#66B433#66B433

#66B433 is a light, vivid yellow-green. Relative luminance 0.357; OKLCH L 69.4% C 0.179 H 135.7°. Best body text is #000000 at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#66B433
RGB	rgb(102, 180, 51)
HSL	hsl(96, 56%, 45%)
HSV	hsv(96, 72%, 71%)
CMYK	cmyk(43.3%, 0%, 71.7%, 29.4%)
CIE-LAB	lab(66.29, -45.88, 55.27)
CIE-LCH	lch(66.29, 71.84, 129.69°)
OKLab	oklab(69.41% -0.1278 0.1249)
OKLCH	oklch(69.41% 0.179 135.7)
XYZ	xyz(22.3977, 35.7050, 8.8429)
Luminance	0.3571 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B433 #8133B4

analogous

#A6B433 #66B433 #33B440

triadic

#66B433 #3366B4 #B43366

tetradic

#66B433 #33A6B4 #8133B4 #B44033

square

#66B433 #33A6B4 #8133B4 #B44033

split-complementary

#66B433 #4033B4 #B433A6

monochromatic

#305518 #4B8425 #66B433 #85CF55 #A8DC85

Accessibility & contrast

On white

2.58

#66B433 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.14

#66B433 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B433

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B433	#FFFFFF	#000000	##000000
##66B433	1.00	2.58	8.14	8.14
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.14	21.00	1.00	1.00
##000000	8.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA51D

Deuteranopia (green-blind)

#B09F3F

Tritanopia (blue-blind)

#63AD9B

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66b433;
/* rgb */ color: rgb(102, 180, 51);
/* oklch */ color: oklch(69.4% 0.179 135.7);

Tailwind

colors: {
  custom: {
    50: '#98cb73',
    500: '#66b433',
    950: '#000000',
  },
}

SCSS

$custom: #66b433;
$custom-light: #98cb73;
$custom-dark: #000000;

JSON

{
  "hex": "#66b433",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 51
  },
  "hsl": {
    "h": 96.279,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.69407,
    "c": 0.1787,
    "h": 135.7
  },
  "luminance": 0.35706
}

Semantic roles & 50–950 ramp

primary

#66B433

secondary

#A97DC6

accent

#49DFA4

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B433

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

Preview Lab → · Contrast checker → · Palette generator →