#ECFF91#ECFF91

#ECFF91 is a very light, vivid yellow-green. Relative luminance 0.914; OKLCH L 96.3% C 0.136 H 117.1°. Best body text is #000000 at 19.28:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF91
RGB	rgb(236, 255, 145)
HSL	hsl(70, 100%, 78%)
HSV	hsv(70, 43%, 100%)
CMYK	cmyk(7.5%, 0%, 43.1%, 0%)
CIE-LAB	lab(96.57, -22.24, 50.32)
CIE-LCH	lch(96.57, 55.02, 113.85°)
OKLab	oklab(96.27% -0.0621 0.1215)
OKLCH	oklch(96.27% 0.136 117.1)
XYZ	xyz(75.4635, 91.3978, 40.4487)
Luminance	0.9140 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF91 #A491FF

analogous

#FFDB91 #ECFF91 #B5FF91

triadic

#ECFF91 #91ECFF #FF91EC

tetradic

#ECFF91 #91FFDB #A491FF #FF91B5

square

#ECFF91 #91FFDB #A491FF #FF91B5

split-complementary

#ECFF91 #91B5FF #DB91FF

monochromatic

#D7FF17 #E1FF54 #ECFF91 #F7FFCE #FAFFE0

Accessibility & contrast

On white

1.09

#ECFF91 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.28

#ECFF91 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF91

19.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF91	#FFFFFF	#000000	##000000
##ECFF91	1.00	1.09	19.28	19.28
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.28	21.00	1.00	1.00
##000000	19.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF588

Deuteranopia (green-blind)

#FFF697

Tritanopia (blue-blind)

#F6F4E5

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #ecff91;
/* rgb */ color: rgb(236, 255, 145);
/* oklch */ color: oklch(96.3% 0.136 117.1);

Tailwind

colors: {
  custom: {
    50: '#f4ffb3',
    500: '#ecff91',
    950: '#000000',
  },
}

SCSS

$custom: #ecff91;
$custom-light: #f4ffb3;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff91",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 145
  },
  "hsl": {
    "h": 70.364,
    "s": 100,
    "l": 78.431
  },
  "oklch": {
    "l": 0.96269,
    "c": 0.13641,
    "h": 117.1
  },
  "luminance": 0.91397
}

Semantic roles & 50–950 ramp

primary

#ECFF91

secondary

#6C53E1

accent

#00E628

background

#FFFFFD

surface

#FEFFF8

border

#D6D7D1

text

#171811

muted

#858681

Preview Lab

Preview with #ECFF91

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

Preview Lab → · Contrast checker → · Palette generator →