#66B52B#66B52B

#66B52B is a light, vivid yellow-green. Relative luminance 0.360; OKLCH L 69.6% C 0.185 H 135.1°. Best body text is #000000 at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#66B52B
RGB	rgb(102, 181, 43)
HSL	hsl(94, 62%, 44%)
HSV	hsv(94, 76%, 71%)
CMYK	cmyk(43.6%, 0%, 76.2%, 29%)
CIE-LAB	lab(66.55, -46.82, 58.36)
CIE-LCH	lch(66.55, 74.82, 128.74°)
OKLab	oklab(69.6% -0.1309 0.1302)
OKLCH	oklch(69.6% 0.185 135.1)
XYZ	xyz(22.4389, 36.0456, 8.0602)
Luminance	0.3605 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B52B #7A2BB5

analogous

#ABB52B #66B52B #2BB535

triadic

#66B52B #2B66B5 #B52B66

tetradic

#66B52B #2BABB5 #7A2BB5 #B5352B

square

#66B52B #2BABB5 #7A2BB5 #B5352B

split-complementary

#66B52B #352BB5 #B52BAB

monochromatic

#2E5214 #4A841F #66B52B #85D449 #A6E07B

Accessibility & contrast

On white

2.56

#66B52B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.21

#66B52B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B52B

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B52B	#FFFFFF	#000000	##000000
##66B52B	1.00	2.56	8.21	8.21
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.21	21.00	1.00	1.00
##000000	8.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCA609

Deuteranopia (green-blind)

#B19F3A

Tritanopia (blue-blind)

#64AE9B

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66b52b;
/* rgb */ color: rgb(102, 181, 43);
/* oklch */ color: oklch(69.6% 0.185 135.1);

Tailwind

colors: {
  custom: {
    50: '#98cc6f',
    500: '#66b52b',
    950: '#000000',
  },
}

SCSS

$custom: #66b52b;
$custom-light: #98cc6f;
$custom-dark: #000000;

JSON

{
  "hex": "#66b52b",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 43
  },
  "hsl": {
    "h": 94.348,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.69605,
    "c": 0.1846,
    "h": 135.1
  },
  "luminance": 0.36047
}

Semantic roles & 50–950 ramp

primary

#66B52B

secondary

#A474C8

accent

#43E5A0

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B52B

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

Preview Lab → · Contrast checker → · Palette generator →