#66BA2B#66BA2B

#66BA2B is a light, vivid yellow-green. Relative luminance 0.381; OKLCH L 70.9% C 0.191 H 135.6°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#66BA2B
RGB	rgb(102, 186, 43)
HSL	hsl(95, 62%, 45%)
HSV	hsv(95, 77%, 73%)
CMYK	cmyk(45.2%, 0%, 76.9%, 27.1%)
CIE-LAB	lab(68.11, -48.82, 59.85)
CIE-LCH	lch(68.11, 77.24, 129.20°)
OKLab	oklab(70.88% -0.1363 0.1333)
OKLCH	oklch(70.88% 0.191 135.6)
XYZ	xyz(23.4739, 38.1156, 8.4052)
Luminance	0.3812 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BA2B #7F2BBA

analogous

#ADBA2B #66BA2B #2BBA38

triadic

#66BA2B #2B66BA #BA2B66

tetradic

#66BA2B #2BADBA #7F2BBA #BA382B

square

#66BA2B #2BADBA #7F2BBA #BA382B

split-complementary

#66BA2B #382BBA #BA2BAD

monochromatic

#2F5714 #4B8820 #66BA2B #85D64C #A7E17E

Accessibility & contrast

On white

2.44

#66BA2B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#66BA2B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BA2B

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BA2B	#FFFFFF	#000000	##000000
##66BA2B	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1AA04

Deuteranopia (green-blind)

#B6A33A

Tritanopia (blue-blind)

#63B39F

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66ba2b;
/* rgb */ color: rgb(102, 186, 43);
/* oklch */ color: oklch(70.9% 0.191 135.6);

Tailwind

colors: {
  custom: {
    50: '#99cf6f',
    500: '#66ba2b',
    950: '#000000',
  },
}

SCSS

$custom: #66ba2b;
$custom-light: #99cf6f;
$custom-dark: #000000;

JSON

{
  "hex": "#66ba2b",
  "rgb": {
    "r": 102,
    "g": 186,
    "b": 43
  },
  "hsl": {
    "h": 95.245,
    "s": 62.445,
    "l": 44.902
  },
  "oklch": {
    "l": 0.70878,
    "c": 0.19064,
    "h": 135.6
  },
  "luminance": 0.38117
}

Semantic roles & 50–950 ramp

primary

#66BA2B

secondary

#A877CA

accent

#42E6A2

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1408

muted

#7E827B

Preview Lab

Preview with #66BA2B

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

Preview Lab → · Contrast checker → · Palette generator →