#66B128#66B128

#66B128 is a light, vivid yellow-green. Relative luminance 0.344; OKLCH L 68.6% C 0.181 H 134.5°. Best body text is #000000 at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#66B128
RGB	rgb(102, 177, 40)
HSL	hsl(93, 63%, 43%)
HSV	hsv(93, 77%, 69%)
CMYK	cmyk(42.4%, 0%, 77.4%, 30.6%)
CIE-LAB	lab(65.30, -45.36, 58.13)
CIE-LCH	lch(65.30, 73.74, 127.97°)
OKLab	oklab(68.57% -0.1272 0.1293)
OKLCH	oklch(68.57% 0.181 134.5)
XYZ	xyz(21.5842, 34.4211, 7.5137)
Luminance	0.3442 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B128 #7328B1

analogous

#AAB128 #66B128 #28B12F

triadic

#66B128 #2866B1 #B12866

tetradic

#66B128 #28AAB1 #7328B1 #B12F28

square

#66B128 #28AAB1 #7328B1 #B12F28

split-complementary

#66B128 #2F28B1 #B128AA

monochromatic

#2C4D11 #497F1D #66B128 #84D442 #A5E074

Accessibility & contrast

On white

2.66

#66B128 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.88

#66B128 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B128

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B128	#FFFFFF	#000000	##000000
##66B128	1.00	2.66	7.88	7.88
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.88	21.00	1.00	1.00
##000000	7.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A202

Deuteranopia (green-blind)

#AE9C37

Tritanopia (blue-blind)

#65AA97

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #66b128;
/* rgb */ color: rgb(102, 177, 40);
/* oklch */ color: oklch(68.6% 0.181 134.5);

Tailwind

colors: {
  custom: {
    50: '#98c96d',
    500: '#66b128',
    950: '#000000',
  },
}

SCSS

$custom: #66b128;
$custom-light: #98c96d;
$custom-dark: #000000;

JSON

{
  "hex": "#66b128",
  "rgb": {
    "r": 102,
    "g": 177,
    "b": 40
  },
  "hsl": {
    "h": 92.847,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.68567,
    "c": 0.18132,
    "h": 134.5
  },
  "luminance": 0.34422
}

Semantic roles & 50–950 ramp

primary

#66B128

secondary

#9F6EC7

accent

#42E69C

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B128

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

Preview Lab → · Contrast checker → · Palette generator →