#66B233#66B233

#66B233 is a light, vivid yellow-green. Relative luminance 0.349; OKLCH L 68.9% C 0.176 H 135.5°. Best body text is #000000 at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#66B233
RGB	rgb(102, 178, 51)
HSL	hsl(96, 55%, 45%)
HSV	hsv(96, 71%, 70%)
CMYK	cmyk(42.7%, 0%, 71.3%, 30.2%)
CIE-LAB	lab(65.67, -45.06, 54.64)
CIE-LCH	lch(65.67, 70.83, 129.51°)
OKLab	oklab(68.9% -0.1256 0.1236)
OKLCH	oklch(68.9% 0.176 135.5)
XYZ	xyz(21.9969, 34.9033, 8.7093)
Luminance	0.3491 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B233 #7F33B2

analogous

#A5B233 #66B233 #33B240

triadic

#66B233 #3366B2 #B23366

tetradic

#66B233 #33A5B2 #7F33B2 #B24033

square

#66B233 #33A5B2 #7F33B2 #B24033

split-complementary

#66B233 #4033B2 #B233A5

monochromatic

#2F5318 #4B8225 #66B233 #85CE54 #A7DC84

Accessibility & contrast

On white

2.63

#66B233 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.98

#66B233 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B233

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B233	#FFFFFF	#000000	##000000
##66B233	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)

#B8A31E

Deuteranopia (green-blind)

#AE9D3F

Tritanopia (blue-blind)

#64AB99

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66b233;
/* rgb */ color: rgb(102, 178, 51);
/* oklch */ color: oklch(68.9% 0.176 135.5);

Tailwind

colors: {
  custom: {
    50: '#98c972',
    500: '#66b233',
    950: '#000000',
  },
}

SCSS

$custom: #66b233;
$custom-light: #98c972;
$custom-dark: #000000;

JSON

{
  "hex": "#66b233",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 51
  },
  "hsl": {
    "h": 95.906,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.68898,
    "c": 0.17619,
    "h": 135.5
  },
  "luminance": 0.34905
}

Semantic roles & 50–950 ramp

primary

#66B233

secondary

#A87CC5

accent

#49DFA3

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B233

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

Preview Lab → · Contrast checker → · Palette generator →