#66A529#66A529

#66A529 is a light, vivid yellow-green. Relative luminance 0.299; OKLCH L 65.5% C 0.166 H 133.1°. Best body text is #000000 at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#66A529
RGB	rgb(102, 165, 41)
HSL	hsl(90, 60%, 40%)
HSV	hsv(90, 75%, 65%)
CMYK	cmyk(38.2%, 0%, 75.2%, 35.3%)
CIE-LAB	lab(61.56, -40.26, 54.19)
CIE-LCH	lch(61.56, 67.51, 126.61°)
OKLab	oklab(65.51% -0.1133 0.1212)
OKLCH	oklch(65.51% 0.166 133.1)
XYZ	xyz(19.3346, 29.8943, 6.8488)
Luminance	0.2989 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A529 #6829A5

analogous

#A4A529 #66A529 #29A52A

triadic

#66A529 #2966A5 #A52966

tetradic

#66A529 #29A4A5 #6829A5 #A52A29

square

#66A529 #29A4A5 #6829A5 #A52A29

split-complementary

#66A529 #2A29A5 #A529A4

monochromatic

#294311 #48741D #66A529 #84CF3D #A3DB6E

Accessibility & contrast

On white

3.01

#66A529 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.98

#66A529 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A529

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A529	#FFFFFF	#000000	##000000
##66A529	1.00	3.01	6.98	6.98
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.98	21.00	1.00	1.00
##000000	6.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AC980F

Deuteranopia (green-blind)

#A39335

Tritanopia (blue-blind)

#669E8D

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #66a529;
/* rgb */ color: rgb(102, 165, 41);
/* oklch */ color: oklch(65.5% 0.166 133.1);

Tailwind

colors: {
  custom: {
    50: '#97c06c',
    500: '#66a529',
    950: '#000000',
  },
}

SCSS

$custom: #66a529;
$custom-light: #97c06c;
$custom-dark: #000000;

JSON

{
  "hex": "#66a529",
  "rgb": {
    "r": 102,
    "g": 165,
    "b": 41
  },
  "hsl": {
    "h": 90.484,
    "s": 60.194,
    "l": 40.392
  },
  "oklch": {
    "l": 0.65513,
    "c": 0.1659,
    "h": 133.1
  },
  "luminance": 0.29895
}

Semantic roles & 50–950 ramp

primary

#66A529

secondary

#9668C2

accent

#44E395

background

#F9FBF6

surface

#F2F7EC

border

#CCD0C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A529

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

Preview Lab → · Contrast checker → · Palette generator →