#66BD2A#66BD2A

#66BD2A is a light, vivid yellow-green. Relative luminance 0.394; OKLCH L 71.6% C 0.195 H 135.8°. Best body text is #000000 at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#66BD2A
RGB	rgb(102, 189, 42)
HSL	hsl(96, 64%, 45%)
HSV	hsv(96, 78%, 74%)
CMYK	cmyk(46%, 0%, 77.8%, 25.9%)
CIE-LAB	lab(69.03, -50.06, 61.05)
CIE-LCH	lch(69.03, 78.95, 129.35°)
OKLab	oklab(71.64% -0.1397 0.1357)
OKLCH	oklch(71.64% 0.195 135.8)
XYZ	xyz(24.0944, 39.3856, 8.5226)
Luminance	0.3939 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BD2A #812ABD

analogous

#AFBD2A #66BD2A #2ABD37

triadic

#66BD2A #2A66BD #BD2A66

tetradic

#66BD2A #2AAFBD #812ABD #BD372A

square

#66BD2A #2AAFBD #812ABD #BD372A

split-complementary

#66BD2A #372ABD #BD2AAF

monochromatic

#305914 #4B8B1F #66BD2A #85D74D #A8E37F

Accessibility & contrast

On white

2.37

#66BD2A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.88

#66BD2A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BD2A

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BD2A	#FFFFFF	#000000	##000000
##66BD2A	1.00	2.37	8.88	8.88
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.88	21.00	1.00	1.00
##000000	8.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AD00

Deuteranopia (green-blind)

#B8A63A

Tritanopia (blue-blind)

#63B6A2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bd2a;
/* rgb */ color: rgb(102, 189, 42);
/* oklch */ color: oklch(71.6% 0.195 135.8);

Tailwind

colors: {
  custom: {
    50: '#99d16f',
    500: '#66bd2a',
    950: '#000000',
  },
}

SCSS

$custom: #66bd2a;
$custom-light: #99d16f;
$custom-dark: #000000;

JSON

{
  "hex": "#66bd2a",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 42
  },
  "hsl": {
    "h": 95.51,
    "s": 63.636,
    "l": 45.294
  },
  "oklch": {
    "l": 0.71635,
    "c": 0.19473,
    "h": 135.8
  },
  "luminance": 0.39387
}

Semantic roles & 50–950 ramp

primary

#66BD2A

secondary

#A978CB

accent

#41E7A3

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1408

muted

#7E827B

Preview Lab

Preview with #66BD2A

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

Preview Lab → · Contrast checker → · Palette generator →