#C5EF66#C5EF66

#C5EF66 is a very light, vivid yellow-green. Relative luminance 0.746; OKLCH L 89.5% C 0.170 H 124.1°. Best body text is #000000 at 15.91:1 contrast (WCAG AA passes).

Color values

HEX	#C5EF66
RGB	rgb(197, 239, 102)
HSL	hsl(78, 81%, 67%)
HSV	hsv(78, 57%, 94%)
CMYK	cmyk(17.6%, 0%, 57.3%, 6.3%)
CIE-LAB	lab(89.19, -33.50, 60.55)
CIE-LCH	lch(89.19, 69.20, 118.95°)
OKLab	oklab(89.53% -0.0953 0.1409)
OKLCH	oklch(89.53% 0.17 124.1)
XYZ	xyz(56.2910, 74.5622, 23.9942)
Luminance	0.7456 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C5EF66 #9066EF

analogous

#EFD466 #C5EF66 #81EF66

triadic

#C5EF66 #66C5EF #EF66C5

tetradic

#C5EF66 #66EFD4 #9066EF #EF6681

square

#C5EF66 #66EFD4 #9066EF #EF6681

split-complementary

#C5EF66 #6681EF #D466EF

monochromatic

#90C615 #B0E92F #C5EF66 #DAF59D #EFFBD5

Accessibility & contrast

On white

1.32

#C5EF66 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.91

#C5EF66 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C5EF66

15.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C5EF66	#FFFFFF	#000000	##000000
##C5EF66	1.00	1.32	15.91	15.91
#FFFFFF	1.32	1.00	21.00	21.00
#000000	15.91	21.00	1.00	1.00
##000000	15.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FBE157

Deuteranopia (green-blind)

#F6E06F

Tritanopia (blue-blind)

#CDE4D1

Achromatopsia (no color)

#E0E0E0

Design tokens & code

CSS

--color: #c5ef66;
/* rgb */ color: rgb(197, 239, 102);
/* oklch */ color: oklch(89.5% 0.170 124.1);

Tailwind

colors: {
  custom: {
    50: '#d9f496',
    500: '#c5ef66',
    950: '#000000',
  },
}

SCSS

$custom: #c5ef66;
$custom-light: #d9f496;
$custom-dark: #000000;

JSON

{
  "hex": "#c5ef66",
  "rgb": {
    "r": 197,
    "g": 239,
    "b": 102
  },
  "hsl": {
    "h": 78.394,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.89527,
    "c": 0.1701,
    "h": 124.1
  },
  "luminance": 0.74563
}

Semantic roles & 50–950 ramp

primary

#C5EF66

secondary

#6136C3

accent

#08DD49

background

#FEFFFC

surface

#FCFEF5

border

#D5D6CF

text

#15170E

muted

#84857F

Preview Lab

Preview with #C5EF66

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

Preview Lab → · Contrast checker → · Palette generator →