#66E73B#66E73B

#66E73B is a very light, highly saturated green. Relative luminance 0.603; OKLCH L 82.3% C 0.234 H 139.3°. Best body text is #000000 at 13.06:1 contrast (WCAG AA passes).

Color values

HEX	#66E73B
RGB	rgb(102, 231, 59)
HSL	hsl(105, 78%, 57%)
HSV	hsv(105, 74%, 91%)
CMYK	cmyk(55.8%, 0%, 74.5%, 9.4%)
CIE-LAB	lab(82.00, -64.55, 68.16)
CIE-LCH	lch(82.00, 93.87, 133.44°)
OKLab	oklab(82.34% -0.1777 0.1529)
OKLCH	oklch(82.34% 0.234 139.3)
XYZ	xyz(34.8434, 60.2894, 13.9377)
Luminance	0.6029 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E73B #BC3BE7

analogous

#BCE73B #66E73B #3BE766

triadic

#66E73B #3B66E7 #E73B66

tetradic

#66E73B #3BBCE7 #BC3BE7 #E7663B

square

#66E73B #3BBCE7 #BC3BE7 #E7663B

split-complementary

#66E73B #663BE7 #E73BBC

monochromatic

#339512 #46CC19 #66E73B #91EE72 #BBF4A8

Accessibility & contrast

On white

1.61

#66E73B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.06

#66E73B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E73B

13.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E73B	#FFFFFF	#000000	##000000
##66E73B	1.00	1.61	13.06	13.06
#FFFFFF	1.61	1.00	21.00	21.00
#000000	13.06	21.00	1.00	1.00
##000000	13.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EED214

Deuteranopia (green-blind)

#DDC84D

Tritanopia (blue-blind)

#58DFC6

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #66e73b;
/* rgb */ color: rgb(102, 231, 59);
/* oklch */ color: oklch(82.3% 0.234 139.3);

Tailwind

colors: {
  custom: {
    50: '#9ef07c',
    500: '#66e73b',
    950: '#000000',
  },
}

SCSS

$custom: #66e73b;
$custom-light: #9ef07c;
$custom-dark: #000000;

JSON

{
  "hex": "#66e73b",
  "rgb": {
    "r": 102,
    "g": 231,
    "b": 59
  },
  "hsl": {
    "h": 105,
    "s": 78.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.82343,
    "c": 0.23442,
    "h": 139.3
  },
  "luminance": 0.60292
}

Semantic roles & 50–950 ramp

primary

#66E73B

secondary

#7E2D99

accent

#33F5C4

background

#FDFFFB

surface

#F7FEF2

border

#D0D6CC

text

#10170A

muted

#81857D

Preview Lab

Preview with #66E73B

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

Preview Lab → · Contrast checker → · Palette generator →