#66A423#66A423

#66A423 is a light, vivid yellow-green. Relative luminance 0.295; OKLCH L 65.2% C 0.168 H 132.5°. Best body text is #000000 at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#66A423
RGB	rgb(102, 164, 35)
HSL	hsl(89, 65%, 39%)
HSV	hsv(89, 79%, 64%)
CMYK	cmyk(37.8%, 0%, 78.7%, 35.7%)
CIE-LAB	lab(61.22, -40.18, 55.86)
CIE-LCH	lch(61.22, 68.81, 125.73°)
OKLab	oklab(65.22% -0.1135 0.1238)
OKLCH	oklch(65.22% 0.168 132.5)
XYZ	xyz(19.0581, 29.4962, 6.2790)
Luminance	0.2950 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A423 #6123A4

analogous

#A4A223 #66A423 #26A423

triadic

#66A423 #2366A4 #A42366

tetradic

#66A423 #23A4A2 #6123A4 #A42326

square

#66A423 #23A4A2 #6123A4 #A42326

split-complementary

#66A423 #2326A4 #A223A4

monochromatic

#273F0D #477218 #66A423 #85D331 #A3DE64

Accessibility & contrast

On white

3.04

#66A423 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.90

#66A423 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A423

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A423	#FFFFFF	#000000	##000000
##66A423	1.00	3.04	6.90	6.90
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.90	21.00	1.00	1.00
##000000	6.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AB9700

Deuteranopia (green-blind)

#A39231

Tritanopia (blue-blind)

#679D8C

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #66a423;
/* rgb */ color: rgb(102, 164, 35);
/* oklch */ color: oklch(65.2% 0.168 132.5);

Tailwind

colors: {
  custom: {
    50: '#97bf69',
    500: '#66a423',
    950: '#000000',
  },
}

SCSS

$custom: #66a423;
$custom-light: #97bf69;
$custom-dark: #000000;

JSON

{
  "hex": "#66a423",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 35
  },
  "hsl": {
    "h": 88.837,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.6522,
    "c": 0.16793,
    "h": 132.5
  },
  "luminance": 0.29497
}

Semantic roles & 50–950 ramp

primary

#66A423

secondary

#8F60C3

accent

#40E891

background

#F9FBF6

surface

#F2F7EB

border

#CCD0C6

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A423

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

Preview Lab → · Contrast checker → · Palette generator →