#66BD23#66BD23

#66BD23 is a light, vivid yellow-green. Relative luminance 0.393; OKLCH L 71.6% C 0.198 H 135.4°. Best body text is #000000 at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#66BD23
RGB	rgb(102, 189, 35)
HSL	hsl(94, 69%, 44%)
HSV	hsv(94, 81%, 74%)
CMYK	cmyk(46%, 0%, 81.5%, 25.9%)
CIE-LAB	lab(69.00, -50.42, 63.06)
CIE-LCH	lch(69.00, 80.74, 128.65°)
OKLab	oklab(71.6% -0.141 0.1389)
OKLCH	oklch(71.6% 0.198 135.4)
XYZ	xyz(23.9799, 39.3398, 7.9196)
Luminance	0.3934 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BD23 #7A23BD

analogous

#B3BD23 #66BD23 #23BD2D

triadic

#66BD23 #2366BD #BD2366

tetradic

#66BD23 #23B3BD #7A23BD #BD2D23

square

#66BD23 #23B3BD #7A23BD #BD2D23

split-complementary

#66BD23 #2D23BD #BD23B3

monochromatic

#2E5610 #4A8919 #66BD23 #85DC41 #A6E575

Accessibility & contrast

On white

2.37

#66BD23 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.87

#66BD23 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BD23

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BD23	#FFFFFF	#000000	##000000
##66BD23	1.00	2.37	8.87	8.87
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.87	21.00	1.00	1.00
##000000	8.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AD00

Deuteranopia (green-blind)

#B9A636

Tritanopia (blue-blind)

#63B6A1

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bd23;
/* rgb */ color: rgb(102, 189, 35);
/* oklch */ color: oklch(71.6% 0.198 135.4);

Tailwind

colors: {
  custom: {
    50: '#9ad16c',
    500: '#66bd23',
    950: '#000000',
  },
}

SCSS

$custom: #66bd23;
$custom-light: #9ad16c;
$custom-dark: #000000;

JSON

{
  "hex": "#66bd23",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 35
  },
  "hsl": {
    "h": 93.896,
    "s": 68.75,
    "l": 43.922
  },
  "oklch": {
    "l": 0.71597,
    "c": 0.19795,
    "h": 135.4
  },
  "luminance": 0.39341
}

Semantic roles & 50–950 ramp

primary

#66BD23

secondary

#A46FCD

accent

#3CEC9F

background

#FAFCF6

surface

#F3F9EC

border

#CDD2C7

text

#0F1408

muted

#7F827A

Preview Lab

Preview with #66BD23

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

Preview Lab → · Contrast checker → · Palette generator →