#66B230#66B230

#66B230 is a light, vivid yellow-green. Relative luminance 0.349; OKLCH L 68.9% C 0.178 H 135.2°. Best body text is #000000 at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#66B230
RGB	rgb(102, 178, 48)
HSL	hsl(95, 58%, 44%)
HSV	hsv(95, 73%, 70%)
CMYK	cmyk(42.7%, 0%, 73%, 30.2%)
CIE-LAB	lab(65.65, -45.27, 55.74)
CIE-LCH	lch(65.65, 71.80, 129.09°)
OKLab	oklab(68.88% -0.1264 0.1254)
OKLCH	oklch(68.88% 0.178 135.2)
XYZ	xyz(21.9329, 34.8777, 8.3721)
Luminance	0.3488 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B230 #7C30B2

analogous

#A7B230 #66B230 #30B23B

triadic

#66B230 #3066B2 #B23066

tetradic

#66B230 #30A7B2 #7C30B2 #B23B30

square

#66B230 #30A7B2 #7C30B2 #B23B30

split-complementary

#66B230 #3B30B2 #B230A7

monochromatic

#2F5216 #4A8223 #66B230 #85D050 #A6DD80

Accessibility & contrast

On white

2.63

#66B230 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.98

#66B230 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B230

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B230	#FFFFFF	#000000	##000000
##66B230	1.00	2.63	7.98	7.98
#FFFFFF	2.63	1.00	21.00	21.00
#000000	7.98	21.00	1.00	1.00
##000000	7.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A318

Deuteranopia (green-blind)

#AE9D3D

Tritanopia (blue-blind)

#64AB99

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66b230;
/* rgb */ color: rgb(102, 178, 48);
/* oklch */ color: oklch(68.9% 0.178 135.2);

Tailwind

colors: {
  custom: {
    50: '#98c971',
    500: '#66b230',
    950: '#000000',
  },
}

SCSS

$custom: #66b230;
$custom-light: #98c971;
$custom-dark: #000000;

JSON

{
  "hex": "#66b230",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 48
  },
  "hsl": {
    "h": 95.077,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.68876,
    "c": 0.17805,
    "h": 135.2
  },
  "luminance": 0.34879
}

Semantic roles & 50–950 ramp

primary

#66B230

secondary

#A578C6

accent

#47E1A1

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B230

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

Preview Lab → · Contrast checker → · Palette generator →