#669C40#669C40

#669C40 is a light, vivid yellow-green. Relative luminance 0.270; OKLCH L 63.4% C 0.137 H 134.2°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#669C40
RGB	rgb(102, 156, 64)
HSL	hsl(95, 42%, 43%)
HSV	hsv(95, 59%, 61%)
CMYK	cmyk(34.6%, 0%, 59%, 38.8%)
CIE-LAB	lab(58.95, -34.37, 41.80)
CIE-LCH	lch(58.95, 54.12, 129.42°)
OKLab	oklab(63.44% -0.0954 0.098)
OKLCH	oklch(63.44% 0.137 134.2)
XYZ	xyz(18.2930, 26.9711, 9.0916)
Luminance	0.2697 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669C40 #76409C

analogous

#949C40 #669C40 #409C48

triadic

#669C40 #40669C #9C4066

tetradic

#669C40 #40949C #76409C #9C4840

square

#669C40 #40949C #76409C #9C4840

split-complementary

#669C40 #48409C #9C4094

monochromatic

#2D451C #4A712E #669C40 #84BC5D #A5CE88

Accessibility & contrast

On white

3.28

#669C40 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#669C40 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #669C40

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669C40	#FFFFFF	#000000	##000000
##669C40	1.00	3.28	6.39	6.39
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A29136

Deuteranopia (green-blind)

#9A8C47

Tritanopia (blue-blind)

#669688

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #669c40;
/* rgb */ color: rgb(102, 156, 64);
/* oklch */ color: oklch(63.4% 0.137 134.2);

Tailwind

colors: {
  custom: {
    50: '#95b978',
    500: '#669c40',
    950: '#000000',
  },
}

SCSS

$custom: #669c40;
$custom-light: #95b978;
$custom-dark: #000000;

JSON

{
  "hex": "#669c40",
  "rgb": {
    "r": 102,
    "g": 156,
    "b": 64
  },
  "hsl": {
    "h": 95.217,
    "s": 41.818,
    "l": 43.137
  },
  "oklch": {
    "l": 0.6344,
    "c": 0.13679,
    "h": 134.2
  },
  "luminance": 0.26972
}

Semantic roles & 50–950 ramp

primary

#669C40

secondary

#A17FB9

accent

#56D29F

background

#F9FBF7

surface

#F2F6ED

border

#CCD0C8

text

#0E1109

muted

#7E807B

Preview Lab

Preview with #669C40

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

Preview Lab → · Contrast checker → · Palette generator →