#66B833#66B833

#66B833 is a light, vivid yellow-green. Relative luminance 0.373; OKLCH L 70.4% C 0.184 H 136.0°. Best body text is #000000 at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#66B833
RGB	rgb(102, 184, 51)
HSL	hsl(97, 57%, 46%)
HSV	hsv(97, 72%, 72%)
CMYK	cmyk(44.6%, 0%, 72.3%, 27.8%)
CIE-LAB	lab(67.53, -47.51, 56.53)
CIE-LCH	lch(67.53, 73.84, 130.04°)
OKLab	oklab(70.42% -0.1322 0.1275)
OKLCH	oklch(70.42% 0.184 136)
XYZ	xyz(23.2169, 37.3434, 9.1160)
Luminance	0.3735 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B833 #8533B8

analogous

#A8B833 #66B833 #33B842

triadic

#66B833 #3366B8 #B83366

tetradic

#66B833 #33A8B8 #8533B8 #B84233

square

#66B833 #33A8B8 #8533B8 #B84233

split-complementary

#66B833 #4233B8 #B833A8

monochromatic

#315818 #4B8826 #66B833 #86D158 #A9DE88

Accessibility & contrast

On white

2.48

#66B833 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.47

#66B833 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B833

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B833	#FFFFFF	#000000	##000000
##66B833	1.00	2.48	8.47	8.47
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.47	21.00	1.00	1.00
##000000	8.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA91B

Deuteranopia (green-blind)

#B4A240

Tritanopia (blue-blind)

#63B19E

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66b833;
/* rgb */ color: rgb(102, 184, 51);
/* oklch */ color: oklch(70.4% 0.184 136.0);

Tailwind

colors: {
  custom: {
    50: '#98ce73',
    500: '#66b833',
    950: '#000000',
  },
}

SCSS

$custom: #66b833;
$custom-light: #98ce73;
$custom-dark: #000000;

JSON

{
  "hex": "#66b833",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 51
  },
  "hsl": {
    "h": 96.992,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.70424,
    "c": 0.18367,
    "h": 136
  },
  "luminance": 0.37345
}

Semantic roles & 50–950 ramp

primary

#66B833

secondary

#AC7FC8

accent

#48E0A6

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #66B833

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

Preview Lab → · Contrast checker → · Palette generator →