#66B131#66B131

#66B131 is a light, vivid yellow-green. Relative luminance 0.345; OKLCH L 68.6% C 0.176 H 135.2°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#66B131
RGB	rgb(102, 177, 49)
HSL	hsl(95, 57%, 44%)
HSV	hsv(95, 72%, 69%)
CMYK	cmyk(42.4%, 0%, 72.3%, 30.6%)
CIE-LAB	lab(65.35, -44.79, 55.06)
CIE-LCH	lch(65.35, 70.98, 129.13°)
OKLab	oklab(68.63% -0.125 0.1242)
OKLCH	oklch(68.63% 0.176 135.2)
XYZ	xyz(21.7555, 34.4896, 8.4160)
Luminance	0.3449 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B131 #7C31B1

analogous

#A6B131 #66B131 #31B13C

triadic

#66B131 #3166B1 #B13166

tetradic

#66B131 #31A6B1 #7C31B1 #B13C31

square

#66B131 #31A6B1 #7C31B1 #B13C31

split-complementary

#66B131 #3C31B1 #B131A6

monochromatic

#2F5116 #4A8124 #66B131 #85CF51 #A6DC80

Accessibility & contrast

On white

2.66

#66B131 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#66B131 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B131

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B131	#FFFFFF	#000000	##000000
##66B131	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A31A

Deuteranopia (green-blind)

#AD9C3D

Tritanopia (blue-blind)

#64AA98

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66b131;
/* rgb */ color: rgb(102, 177, 49);
/* oklch */ color: oklch(68.6% 0.176 135.2);

Tailwind

colors: {
  custom: {
    50: '#98c971',
    500: '#66b131',
    950: '#000000',
  },
}

SCSS

$custom: #66b131;
$custom-light: #98c971;
$custom-dark: #000000;

JSON

{
  "hex": "#66b131",
  "rgb": {
    "r": 102,
    "g": 177,
    "b": 49
  },
  "hsl": {
    "h": 95.156,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.68629,
    "c": 0.17618,
    "h": 135.2
  },
  "luminance": 0.34491
}

Semantic roles & 50–950 ramp

primary

#66B131

secondary

#A579C5

accent

#48E0A1

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B131

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

Preview Lab → · Contrast checker → · Palette generator →