#66A337#66A337

#66A337 is a light, vivid yellow-green. Relative luminance 0.293; OKLCH L 65.1% C 0.154 H 134.1°. Best body text is #000000 at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#66A337
RGB	rgb(102, 163, 55)
HSL	hsl(94, 50%, 43%)
HSV	hsv(94, 66%, 64%)
CMYK	cmyk(37.4%, 0%, 66.3%, 36.1%)
CIE-LAB	lab(61.04, -38.36, 48.19)
CIE-LCH	lch(61.04, 61.59, 128.52°)
OKLab	oklab(65.12% -0.1071 0.1106)
OKLCH	oklch(65.12% 0.154 134.1)
XYZ	xyz(19.2659, 29.2941, 8.2529)
Luminance	0.2929 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A337 #7437A3

analogous

#9CA337 #66A337 #37A33E

triadic

#66A337 #3766A3 #A33766

tetradic

#66A337 #379CA3 #7437A3 #A33E37

square

#66A337 #379CA3 #7437A3 #A33E37

split-complementary

#66A337 #3E37A3 #A3379C

monochromatic

#2D4718 #497528 #66A337 #84C552 #A5D480

Accessibility & contrast

On white

3.06

#66A337 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.86

#66A337 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A337

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A337	#FFFFFF	#000000	##000000
##66A337	1.00	3.06	6.86	6.86
#FFFFFF	3.06	1.00	21.00	21.00
#000000	6.86	21.00	1.00	1.00
##000000	6.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A99629

Deuteranopia (green-blind)

#A19240

Tritanopia (blue-blind)

#669D8D

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #66a337;
/* rgb */ color: rgb(102, 163, 55);
/* oklch */ color: oklch(65.1% 0.154 134.1);

Tailwind

colors: {
  custom: {
    50: '#96be73',
    500: '#66a337',
    950: '#000000',
  },
}

SCSS

$custom: #66a337;
$custom-light: #96be73;
$custom-dark: #000000;

JSON

{
  "hex": "#66a337",
  "rgb": {
    "r": 102,
    "g": 163,
    "b": 55
  },
  "hsl": {
    "h": 93.889,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.65119,
    "c": 0.15391,
    "h": 134.1
  },
  "luminance": 0.29295
}

Semantic roles & 50–950 ramp

primary

#66A337

secondary

#9F78BE

accent

#4FD99D

background

#F9FBF7

surface

#F2F7ED

border

#CCD0C8

text

#0E1208

muted

#7E817B

Preview Lab

Preview with #66A337

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

Preview Lab → · Contrast checker → · Palette generator →