#ECFF64#ECFF64

#ECFF64 is a very light, vivid yellow. Relative luminance 0.903; OKLCH L 95.7% C 0.177 H 115.7°. Best body text is #000000 at 19.05:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF64
RGB	rgb(236, 255, 100)
HSL	hsl(67, 100%, 70%)
HSV	hsv(67, 61%, 100%)
CMYK	cmyk(7.5%, 0%, 60.8%, 0%)
CIE-LAB	lab(96.11, -26.07, 69.77)
CIE-LCH	lch(96.11, 74.48, 110.48°)
OKLab	oklab(95.75% -0.0769 0.1596)
OKLCH	oklch(95.75% 0.177 115.7)
XYZ	xyz(72.6539, 90.2740, 25.6514)
Luminance	0.9027 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF64 #7764FF

analogous

#FFC564 #ECFF64 #9FFF64

triadic

#ECFF64 #64ECFF #FF64EC

tetradic

#ECFF64 #64FFC5 #7764FF #FF649F

square

#ECFF64 #64FFC5 #7764FF #FF649F

split-complementary

#ECFF64 #649FFF #C564FF

monochromatic

#CCE900 #E4FF27 #ECFF64 #F4FFA1 #FBFFDE

Accessibility & contrast

On white

1.10

#ECFF64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.05

#ECFF64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF64

19.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF64	#FFFFFF	#000000	##000000
##ECFF64	1.00	1.10	19.05	19.05
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.05	21.00	1.00	1.00
##000000	19.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF351

Deuteranopia (green-blind)

#FFF56E

Tritanopia (blue-blind)

#FAF2DE

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecff64;
/* rgb */ color: rgb(236, 255, 100);
/* oklch */ color: oklch(95.7% 0.177 115.7);

Tailwind

colors: {
  custom: {
    50: '#f5ff96',
    500: '#ecff64',
    950: '#000000',
  },
}

SCSS

$custom: #ecff64;
$custom-light: #f5ff96;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff64",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 100
  },
  "hsl": {
    "h": 67.355,
    "s": 100,
    "l": 69.608
  },
  "oklch": {
    "l": 0.95748,
    "c": 0.17714,
    "h": 115.7
  },
  "luminance": 0.90273
}

Semantic roles & 50–950 ramp

primary

#ECFF64

secondary

#422DDA

accent

#00E61C

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFF64

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

Preview Lab → · Contrast checker → · Palette generator →