#66B331#66B331

#66B331 is a light, vivid yellow-green. Relative luminance 0.353; OKLCH L 69.1% C 0.179 H 135.4°. Best body text is #000000 at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#66B331
RGB	rgb(102, 179, 49)
HSL	hsl(96, 57%, 45%)
HSV	hsv(96, 73%, 70%)
CMYK	cmyk(43%, 0%, 72.6%, 29.8%)
CIE-LAB	lab(65.97, -45.61, 55.69)
CIE-LCH	lch(65.97, 71.98, 129.32°)
OKLab	oklab(69.14% -0.1272 0.1255)
OKLCH	oklch(69.14% 0.179 135.4)
XYZ	xyz(22.1534, 35.2855, 8.5486)
Luminance	0.3529 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B331 #7E31B3

analogous

#A7B331 #66B331 #31B33D

triadic

#66B331 #3166B3 #B33166

tetradic

#66B331 #31A7B3 #7E31B3 #B33D31

square

#66B331 #31A7B3 #7E31B3 #B33D31

split-complementary

#66B331 #3D31B3 #B331A7

monochromatic

#2F5317 #4B8324 #66B331 #85D052 #A7DD82

Accessibility & contrast

On white

2.61

#66B331 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.06

#66B331 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B331

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B331	#FFFFFF	#000000	##000000
##66B331	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)

#BAA41A

Deuteranopia (green-blind)

#AF9E3E

Tritanopia (blue-blind)

#64AC9A

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66b331;
/* rgb */ color: rgb(102, 179, 49);
/* oklch */ color: oklch(69.1% 0.179 135.4);

Tailwind

colors: {
  custom: {
    50: '#98ca71',
    500: '#66b331',
    950: '#000000',
  },
}

SCSS

$custom: #66b331;
$custom-light: #98ca71;
$custom-dark: #000000;

JSON

{
  "hex": "#66b331",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 49
  },
  "hsl": {
    "h": 95.538,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.69137,
    "c": 0.17869,
    "h": 135.4
  },
  "luminance": 0.35287
}

Semantic roles & 50–950 ramp

primary

#66B331

secondary

#A77AC6

accent

#48E0A2

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B331

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

Preview Lab → · Contrast checker → · Palette generator →