#66B333#66B333

#66B333 is a light, vivid yellow-green. Relative luminance 0.353; OKLCH L 69.2% C 0.177 H 135.6°. Best body text is #000000 at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#66B333
RGB	rgb(102, 179, 51)
HSL	hsl(96, 56%, 45%)
HSV	hsv(96, 72%, 70%)
CMYK	cmyk(43%, 0%, 71.5%, 29.8%)
CIE-LAB	lab(65.98, -45.47, 54.96)
CIE-LCH	lch(65.98, 71.33, 129.60°)
OKLab	oklab(69.15% -0.1267 0.1242)
OKLCH	oklch(69.15% 0.177 135.6)
XYZ	xyz(22.1966, 35.3027, 8.7759)
Luminance	0.3530 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B333 #8033B3

analogous

#A6B333 #66B333 #33B340

triadic

#66B333 #3366B3 #B33366

tetradic

#66B333 #33A6B3 #8033B3 #B34033

square

#66B333 #33A6B3 #8033B3 #B34033

split-complementary

#66B333 #4033B3 #B333A6

monochromatic

#305418 #4B8325 #66B333 #85CE55 #A7DC84

Accessibility & contrast

On white

2.61

#66B333 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.06

#66B333 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B333

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B333	#FFFFFF	#000000	##000000
##66B333	1.00	2.61	8.06	8.06
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.06	21.00	1.00	1.00
##000000	8.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A41D

Deuteranopia (green-blind)

#AF9E3F

Tritanopia (blue-blind)

#64AC9A

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66b333;
/* rgb */ color: rgb(102, 179, 51);
/* oklch */ color: oklch(69.2% 0.177 135.6);

Tailwind

colors: {
  custom: {
    50: '#98ca73',
    500: '#66b333',
    950: '#000000',
  },
}

SCSS

$custom: #66b333;
$custom-light: #98ca73;
$custom-dark: #000000;

JSON

{
  "hex": "#66b333",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 51
  },
  "hsl": {
    "h": 96.094,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.69153,
    "c": 0.17744,
    "h": 135.6
  },
  "luminance": 0.35304
}

Semantic roles & 50–950 ramp

primary

#66B333

secondary

#A87CC6

accent

#49DFA3

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B333

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

Preview Lab → · Contrast checker → · Palette generator →