#66B136#66B136

#66B136 is a light, vivid yellow-green. Relative luminance 0.345; OKLCH L 68.7% C 0.173 H 135.6°. Best body text is #000000 at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#66B136
RGB	rgb(102, 177, 54)
HSL	hsl(97, 53%, 45%)
HSV	hsv(97, 69%, 69%)
CMYK	cmyk(42.4%, 0%, 69.5%, 30.6%)
CIE-LAB	lab(65.38, -44.42, 53.19)
CIE-LCH	lch(65.38, 69.30, 129.87°)
OKLab	oklab(68.67% -0.1236 0.1209)
OKLCH	oklch(68.67% 0.173 135.6)
XYZ	xyz(21.8670, 34.5342, 9.0029)
Luminance	0.3453 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B136 #8136B1

analogous

#A4B136 #66B136 #36B143

triadic

#66B136 #3666B1 #B13666

tetradic

#66B136 #36A4B1 #8136B1 #B14336

square

#66B136 #36A4B1 #8136B1 #B14336

split-complementary

#66B136 #4336B1 #B136A4

monochromatic

#305319 #4B8228 #66B136 #85CC58 #A8DA87

Accessibility & contrast

On white

2.66

#66B136 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.91

#66B136 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B136

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B136	#FFFFFF	#000000	##000000
##66B136	1.00	2.66	7.91	7.91
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.91	21.00	1.00	1.00
##000000	7.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A323

Deuteranopia (green-blind)

#AD9C41

Tritanopia (blue-blind)

#64AA98

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66b136;
/* rgb */ color: rgb(102, 177, 54);
/* oklch */ color: oklch(68.7% 0.173 135.6);

Tailwind

colors: {
  custom: {
    50: '#97c974',
    500: '#66b136',
    950: '#000000',
  },
}

SCSS

$custom: #66b136;
$custom-light: #97c974;
$custom-dark: #000000;

JSON

{
  "hex": "#66b136",
  "rgb": {
    "r": 102,
    "g": 177,
    "b": 54
  },
  "hsl": {
    "h": 96.585,
    "s": 53.247,
    "l": 45.294
  },
  "oklch": {
    "l": 0.68668,
    "c": 0.17295,
    "h": 135.6
  },
  "luminance": 0.34535
}

Semantic roles & 50–950 ramp

primary

#66B136

secondary

#A97FC4

accent

#4BDDA4

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1309

muted

#7E827B

Preview Lab

Preview with #66B136

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

Preview Lab → · Contrast checker → · Palette generator →