#66B731#66B731

#66B731 is a light, vivid yellow-green. Relative luminance 0.369; OKLCH L 70.2% C 0.184 H 135.8°. Best body text is #000000 at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#66B731
RGB	rgb(102, 183, 49)
HSL	hsl(96, 58%, 45%)
HSV	hsv(96, 73%, 72%)
CMYK	cmyk(44.3%, 0%, 73.2%, 28.2%)
CIE-LAB	lab(67.21, -47.24, 56.93)
CIE-LCH	lch(67.21, 73.98, 129.69°)
OKLab	oklab(70.16% -0.1316 0.1281)
OKLCH	oklch(70.16% 0.184 135.8)
XYZ	xyz(22.9668, 36.9121, 8.8197)
Luminance	0.3691 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B731 #8231B7

analogous

#A9B731 #66B731 #31B73F

triadic

#66B731 #3166B7 #B73166

tetradic

#66B731 #31A9B7 #8231B7 #B73F31

square

#66B731 #31A9B7 #8231B7 #B73F31

split-complementary

#66B731 #3F31B7 #B731A9

monochromatic

#305617 #4B8724 #66B731 #86D154 #A8DE84

Accessibility & contrast

On white

2.51

#66B731 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.38

#66B731 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B731

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B731	#FFFFFF	#000000	##000000
##66B731	1.00	2.51	8.38	8.38
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.38	21.00	1.00	1.00
##000000	8.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEA818

Deuteranopia (green-blind)

#B3A13E

Tritanopia (blue-blind)

#63B09D

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66b731;
/* rgb */ color: rgb(102, 183, 49);
/* oklch */ color: oklch(70.2% 0.184 135.8);

Tailwind

colors: {
  custom: {
    50: '#98cd72',
    500: '#66b731',
    950: '#000000',
  },
}

SCSS

$custom: #66b731;
$custom-light: #98cd72;
$custom-dark: #000000;

JSON

{
  "hex": "#66b731",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 49
  },
  "hsl": {
    "h": 96.269,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.70155,
    "c": 0.18365,
    "h": 135.8
  },
  "luminance": 0.36914
}

Semantic roles & 50–950 ramp

primary

#66B731

secondary

#AA7CC8

accent

#47E1A4

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B731

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

Preview Lab → · Contrast checker → · Palette generator →