#66AA23#66AA23

#66AA23 is a light, vivid yellow-green. Relative luminance 0.317; OKLCH L 66.8% C 0.175 H 133.4°. Best body text is #000000 at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#66AA23
RGB	rgb(102, 170, 35)
HSL	hsl(90, 66%, 40%)
HSV	hsv(90, 79%, 67%)
CMYK	cmyk(40%, 0%, 79.4%, 33.3%)
CIE-LAB	lab(63.09, -42.73, 57.62)
CIE-LCH	lch(63.09, 71.73, 126.56°)
OKLab	oklab(66.75% -0.1204 0.1274)
OKLCH	oklch(66.75% 0.175 133.4)
XYZ	xyz(20.1573, 31.6946, 6.6454)
Luminance	0.3170 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AA23 #6723AA

analogous

#AAAA23 #66AA23 #23AA23

triadic

#66AA23 #2366AA #AA2366

tetradic

#66AA23 #23AAAA #6723AA #AA2323

square

#66AA23 #23AAAA #6723AA #AA2323

split-complementary

#66AA23 #2323AA #AA23AA

monochromatic

#29440E #487719 #66AA23 #85D535 #A3E068

Accessibility & contrast

On white

2.86

#66AA23 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.34

#66AA23 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA23

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AA23	#FFFFFF	#000000	##000000
##66AA23	1.00	2.86	7.34	7.34
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.34	21.00	1.00	1.00
##000000	7.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B19C00

Deuteranopia (green-blind)

#A89732

Tritanopia (blue-blind)

#66A391

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #66aa23;
/* rgb */ color: rgb(102, 170, 35);
/* oklch */ color: oklch(66.8% 0.175 133.4);

Tailwind

colors: {
  custom: {
    50: '#98c46a',
    500: '#66aa23',
    950: '#000000',
  },
}

SCSS

$custom: #66aa23;
$custom-light: #98c46a;
$custom-dark: #000000;

JSON

{
  "hex": "#66aa23",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 35
  },
  "hsl": {
    "h": 90.222,
    "s": 65.854,
    "l": 40.196
  },
  "oklch": {
    "l": 0.66752,
    "c": 0.17531,
    "h": 133.4
  },
  "luminance": 0.31696
}

Semantic roles & 50–950 ramp

primary

#66AA23

secondary

#9563C6

accent

#3FE995

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66AA23

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

Preview Lab → · Contrast checker → · Palette generator →