#ECFF66#ECFF66

#ECFF66 is a very light, vivid yellow. Relative luminance 0.903; OKLCH L 95.8% C 0.176 H 115.8°. Best body text is #000000 at 19.06:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF66
RGB	rgb(236, 255, 102)
HSL	hsl(67, 100%, 70%)
HSV	hsv(67, 60%, 100%)
CMYK	cmyk(7.5%, 0%, 60%, 0%)
CIE-LAB	lab(96.13, -25.93, 68.98)
CIE-LCH	lch(96.13, 73.69, 110.60°)
OKLab	oklab(95.77% -0.0764 0.1581)
OKLCH	oklch(95.77% 0.176 115.8)
XYZ	xyz(72.7519, 90.3132, 26.1675)
Luminance	0.9031 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF66 #7966FF

analogous

#FFC666 #ECFF66 #9FFF66

triadic

#ECFF66 #66ECFF #FF66EC

tetradic

#ECFF66 #66FFC6 #7966FF #FF669F

square

#ECFF66 #66FFC6 #7966FF #FF669F

split-complementary

#ECFF66 #669FFF #C666FF

monochromatic

#CDEB00 #E4FF29 #ECFF66 #F4FFA3 #FBFFE0

Accessibility & contrast

On white

1.10

#ECFF66 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.06

#ECFF66 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF66

19.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF66	#FFFFFF	#000000	##000000
##ECFF66	1.00	1.10	19.06	19.06
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.06	21.00	1.00	1.00
##000000	19.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF354

Deuteranopia (green-blind)

#FFF570

Tritanopia (blue-blind)

#FAF2DF

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecff66;
/* rgb */ color: rgb(236, 255, 102);
/* oklch */ color: oklch(95.8% 0.176 115.8);

Tailwind

colors: {
  custom: {
    50: '#f5ff97',
    500: '#ecff66',
    950: '#000000',
  },
}

SCSS

$custom: #ecff66;
$custom-light: #f5ff97;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff66",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 102
  },
  "hsl": {
    "h": 67.451,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.95767,
    "c": 0.17559,
    "h": 115.8
  },
  "luminance": 0.90312
}

Semantic roles & 50–950 ramp

primary

#ECFF66

secondary

#442FDA

accent

#00E61D

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFF66

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

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