#66BD2B#66BD2B

#66BD2B is a light, vivid yellow-green. Relative luminance 0.394; OKLCH L 71.6% C 0.194 H 135.9°. Best body text is #000000 at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#66BD2B
RGB	rgb(102, 189, 43)
HSL	hsl(96, 63%, 45%)
HSV	hsv(96, 77%, 74%)
CMYK	cmyk(46%, 0%, 77.2%, 25.9%)
CIE-LAB	lab(69.03, -50.01, 60.74)
CIE-LCH	lch(69.03, 78.68, 129.46°)
OKLab	oklab(71.64% -0.1395 0.1352)
OKLCH	oklch(71.64% 0.194 135.9)
XYZ	xyz(24.1125, 39.3929, 8.6181)
Luminance	0.3939 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BD2B #822BBD

analogous

#AFBD2B #66BD2B #2BBD39

triadic

#66BD2B #2B66BD #BD2B66

tetradic

#66BD2B #2BAFBD #822BBD #BD392B

square

#66BD2B #2BAFBD #822BBD #BD392B

split-complementary

#66BD2B #392BBD #BD2BAF

monochromatic

#305914 #4B8B20 #66BD2B #86D74E #A8E280

Accessibility & contrast

On white

2.37

#66BD2B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.88

#66BD2B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BD2B

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BD2B	#FFFFFF	#000000	##000000
##66BD2B	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)

#C4AD01

Deuteranopia (green-blind)

#B8A63B

Tritanopia (blue-blind)

#62B6A2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bd2b;
/* rgb */ color: rgb(102, 189, 43);
/* oklch */ color: oklch(71.6% 0.194 135.9);

Tailwind

colors: {
  custom: {
    50: '#99d170',
    500: '#66bd2b',
    950: '#000000',
  },
}

SCSS

$custom: #66bd2b;
$custom-light: #99d170;
$custom-dark: #000000;

JSON

{
  "hex": "#66bd2b",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 43
  },
  "hsl": {
    "h": 95.753,
    "s": 62.931,
    "l": 45.49
  },
  "oklch": {
    "l": 0.71641,
    "c": 0.19422,
    "h": 135.9
  },
  "luminance": 0.39394
}

Semantic roles & 50–950 ramp

primary

#66BD2B

secondary

#AA79CB

accent

#42E6A4

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1408

muted

#7E827B

Preview Lab

Preview with #66BD2B

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

Preview Lab → · Contrast checker → · Palette generator →