#66BD2D#66BD2D

#66BD2D is a light, vivid yellow-green. Relative luminance 0.394; OKLCH L 71.7% C 0.193 H 136.0°. Best body text is #000000 at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#66BD2D
RGB	rgb(102, 189, 45)
HSL	hsl(96, 62%, 46%)
HSV	hsv(96, 76%, 74%)
CMYK	cmyk(46%, 0%, 76.2%, 25.9%)
CIE-LAB	lab(69.05, -49.89, 60.11)
CIE-LCH	lch(69.05, 78.11, 129.69°)
OKLab	oklab(71.65% -0.139 0.1341)
OKLCH	oklch(71.65% 0.193 136)
XYZ	xyz(24.1501, 39.4079, 8.8161)
Luminance	0.3941 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BD2D #842DBD

analogous

#AEBD2D #66BD2D #2DBD3C

triadic

#66BD2D #2D66BD #BD2D66

tetradic

#66BD2D #2DAEBD #842DBD #BD3C2D

square

#66BD2D #2DAEBD #842DBD #BD3C2D

split-complementary

#66BD2D #3C2DBD #BD2DAE

monochromatic

#315A15 #4B8C21 #66BD2D #86D652 #A8E183

Accessibility & contrast

On white

2.36

#66BD2D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.88

#66BD2D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BD2D

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BD2D	#FFFFFF	#000000	##000000
##66BD2D	1.00	2.36	8.88	8.88
#FFFFFF	2.36	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)

#C4AD09

Deuteranopia (green-blind)

#B8A63C

Tritanopia (blue-blind)

#62B6A2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bd2d;
/* rgb */ color: rgb(102, 189, 45);
/* oklch */ color: oklch(71.7% 0.193 136.0);

Tailwind

colors: {
  custom: {
    50: '#99d171',
    500: '#66bd2d',
    950: '#000000',
  },
}

SCSS

$custom: #66bd2d;
$custom-light: #99d171;
$custom-dark: #000000;

JSON

{
  "hex": "#66bd2d",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 45
  },
  "hsl": {
    "h": 96.25,
    "s": 61.538,
    "l": 45.882
  },
  "oklch": {
    "l": 0.71653,
    "c": 0.19318,
    "h": 136
  },
  "luminance": 0.39409
}

Semantic roles & 50–950 ramp

primary

#66BD2D

secondary

#AB7BCB

accent

#43E5A5

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1408

muted

#7E827B

Preview Lab

Preview with #66BD2D

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

Preview Lab → · Contrast checker → · Palette generator →