#EFFFC9#EFFFC9

#EFFFC9 is a very light, moderate yellow-green. Relative luminance 0.941; OKLCH L 97.5% C 0.072 H 121.1°. Best body text is #000000 at 19.82:1 contrast (WCAG AA passes).

Color values

HEX	#EFFFC9
RGB	rgb(239, 255, 201)
HSL	hsl(78, 100%, 89%)
HSV	hsv(78, 21%, 100%)
CMYK	cmyk(6.3%, 0%, 21.2%, 0%)
CIE-LAB	lab(97.67, -14.16, 24.11)
CIE-LCH	lch(97.67, 27.96, 120.42°)
OKLab	oklab(97.48% -0.0372 0.0615)
OKLCH	oklch(97.48% 0.072 121.1)
XYZ	xyz(81.8980, 94.0878, 69.0932)
Luminance	0.9409 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFFC9 #D9C9FF

analogous

#FFF4C9 #EFFFC9 #D4FFC9

triadic

#EFFFC9 #C9EFFF #FFC9EF

tetradic

#EFFFC9 #C9FFF4 #D9C9FF #FFC9D4

square

#EFFFC9 #C9FFF4 #D9C9FF #FFC9D4

split-complementary

#EFFFC9 #C9D4FF #F4C9FF

monochromatic

#CBFF4F #DDFF8C #EFFFC9 #F6FFE0 #F6FFE0

Accessibility & contrast

On white

1.06

#EFFFC9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.82

#EFFFC9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFFC9

19.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFFC9	#FFFFFF	#000000	##000000
##EFFFC9	1.00	1.06	19.82	19.82
#FFFFFF	1.06	1.00	21.00	21.00
#000000	19.82	21.00	1.00	1.00
##000000	19.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF9C6

Deuteranopia (green-blind)

#FFF8CB

Tritanopia (blue-blind)

#F4F9F0

Achromatopsia (no color)

#F8F8F8

Design tokens & code

CSS

--color: #efffc9;
/* rgb */ color: rgb(239, 255, 201);
/* oklch */ color: oklch(97.5% 0.072 121.1);

Tailwind

colors: {
  custom: {
    50: '#f4ffd9',
    500: '#efffc9',
    950: '#000000',
  },
}

SCSS

$custom: #efffc9;
$custom-light: #f4ffd9;
$custom-dark: #000000;

JSON

{
  "hex": "#efffc9",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 201
  },
  "hsl": {
    "h": 77.778,
    "s": 100,
    "l": 89.412
  },
  "oklch": {
    "l": 0.97482,
    "c": 0.07186,
    "h": 121.1
  },
  "luminance": 0.94088
}

Semantic roles & 50–950 ramp

primary

#EFFFC9

secondary

#A183E9

accent

#00E644

background

#FFFFFE

surface

#FEFFFB

border

#D6D7D4

text

#171814

muted

#858683

Preview Lab

Preview with #EFFFC9

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

Preview Lab → · Contrast checker → · Palette generator →