#EFFFCB#EFFFCB

#EFFFCB is a very light, moderate yellow-green. Relative luminance 0.942; OKLCH L 97.5% C 0.069 H 121.6°. Best body text is #000000 at 19.84:1 contrast (WCAG AA passes).

Color values

HEX	#EFFFCB
RGB	rgb(239, 255, 203)
HSL	hsl(78, 100%, 90%)
HSV	hsv(78, 20%, 100%)
CMYK	cmyk(6.3%, 0%, 20.4%, 0%)
CIE-LAB	lab(97.71, -13.86, 23.15)
CIE-LCH	lch(97.71, 26.98, 120.91°)
OKLab	oklab(97.53% -0.0364 0.0591)
OKLCH	oklch(97.53% 0.069 121.6)
XYZ	xyz(82.1348, 94.1825, 70.3404)
Luminance	0.9418 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFFCB #DBCBFF

analogous

#FFF5CB #EFFFCB #D5FFCB

triadic

#EFFFCB #CBEFFF #FFCBEF

tetradic

#EFFFCB #CBFFF5 #DBCBFF #FFCBD5

square

#EFFFCB #CBFFF5 #DBCBFF #FFCBD5

split-complementary

#EFFFCB #CBD5FF #F5CBFF

monochromatic

#C9FF51 #DCFF8E #EFFFCB #F6FFE0 #F6FFE0

Accessibility & contrast

On white

1.06

#EFFFCB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.84

#EFFFCB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFFCB

19.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFFCB	#FFFFFF	#000000	##000000
##EFFFCB	1.00	1.06	19.84	19.84
#FFFFFF	1.06	1.00	21.00	21.00
#000000	19.84	21.00	1.00	1.00
##000000	19.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF9C8

Deuteranopia (green-blind)

#FFF8CD

Tritanopia (blue-blind)

#F3F9F1

Achromatopsia (no color)

#F8F8F8

Design tokens & code

CSS

--color: #efffcb;
/* rgb */ color: rgb(239, 255, 203);
/* oklch */ color: oklch(97.5% 0.069 121.6);

Tailwind

colors: {
  custom: {
    50: '#f4ffdb',
    500: '#efffcb',
    950: '#000000',
  },
}

SCSS

$custom: #efffcb;
$custom-light: #f4ffdb;
$custom-dark: #000000;

JSON

{
  "hex": "#efffcb",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 203
  },
  "hsl": {
    "h": 78.462,
    "s": 100,
    "l": 89.804
  },
  "oklch": {
    "l": 0.97525,
    "c": 0.06942,
    "h": 121.6
  },
  "luminance": 0.94183
}

Semantic roles & 50–950 ramp

primary

#EFFFCB

secondary

#A485E9

accent

#00E647

background

#FFFFFE

surface

#FEFFFB

border

#D6D7D4

text

#171815

muted

#858684

Preview Lab

Preview with #EFFFCB

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

Preview Lab → · Contrast checker → · Palette generator →