#66B536#66B536

#66B536 is a light, vivid yellow-green. Relative luminance 0.361; OKLCH L 69.7% C 0.178 H 136.0°. Best body text is #000000 at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#66B536
RGB	rgb(102, 181, 54)
HSL	hsl(97, 54%, 46%)
HSV	hsv(97, 70%, 71%)
CMYK	cmyk(43.6%, 0%, 70.2%, 29%)
CIE-LAB	lab(66.62, -46.07, 54.47)
CIE-LCH	lch(66.62, 71.34, 130.22°)
OKLab	oklab(69.69% -0.1281 0.1236)
OKLCH	oklch(69.69% 0.178 136)
XYZ	xyz(22.6686, 36.1375, 9.2701)
Luminance	0.3614 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B536 #8536B5

analogous

#A5B536 #66B536 #36B545

triadic

#66B536 #3666B5 #B53666

tetradic

#66B536 #36A5B5 #8536B5 #B54536

square

#66B536 #36A5B5 #8536B5 #B54536

split-complementary

#66B536 #4536B5 #B536A5

monochromatic

#31571A #4B8628 #66B536 #86CE5A #A9DC89

Accessibility & contrast

On white

2.55

#66B536 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.23

#66B536 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B536

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B536	#FFFFFF	#000000	##000000
##66B536	1.00	2.55	8.23	8.23
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.23	21.00	1.00	1.00
##000000	8.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA622

Deuteranopia (green-blind)

#B1A042

Tritanopia (blue-blind)

#63AE9C

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66b536;
/* rgb */ color: rgb(102, 181, 54);
/* oklch */ color: oklch(69.7% 0.178 136.0);

Tailwind

colors: {
  custom: {
    50: '#98cc74',
    500: '#66b536',
    950: '#000000',
  },
}

SCSS

$custom: #66b536;
$custom-light: #98cc74;
$custom-dark: #000000;

JSON

{
  "hex": "#66b536",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 54
  },
  "hsl": {
    "h": 97.323,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.69685,
    "c": 0.17802,
    "h": 136
  },
  "luminance": 0.36139
}

Semantic roles & 50–950 ramp

primary

#66B536

secondary

#AC81C6

accent

#4ADDA6

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #66B536

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

Preview Lab → · Contrast checker → · Palette generator →