#66BB23#66BB23

#66BB23 is a light, vivid yellow-green. Relative luminance 0.385; OKLCH L 71.1% C 0.196 H 135.3°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#66BB23
RGB	rgb(102, 187, 35)
HSL	hsl(94, 68%, 44%)
HSV	hsv(94, 81%, 73%)
CMYK	cmyk(45.5%, 0%, 81.3%, 26.7%)
CIE-LAB	lab(68.38, -49.64, 62.50)
CIE-LCH	lch(68.38, 79.81, 128.46°)
OKLab	oklab(71.09% -0.1389 0.1377)
OKLCH	oklch(71.09% 0.196 135.3)
XYZ	xyz(23.5526, 38.4853, 7.7771)
Luminance	0.3849 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BB23 #7823BB

analogous

#B2BB23 #66BB23 #23BB2C

triadic

#66BB23 #2366BB #BB2366

tetradic

#66BB23 #23B2BB #7823BB #BB2C23

square

#66BB23 #23B2BB #7823BB #BB2C23

split-complementary

#66BB23 #2C23BB #BB23B2

monochromatic

#2E5410 #4A8719 #66BB23 #84DB40 #A5E574

Accessibility & contrast

On white

2.41

#66BB23 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#66BB23 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB23

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BB23	#FFFFFF	#000000	##000000
##66BB23	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AB00

Deuteranopia (green-blind)

#B7A435

Tritanopia (blue-blind)

#63B4A0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66bb23;
/* rgb */ color: rgb(102, 187, 35);
/* oklch */ color: oklch(71.1% 0.196 135.3);

Tailwind

colors: {
  custom: {
    50: '#99d06c',
    500: '#66bb23',
    950: '#000000',
  },
}

SCSS

$custom: #66bb23;
$custom-light: #99d06c;
$custom-dark: #000000;

JSON

{
  "hex": "#66bb23",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 35
  },
  "hsl": {
    "h": 93.553,
    "s": 68.468,
    "l": 43.529
  },
  "oklch": {
    "l": 0.71088,
    "c": 0.19561,
    "h": 135.3
  },
  "luminance": 0.38487
}

Semantic roles & 50–950 ramp

primary

#66BB23

secondary

#A26ECC

accent

#3CEB9E

background

#F9FCF6

surface

#F2F9EC

border

#CCD2C7

text

#0F1408

muted

#7E827A

Preview Lab

Preview with #66BB23

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

Preview Lab → · Contrast checker → · Palette generator →