#66CB4E#66CB4E

#66CB4E is a light, vivid green. Relative luminance 0.461; OKLCH L 75.5% C 0.189 H 140.0°. Best body text is #000000 at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#66CB4E
RGB	rgb(102, 203, 78)
HSL	hsl(108, 55%, 55%)
HSV	hsv(108, 62%, 80%)
CMYK	cmyk(49.8%, 0%, 61.6%, 20.4%)
CIE-LAB	lab(73.60, -52.69, 52.08)
CIE-LCH	lch(73.60, 74.08, 135.33°)
OKLab	oklab(75.47% -0.1445 0.1214)
OKLCH	oklch(75.47% 0.189 140)
XYZ	xyz(28.2094, 46.0846, 14.6150)
Luminance	0.4609 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CB4E #B34ECB

analogous

#A4CB4E #66CB4E #4ECB74

triadic

#66CB4E #4E66CB #CB4E66

tetradic

#66CB4E #4EA4CB #B34ECB #CB744E

square

#66CB4E #4EA4CB #B34ECB #CB744E

split-complementary

#66CB4E #744ECB #CB4EA4

monochromatic

#357B24 #49AA32 #66CB4E #8FD97D #B8E7AD

Accessibility & contrast

On white

2.06

#66CB4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.22

#66CB4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CB4E

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CB4E	#FFFFFF	#000000	##000000
##66CB4E	1.00	2.06	10.22	10.22
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.22	21.00	1.00	1.00
##000000	10.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0BA40

Deuteranopia (green-blind)

#C3B258

Tritanopia (blue-blind)

#5CC5B0

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66cb4e;
/* rgb */ color: rgb(102, 203, 78);
/* oklch */ color: oklch(75.5% 0.189 140.0);

Tailwind

colors: {
  custom: {
    50: '#9adb84',
    500: '#66cb4e',
    950: '#000000',
  },
}

SCSS

$custom: #66cb4e;
$custom-light: #9adb84;
$custom-dark: #000000;

JSON

{
  "hex": "#66cb4e",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 78
  },
  "hsl": {
    "h": 108.48,
    "s": 54.585,
    "l": 55.098
  },
  "oklch": {
    "l": 0.75473,
    "c": 0.18869,
    "h": 140
  },
  "luminance": 0.46087
}

Semantic roles & 50–950 ramp

primary

#66CB4E

secondary

#CBA0D5

accent

#4ADEC2

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CB4E

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

Preview Lab → · Contrast checker → · Palette generator →