#ECFF47#ECFF47

#ECFF47 is a very light, vivid yellow. Relative luminance 0.898; OKLCH L 95.5% C 0.196 H 115.4°. Best body text is #000000 at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF47
RGB	rgb(236, 255, 71)
HSL	hsl(66, 100%, 64%)
HSV	hsv(66, 72%, 100%)
CMYK	cmyk(7.5%, 0%, 72.2%, 0%)
CIE-LAB	lab(95.92, -27.69, 80.17)
CIE-LCH	lch(95.92, 84.82, 109.05°)
OKLab	oklab(95.53% -0.0841 0.1772)
OKLCH	oklch(95.53% 0.196 115.4)
XYZ	xyz(71.4913, 89.8090, 19.5288)
Luminance	0.8981 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF47 #5A47FF

analogous

#FFB647 #ECFF47 #90FF47

triadic

#ECFF47 #47ECFF #FF47EC

tetradic

#ECFF47 #47FFB6 #5A47FF #FF4790

square

#ECFF47 #47FFB6 #5A47FF #FF4790

split-complementary

#ECFF47 #4790FF #B647FF

monochromatic

#B7CC00 #E6FF0A #ECFF47 #F2FF84 #F9FFC1

Accessibility & contrast

On white

1.11

#ECFF47 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.96

#ECFF47 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF47

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF47	#FFFFFF	#000000	##000000
##ECFF47	1.00	1.11	18.96	18.96
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.96	21.00	1.00	1.00
##000000	18.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF221

Deuteranopia (green-blind)

#FFF556

Tritanopia (blue-blind)

#FBF0DC

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #ecff47;
/* rgb */ color: rgb(236, 255, 71);
/* oklch */ color: oklch(95.5% 0.196 115.4);

Tailwind

colors: {
  custom: {
    50: '#f6ff86',
    500: '#ecff47',
    950: '#000000',
  },
}

SCSS

$custom: #ecff47;
$custom-light: #f6ff86;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff47",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 71
  },
  "hsl": {
    "h": 66.196,
    "s": 100,
    "l": 63.922
  },
  "oklch": {
    "l": 0.95532,
    "c": 0.19613,
    "h": 115.4
  },
  "luminance": 0.89808
}

Semantic roles & 50–950 ramp

primary

#ECFF47

secondary

#3423C7

accent

#00E618

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170C

muted

#86857F

Preview Lab

Preview with #ECFF47

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

Preview Lab → · Contrast checker → · Palette generator →