#66B023#66B023

#66B023 is a light, vivid yellow-green. Relative luminance 0.340; OKLCH L 68.3% C 0.183 H 134.1°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#66B023
RGB	rgb(102, 176, 35)
HSL	hsl(91, 67%, 41%)
HSV	hsv(91, 80%, 69%)
CMYK	cmyk(42%, 0%, 80.1%, 31%)
CIE-LAB	lab(64.96, -45.22, 59.35)
CIE-LCH	lch(64.96, 74.62, 127.30°)
OKLab	oklab(68.28% -0.1271 0.1311)
OKLCH	oklch(68.28% 0.183 134.1)
XYZ	xyz(21.3078, 33.9956, 7.0289)
Luminance	0.3400 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B023 #6D23B0

analogous

#ADB023 #66B023 #23B026

triadic

#66B023 #2366B0 #B02366

tetradic

#66B023 #23ADB0 #6D23B0 #B02623

square

#66B023 #23ADB0 #6D23B0 #B02623

split-complementary

#66B023 #2623B0 #B023AD

monochromatic

#2B4A0F #487D19 #66B023 #84D839 #A4E26C

Accessibility & contrast

On white

2.69

#66B023 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#66B023 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B023

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B023	#FFFFFF	#000000	##000000
##66B023	1.00	2.69	7.80	7.80
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.80	21.00	1.00	1.00
##000000	7.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A100

Deuteranopia (green-blind)

#AD9B33

Tritanopia (blue-blind)

#65A996

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #66b023;
/* rgb */ color: rgb(102, 176, 35);
/* oklch */ color: oklch(68.3% 0.183 134.1);

Tailwind

colors: {
  custom: {
    50: '#98c86b',
    500: '#66b023',
    950: '#000000',
  },
}

SCSS

$custom: #66b023;
$custom-light: #98c86b;
$custom-dark: #000000;

JSON

{
  "hex": "#66b023",
  "rgb": {
    "r": 102,
    "g": 176,
    "b": 35
  },
  "hsl": {
    "h": 91.489,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.68283,
    "c": 0.18257,
    "h": 134.1
  },
  "luminance": 0.33997
}

Semantic roles & 50–950 ramp

primary

#66B023

secondary

#9A67C8

accent

#3EEA98

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66B023

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

Preview Lab → · Contrast checker → · Palette generator →