#66B535#66B535

#66B535 is a light, vivid yellow-green. Relative luminance 0.361; OKLCH L 69.7% C 0.179 H 135.9°. Best body text is #000000 at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#66B535
RGB	rgb(102, 181, 53)
HSL	hsl(97, 55%, 46%)
HSV	hsv(97, 71%, 71%)
CMYK	cmyk(43.6%, 0%, 70.7%, 29%)
CIE-LAB	lab(66.62, -46.14, 54.85)
CIE-LCH	lch(66.62, 71.68, 130.07°)
OKLab	oklab(69.68% -0.1284 0.1243)
OKLCH	oklch(69.68% 0.179 135.9)
XYZ	xyz(22.6454, 36.1282, 9.1477)
Luminance	0.3613 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B535 #8435B5

analogous

#A6B535 #66B535 #35B544

triadic

#66B535 #3566B5 #B53566

tetradic

#66B535 #35A6B5 #8435B5 #B54435

square

#66B535 #35A6B5 #8435B5 #B54435

split-complementary

#66B535 #4435B5 #B535A6

monochromatic

#315619 #4B8627 #66B535 #86CE59 #A8DC88

Accessibility & contrast

On white

2.55

#66B535 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.23

#66B535 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B535

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B535	#FFFFFF	#000000	##000000
##66B535	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)

#BBA620

Deuteranopia (green-blind)

#B1A041

Tritanopia (blue-blind)

#63AE9C

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66b535;
/* rgb */ color: rgb(102, 181, 53);
/* oklch */ color: oklch(69.7% 0.179 135.9);

Tailwind

colors: {
  custom: {
    50: '#98cc74',
    500: '#66b535',
    950: '#000000',
  },
}

SCSS

$custom: #66b535;
$custom-light: #98cc74;
$custom-dark: #000000;

JSON

{
  "hex": "#66b535",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 53
  },
  "hsl": {
    "h": 97.031,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.69677,
    "c": 0.17867,
    "h": 135.9
  },
  "luminance": 0.3613
}

Semantic roles & 50–950 ramp

primary

#66B535

secondary

#AB80C6

accent

#4ADEA5

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #66B535

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

Preview Lab → · Contrast checker → · Palette generator →