#66BC2E#66BC2E

#66BC2E is a light, vivid yellow-green. Relative luminance 0.390; OKLCH L 71.4% C 0.191 H 136.0°. Best body text is #000000 at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#66BC2E
RGB	rgb(102, 188, 46)
HSL	hsl(96, 61%, 46%)
HSV	hsv(96, 76%, 74%)
CMYK	cmyk(45.7%, 0%, 75.5%, 26.3%)
CIE-LAB	lab(68.74, -49.43, 59.48)
CIE-LCH	lch(68.74, 77.34, 129.73°)
OKLab	oklab(71.41% -0.1377 0.133)
OKLCH	oklch(71.41% 0.191 136)
XYZ	xyz(23.9552, 38.9870, 8.8472)
Luminance	0.3899 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC2E #842EBC

analogous

#ADBC2E #66BC2E #2EBC3D

triadic

#66BC2E #2E66BC #BC2E66

tetradic

#66BC2E #2EADBC #842EBC #BC3D2E

square

#66BC2E #2EADBC #842EBC #BC3D2E

split-complementary

#66BC2E #3D2EBC #BC2EAD

monochromatic

#315A16 #4B8B22 #66BC2E #86D552 #A8E184

Accessibility & contrast

On white

2.39

#66BC2E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.80

#66BC2E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC2E

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC2E	#FFFFFF	#000000	##000000
##66BC2E	1.00	2.39	8.80	8.80
#FFFFFF	2.39	1.00	21.00	21.00
#000000	8.80	21.00	1.00	1.00
##000000	8.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3AC0D

Deuteranopia (green-blind)

#B7A53D

Tritanopia (blue-blind)

#62B5A1

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc2e;
/* rgb */ color: rgb(102, 188, 46);
/* oklch */ color: oklch(71.4% 0.191 136.0);

Tailwind

colors: {
  custom: {
    50: '#99d171',
    500: '#66bc2e',
    950: '#000000',
  },
}

SCSS

$custom: #66bc2e;
$custom-light: #99d171;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc2e",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 46
  },
  "hsl": {
    "h": 96.338,
    "s": 60.684,
    "l": 45.882
  },
  "oklch": {
    "l": 0.71405,
    "c": 0.19145,
    "h": 136
  },
  "luminance": 0.38988
}

Semantic roles & 50–950 ramp

primary

#66BC2E

secondary

#AB7CCA

accent

#44E4A5

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1408

muted

#7E827B

Preview Lab

Preview with #66BC2E

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

Preview Lab → · Contrast checker → · Palette generator →