#C9FF66#C9FF66

#C9FF66 is a very light, vivid yellow-green. Relative luminance 0.849; OKLCH L 93.3% C 0.189 H 126.3°. Best body text is #000000 at 17.98:1 contrast (WCAG AA passes).

Color values

HEX	#C9FF66
RGB	rgb(201, 255, 102)
HSL	hsl(81, 100%, 70%)
HSV	hsv(81, 60%, 100%)
CMYK	cmyk(21.2%, 0%, 60%, 0%)
CIE-LAB	lab(93.84, -39.24, 65.82)
CIE-LCH	lch(93.84, 76.62, 120.80°)
OKLab	oklab(93.35% -0.1115 0.152)
OKLCH	oklch(93.35% 0.189 126.3)
XYZ	xyz(62.2457, 84.8960, 25.6750)
Luminance	0.8490 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C9FF66 #9C66FF

analogous

#FFE866 #C9FF66 #7DFF66

triadic

#C9FF66 #66C9FF #FF66C9

tetradic

#C9FF66 #66FFE8 #9C66FF #FF667D

square

#C9FF66 #66FFE8 #9C66FF #FF667D

split-complementary

#C9FF66 #667DFF #E866FF

monochromatic

#98EB00 #B3FF29 #C9FF66 #DFFFA3 #F4FFE0

Accessibility & contrast

On white

1.17

#C9FF66 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.98

#C9FF66 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C9FF66

17.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C9FF66	#FFFFFF	#000000	##000000
##C9FF66	1.00	1.17	17.98	17.98
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.98	21.00	1.00	1.00
##000000	17.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF54

Deuteranopia (green-blind)

#FFEC71

Tritanopia (blue-blind)

#D0F4DF

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #c9ff66;
/* rgb */ color: rgb(201, 255, 102);
/* oklch */ color: oklch(93.3% 0.189 126.3);

Tailwind

colors: {
  custom: {
    50: '#ddff97',
    500: '#c9ff66',
    950: '#000000',
  },
}

SCSS

$custom: #c9ff66;
$custom-light: #ddff97;
$custom-dark: #000000;

JSON

{
  "hex": "#c9ff66",
  "rgb": {
    "r": 201,
    "g": 255,
    "b": 102
  },
  "hsl": {
    "h": 81.176,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.93345,
    "c": 0.18851,
    "h": 126.3
  },
  "luminance": 0.84897
}

Semantic roles & 50–950 ramp

primary

#C9FF66

secondary

#6B2FDA

accent

#00E651

background

#FEFFFC

surface

#FCFFF5

border

#D5D7CF

text

#15180E

muted

#84867F

Preview Lab

Preview with #C9FF66

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

Preview Lab → · Contrast checker → · Palette generator →