#66B223#66B223

#66B223 is a light, vivid yellow-green. Relative luminance 0.348; OKLCH L 68.8% C 0.185 H 134.3°. Best body text is #000000 at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#66B223
RGB	rgb(102, 178, 35)
HSL	hsl(92, 67%, 42%)
HSV	hsv(92, 80%, 70%)
CMYK	cmyk(42.7%, 0%, 80.3%, 30.2%)
CIE-LAB	lab(65.58, -46.04, 59.93)
CIE-LCH	lch(65.58, 75.57, 127.53°)
OKLab	oklab(68.79% -0.1293 0.1323)
OKLCH	oklch(68.79% 0.185 134.3)
XYZ	xyz(21.7028, 34.7857, 7.1605)
Luminance	0.3479 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B223 #6F23B2

analogous

#AEB223 #66B223 #23B228

triadic

#66B223 #2366B2 #B22366

tetradic

#66B223 #23AEB2 #6F23B2 #B22823

square

#66B223 #23AEB2 #6F23B2 #B22823

split-complementary

#66B223 #2823B2 #B223AE

monochromatic

#2B4C0F #497F19 #66B223 #84D83A #A4E26D

Accessibility & contrast

On white

2.64

#66B223 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.96

#66B223 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B223

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B223	#FFFFFF	#000000	##000000
##66B223	1.00	2.64	7.96	7.96
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.96	21.00	1.00	1.00
##000000	7.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AF9D34

Tritanopia (blue-blind)

#65AB98

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66b223;
/* rgb */ color: rgb(102, 178, 35);
/* oklch */ color: oklch(68.8% 0.185 134.3);

Tailwind

colors: {
  custom: {
    50: '#98c96b',
    500: '#66b223',
    950: '#000000',
  },
}

SCSS

$custom: #66b223;
$custom-light: #98c96b;
$custom-dark: #000000;

JSON

{
  "hex": "#66b223",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 35
  },
  "hsl": {
    "h": 91.888,
    "s": 67.136,
    "l": 41.765
  },
  "oklch": {
    "l": 0.68794,
    "c": 0.18496,
    "h": 134.3
  },
  "luminance": 0.34787
}

Semantic roles & 50–950 ramp

primary

#66B223

secondary

#9B68C9

accent

#3EEA99

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66B223

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

Preview Lab → · Contrast checker → · Palette generator →