#66BF2D#66BF2D

#66BF2D is a light, vivid yellow-green. Relative luminance 0.403; OKLCH L 72.2% C 0.196 H 136.2°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#66BF2D
RGB	rgb(102, 191, 45)
HSL	hsl(97, 62%, 46%)
HSV	hsv(97, 76%, 75%)
CMYK	cmyk(46.6%, 0%, 76.4%, 25.1%)
CIE-LAB	lab(69.66, -50.67, 60.70)
CIE-LCH	lch(69.66, 79.07, 129.85°)
OKLab	oklab(72.16% -0.1411 0.1354)
OKLCH	oklch(72.16% 0.196 136.2)
XYZ	xyz(24.5833, 40.2743, 8.9605)
Luminance	0.4028 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BF2D #862DBF

analogous

#AFBF2D #66BF2D #2DBF3D

triadic

#66BF2D #2D66BF #BF2D66

tetradic

#66BF2D #2DAFBF #862DBF #BF3D2D

square

#66BF2D #2DAFBF #862DBF #BF3D2D

split-complementary

#66BF2D #3D2DBF #BF2DAF

monochromatic

#315C16 #4C8D21 #66BF2D #86D653 #A9E284

Accessibility & contrast

On white

2.32

#66BF2D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#66BF2D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BF2D

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BF2D	#FFFFFF	#000000	##000000
##66BF2D	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6AF07

Deuteranopia (green-blind)

#BAA73D

Tritanopia (blue-blind)

#62B8A4

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66bf2d;
/* rgb */ color: rgb(102, 191, 45);
/* oklch */ color: oklch(72.2% 0.196 136.2);

Tailwind

colors: {
  custom: {
    50: '#99d371',
    500: '#66bf2d',
    950: '#000000',
  },
}

SCSS

$custom: #66bf2d;
$custom-light: #99d371;
$custom-dark: #000000;

JSON

{
  "hex": "#66bf2d",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 45
  },
  "hsl": {
    "h": 96.575,
    "s": 61.864,
    "l": 46.275
  },
  "oklch": {
    "l": 0.72161,
    "c": 0.19558,
    "h": 136.2
  },
  "luminance": 0.40276
}

Semantic roles & 50–950 ramp

primary

#66BF2D

secondary

#AD7CCB

accent

#43E5A6

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1408

muted

#7E837B

Preview Lab

Preview with #66BF2D

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

Preview Lab → · Contrast checker → · Palette generator →