#66B534#66B534

#66B534 is a light, vivid yellow-green. Relative luminance 0.361; OKLCH L 69.7% C 0.179 H 135.8°. Best body text is #000000 at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#66B534
RGB	rgb(102, 181, 52)
HSL	hsl(97, 55%, 46%)
HSV	hsv(97, 71%, 71%)
CMYK	cmyk(43.6%, 0%, 71.3%, 29%)
CIE-LAB	lab(66.61, -46.22, 55.22)
CIE-LCH	lch(66.61, 72.01, 129.93°)
OKLab	oklab(69.67% -0.1286 0.1249)
OKLCH	oklch(69.67% 0.179 135.8)
XYZ	xyz(22.6226, 36.1191, 9.0278)
Luminance	0.3612 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B534 #8334B5

analogous

#A6B534 #66B534 #34B542

triadic

#66B534 #3466B5 #B53466

tetradic

#66B534 #34A6B5 #8334B5 #B54234

square

#66B534 #34A6B5 #8334B5 #B54234

split-complementary

#66B534 #4234B5 #B534A6

monochromatic

#305619 #4B8526 #66B534 #86CF57 #A8DC87

Accessibility & contrast

On white

2.55

#66B534 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.22

#66B534 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B534

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B534	#FFFFFF	#000000	##000000
##66B534	1.00	2.55	8.22	8.22
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.22	21.00	1.00	1.00
##000000	8.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA61F

Deuteranopia (green-blind)

#B1A040

Tritanopia (blue-blind)

#63AE9C

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66b534;
/* rgb */ color: rgb(102, 181, 52);
/* oklch */ color: oklch(69.7% 0.179 135.8);

Tailwind

colors: {
  custom: {
    50: '#98cc73',
    500: '#66b534',
    950: '#000000',
  },
}

SCSS

$custom: #66b534;
$custom-light: #98cc73;
$custom-dark: #000000;

JSON

{
  "hex": "#66b534",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 52
  },
  "hsl": {
    "h": 96.744,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.69669,
    "c": 0.17932,
    "h": 135.8
  },
  "luminance": 0.3612
}

Semantic roles & 50–950 ramp

primary

#66B534

secondary

#AA7FC6

accent

#49DFA5

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #66B534

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

Preview Lab → · Contrast checker → · Palette generator →