#66B328#66B328

#66B328 is a light, vivid yellow-green. Relative luminance 0.352; OKLCH L 69.1% C 0.184 H 134.7°. Best body text is #000000 at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#66B328
RGB	rgb(102, 179, 40)
HSL	hsl(93, 63%, 43%)
HSV	hsv(93, 78%, 70%)
CMYK	cmyk(43%, 0%, 77.7%, 29.8%)
CIE-LAB	lab(65.92, -46.18, 58.72)
CIE-LCH	lch(65.92, 74.71, 128.18°)
OKLab	oklab(69.08% -0.1293 0.1305)
OKLCH	oklch(69.08% 0.184 134.7)
XYZ	xyz(21.9821, 35.2169, 7.6463)
Luminance	0.3522 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B328 #7528B3

analogous

#ABB328 #66B328 #28B32F

triadic

#66B328 #2866B3 #B32866

tetradic

#66B328 #28ABB3 #7528B3 #B32F28

square

#66B328 #28ABB3 #7528B3 #B32F28

split-complementary

#66B328 #2F28B3 #B328AB

monochromatic

#2D4F12 #49811D #66B328 #84D543 #A5E075

Accessibility & contrast

On white

2.61

#66B328 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.04

#66B328 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B328

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B328	#FFFFFF	#000000	##000000
##66B328	1.00	2.61	8.04	8.04
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.04	21.00	1.00	1.00
##000000	8.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA400

Deuteranopia (green-blind)

#B09E37

Tritanopia (blue-blind)

#64AC99

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66b328;
/* rgb */ color: rgb(102, 179, 40);
/* oklch */ color: oklch(69.1% 0.184 134.7);

Tailwind

colors: {
  custom: {
    50: '#98ca6d',
    500: '#66b328',
    950: '#000000',
  },
}

SCSS

$custom: #66b328;
$custom-light: #98ca6d;
$custom-dark: #000000;

JSON

{
  "hex": "#66b328",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 40
  },
  "hsl": {
    "h": 93.237,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.69077,
    "c": 0.18375,
    "h": 134.7
  },
  "luminance": 0.35218
}

Semantic roles & 50–950 ramp

primary

#66B328

secondary

#A06FC8

accent

#41E69D

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B328

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

Preview Lab → · Contrast checker → · Palette generator →