CC #912BCC #CC402B

square

#66CC2B #2BB6CC #912BCC #CC402B

split-complementary

#66CC2B #402BCC #CC2BB6

monochromatic

#336716 #4D9920 #66CC2B #89DC58 #ACE78B

Accessibility & contrast

On white

2.05

#66CC2B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.24

#66CC2B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC2B

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CC2B	#FFFFFF	#000000	##000000
##66CC2B	1.00	2.05	10.24	10.24
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.24	21.00	1.00	1.00
##000000	10.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BA00

Deuteranopia (green-blind)

#C6B23E

Tritanopia (blue-blind)

#60C5AE

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66cc2b;
/* rgb */ color: rgb(102, 204, 43);
/* oklch */ color: oklch(75.4% 0.212 137.0);

Tailwind

colors: {
  custom: {
    50: '#9bdc72',
    500: '#66cc2b',
    950: '#000000',
  },
}

SCSS

$custom: #66cc2b;
$custom-light: #9bdc72;
$custom-dark: #000000;

JSON

{
  "hex": "#66cc2b",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 43
  },
  "hsl": {
    "h": 98.012,
    "s": 65.182,
    "l": 48.431
  },
  "oklch": {
    "l": 0.75448,
    "c": 0.21173,
    "h": 137
  },
  "luminance": 0.46185
}

Semantic roles & 50–950 ramp

primary

#66CC2B

secondary

#B482D0

accent

#40E8AA

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CC2B

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

Preview Lab → · Contrast checker → · Palette generator →