#66CC4B#66CC4B

#66CC4B is a light, vivid green. Relative luminance 0.465; OKLCH L 75.7% C 0.192 H 139.6°. Best body text is #000000 at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#66CC4B
RGB	rgb(102, 204, 75)
HSL	hsl(107, 56%, 55%)
HSV	hsv(107, 63%, 80%)
CMYK	cmyk(50%, 0%, 63.2%, 20%)
CIE-LAB	lab(73.88, -53.37, 53.68)
CIE-LCH	lch(73.88, 75.70, 134.83°)
OKLab	oklab(75.69% -0.1465 0.1245)
OKLCH	oklch(75.69% 0.192 139.6)
XYZ	xyz(28.3412, 46.5164, 14.1404)
Luminance	0.4652 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CC4B #B14BCC

analogous

#A6CC4B #66CC4B #4BCC71

triadic

#66CC4B #4B66CC #CC4B66

tetradic

#66CC4B #4BA6CC #B14BCC #CC714B

square

#66CC4B #4BA6CC #B14BCC #CC714B

split-complementary

#66CC4B #714BCC #CC4BA6

monochromatic

#357A23 #4AAA30 #66CC4B #8FDA7B #B7E7AA

Accessibility & contrast

On white

2.04

#66CC4B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.30

#66CC4B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC4B

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CC4B	#FFFFFF	#000000	##000000
##66CC4B	1.00	2.04	10.30	10.30
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.30	21.00	1.00	1.00
##000000	10.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D2BB3B

Deuteranopia (green-blind)

#C4B256

Tritanopia (blue-blind)

#5CC6B1

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66cc4b;
/* rgb */ color: rgb(102, 204, 75);
/* oklch */ color: oklch(75.7% 0.192 139.6);

Tailwind

colors: {
  custom: {
    50: '#9adc82',
    500: '#66cc4b',
    950: '#000000',
  },
}

SCSS

$custom: #66cc4b;
$custom-light: #9adc82;
$custom-dark: #000000;

JSON

{
  "hex": "#66cc4b",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 75
  },
  "hsl": {
    "h": 107.442,
    "s": 55.844,
    "l": 54.706
  },
  "oklch": {
    "l": 0.75694,
    "c": 0.19225,
    "h": 139.6
  },
  "luminance": 0.46519
}

Semantic roles & 50–950 ramp

primary

#66CC4B

secondary

#C99ED5

accent

#49DFC0

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CC4B

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

Preview Lab → · Contrast checker → · Palette generator →