#CEFF99#CEFF99

#CEFF99 is a very light, vivid yellow-green. Relative luminance 0.869; OKLCH L 94.3% C 0.139 H 129.6°. Best body text is #000000 at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#CEFF99
RGB	rgb(206, 255, 153)
HSL	hsl(89, 100%, 80%)
HSV	hsv(89, 40%, 100%)
CMYK	cmyk(19.2%, 0%, 40%, 0%)
CIE-LAB	lab(94.71, -32.31, 43.71)
CIE-LCH	lch(94.71, 54.36, 126.47°)
OKLab	oklab(94.31% -0.0887 0.1071)
OKLCH	oklch(94.31% 0.139 129.6)
XYZ	xyz(66.9625, 86.9406, 43.3841)
Luminance	0.8694 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Light Yellowish Green

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CEFF99 #CA99FF

analogous

#FFFD99 #CEFF99 #9BFF99

triadic

#CEFF99 #99CEFF #FF99CE

tetradic

#CEFF99 #99FFFD #CA99FF #FF999B

square

#CEFF99 #99FFFD #CA99FF #FF999B

split-complementary

#CEFF99 #999BFF #FD99FF

monochromatic

#93FF1F #B1FF5C #CEFF99 #EBFFD6 #F0FFE0

Accessibility & contrast

On white

1.14

#CEFF99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.39

#CEFF99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #CEFF99

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CEFF99	#FFFFFF	#000000	##000000
##CEFF99	1.00	1.14	18.39	18.39
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.39	21.00	1.00	1.00
##000000	18.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF291

Deuteranopia (green-blind)

#FFEF9E

Tritanopia (blue-blind)

#D2F7E6

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ceff99;
/* rgb */ color: rgb(206, 255, 153);
/* oklch */ color: oklch(94.3% 0.139 129.6);

Tailwind

colors: {
  custom: {
    50: '#deffb8',
    500: '#ceff99',
    950: '#000000',
  },
}

SCSS

$custom: #ceff99;
$custom-light: #deffb8;
$custom-dark: #000000;

JSON

{
  "hex": "#ceff99",
  "rgb": {
    "r": 206,
    "g": 255,
    "b": 153
  },
  "hsl": {
    "h": 88.824,
    "s": 100,
    "l": 80
  },
  "oklch": {
    "l": 0.94314,
    "c": 0.13909,
    "h": 129.6
  },
  "luminance": 0.86942
}

Semantic roles & 50–950 ramp

primary

#CEFF99

secondary

#9B5AE2

accent

#00E66E

background

#FEFFFD

surface

#FCFFF8

border

#D5D7D1

text

#151811

muted

#848681

Preview Lab

Preview with #CEFF99

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

Preview Lab → · Contrast checker → · Palette generator →