#66B830#66B830

#66B830 is a light, vivid yellow-green. Relative luminance 0.373; OKLCH L 70.4% C 0.185 H 135.8°. Best body text is #000000 at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#66B830
RGB	rgb(102, 184, 48)
HSL	hsl(96, 59%, 45%)
HSV	hsv(96, 74%, 72%)
CMYK	cmyk(44.6%, 0%, 73.9%, 27.8%)
CIE-LAB	lab(67.51, -47.71, 57.59)
CIE-LCH	lch(67.51, 74.79, 129.64°)
OKLab	oklab(70.4% -0.133 0.1293)
OKLCH	oklch(70.4% 0.185 135.8)
XYZ	xyz(23.1529, 37.3178, 8.7788)
Luminance	0.3732 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B830 #8230B8

analogous

#AAB830 #66B830 #30B83E

triadic

#66B830 #3066B8 #B83066

tetradic

#66B830 #30AAB8 #8230B8 #B83E30

square

#66B830 #30AAB8 #8230B8 #B83E30

split-complementary

#66B830 #3E30B8 #B830AA

monochromatic

#305717 #4B8723 #66B830 #86D253 #A8DF84

Accessibility & contrast

On white

2.48

#66B830 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.46

#66B830 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B830

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B830	#FFFFFF	#000000	##000000
##66B830	1.00	2.48	8.46	8.46
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.46	21.00	1.00	1.00
##000000	8.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA915

Deuteranopia (green-blind)

#B4A23E

Tritanopia (blue-blind)

#63B19E

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66b830;
/* rgb */ color: rgb(102, 184, 48);
/* oklch */ color: oklch(70.4% 0.185 135.8);

Tailwind

colors: {
  custom: {
    50: '#99ce72',
    500: '#66b830',
    950: '#000000',
  },
}

SCSS

$custom: #66b830;
$custom-light: #99ce72;
$custom-dark: #000000;

JSON

{
  "hex": "#66b830",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 48
  },
  "hsl": {
    "h": 96.176,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.70402,
    "c": 0.18546,
    "h": 135.8
  },
  "luminance": 0.37319
}

Semantic roles & 50–950 ramp

primary

#66B830

secondary

#AA7CC8

accent

#46E2A4

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B830

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

Preview Lab → · Contrast checker → · Palette generator →