#66B533#66B533

#66B533 is a light, vivid yellow-green. Relative luminance 0.361; OKLCH L 69.7% C 0.180 H 135.8°. Best body text is #000000 at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#66B533
RGB	rgb(102, 181, 51)
HSL	hsl(96, 56%, 45%)
HSV	hsv(96, 72%, 71%)
CMYK	cmyk(43.6%, 0%, 71.8%, 29%)
CIE-LAB	lab(66.60, -46.29, 55.59)
CIE-LCH	lch(66.60, 72.34, 129.78°)
OKLab	oklab(69.66% -0.1289 0.1256)
OKLCH	oklch(69.66% 0.18 135.8)
XYZ	xyz(22.6003, 36.1102, 8.9104)
Luminance	0.3611 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B533 #8233B5

analogous

#A7B533 #66B533 #33B541

triadic

#66B533 #3366B5 #B53366

tetradic

#66B533 #33A7B5 #8233B5 #B54133

square

#66B533 #33A7B5 #8233B5 #B54133

split-complementary

#66B533 #4133B5 #B533A7

monochromatic

#305618 #4B8526 #66B533 #86CF56 #A8DD86

Accessibility & contrast

On white

2.55

#66B533 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.22

#66B533 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B533

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B533	#FFFFFF	#000000	##000000
##66B533	1.00	2.55	8.22	8.22
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.22	21.00	1.00	1.00
##000000	8.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA61D

Deuteranopia (green-blind)

#B1A03F

Tritanopia (blue-blind)

#63AE9C

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66b533;
/* rgb */ color: rgb(102, 181, 51);
/* oklch */ color: oklch(69.7% 0.180 135.8);

Tailwind

colors: {
  custom: {
    50: '#98cc73',
    500: '#66b533',
    950: '#000000',
  },
}

SCSS

$custom: #66b533;
$custom-light: #98cc73;
$custom-dark: #000000;

JSON

{
  "hex": "#66b533",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 51
  },
  "hsl": {
    "h": 96.462,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.69661,
    "c": 0.17995,
    "h": 135.8
  },
  "luminance": 0.36112
}

Semantic roles & 50–950 ramp

primary

#66B533

secondary

#AA7DC6

accent

#48DFA4

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B533

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

Preview Lab → · Contrast checker → · Palette generator →