#66CC2D#66CC2D

#66CC2D is a light, highly saturated yellow-green. Relative luminance 0.462; OKLCH L 75.5% C 0.211 H 137.1°. Best body text is #000000 at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#66CC2D
RGB	rgb(102, 204, 45)
HSL	hsl(98, 64%, 49%)
HSV	hsv(98, 78%, 80%)
CMYK	cmyk(50%, 0%, 77.9%, 20%)
CIE-LAB	lab(73.67, -55.64, 64.53)
CIE-LCH	lch(73.67, 85.21, 130.77°)
OKLab	oklab(75.46% -0.1545 0.1434)
OKLCH	oklch(75.46% 0.211 137.1)
XYZ	xyz(27.5452, 46.1980, 9.9477)
Luminance	0.4620 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CC2D #932DCC

analogous

#B6CC2D #66CC2D #2DCC44

triadic

#66CC2D #2D66CC #CC2D66

tetradic

#66CC2D #2DB6CC #932DCC #CC442D

square

#66CC2D #2DB6CC #932DCC #CC442D

split-complementary

#66CC2D #442DCC #CC2DB6

monochromatic

#346817 #4D9A22 #66CC2D #89DB5B #ADE68D

Accessibility & contrast

On white

2.05

#66CC2D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.24

#66CC2D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC2D

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CC2D	#FFFFFF	#000000	##000000
##66CC2D	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)

#C6B23F

Tritanopia (blue-blind)

#60C5AF

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66cc2d;
/* rgb */ color: rgb(102, 204, 45);
/* oklch */ color: oklch(75.5% 0.211 137.1);

Tailwind

colors: {
  custom: {
    50: '#9bdc73',
    500: '#66cc2d',
    950: '#000000',
  },
}

SCSS

$custom: #66cc2d;
$custom-light: #9bdc73;
$custom-dark: #000000;

JSON

{
  "hex": "#66cc2d",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 45
  },
  "hsl": {
    "h": 98.491,
    "s": 63.855,
    "l": 48.824
  },
  "oklch": {
    "l": 0.75459,
    "c": 0.21079,
    "h": 137.1
  },
  "luminance": 0.462
}

Semantic roles & 50–950 ramp

primary

#66CC2D

secondary

#B585D0

accent

#41E7AB

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CC2D

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

Preview Lab → · Contrast checker → · Palette generator →