#66B426#66B426

#66B426 is a light, vivid yellow-green. Relative luminance 0.356; OKLCH L 69.3% C 0.186 H 134.7°. Best body text is #000000 at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#66B426
RGB	rgb(102, 180, 38)
HSL	hsl(93, 65%, 43%)
HSV	hsv(93, 79%, 71%)
CMYK	cmyk(43.3%, 0%, 78.9%, 29.4%)
CIE-LAB	lab(66.22, -46.70, 59.63)
CIE-LCH	lch(66.22, 75.74, 128.06°)
OKLab	oklab(69.32% -0.1309 0.1321)
OKLCH	oklch(69.32% 0.186 134.7)
XYZ	xyz(22.1501, 35.6060, 7.5389)
Luminance	0.3561 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B426 #7426B4

analogous

#ADB426 #66B426 #26B42D

triadic

#66B426 #2666B4 #B42666

tetradic

#66B426 #26ADB4 #7426B4 #B42D26

square

#66B426 #26ADB4 #7426B4 #B42D26

split-complementary

#66B426 #2D26B4 #B426AD

monochromatic

#2D4F11 #49811B #66B426 #84D740 #A5E173

Accessibility & contrast

On white

2.59

#66B426 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.12

#66B426 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B426

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B426	#FFFFFF	#000000	##000000
##66B426	1.00	2.59	8.12	8.12
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.12	21.00	1.00	1.00
##000000	8.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA500

Deuteranopia (green-blind)

#B19F36

Tritanopia (blue-blind)

#64AD9A

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66b426;
/* rgb */ color: rgb(102, 180, 38);
/* oklch */ color: oklch(69.3% 0.186 134.7);

Tailwind

colors: {
  custom: {
    50: '#98cb6c',
    500: '#66b426',
    950: '#000000',
  },
}

SCSS

$custom: #66b426;
$custom-light: #98cb6c;
$custom-dark: #000000;

JSON

{
  "hex": "#66b426",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 38
  },
  "hsl": {
    "h": 92.958,
    "s": 65.138,
    "l": 42.745
  },
  "oklch": {
    "l": 0.6932,
    "c": 0.18595,
    "h": 134.7
  },
  "luminance": 0.35607
}

Semantic roles & 50–950 ramp

primary

#66B426

secondary

#9F6DC9

accent

#40E89C

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B426

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

Preview Lab → · Contrast checker → · Palette generator →