#ECF66F#ECF66F

#ECF66F is a very light, vivid yellow. Relative luminance 0.849; OKLCH L 94.0% C 0.158 H 112.9°. Best body text is #000000 at 17.98:1 contrast (WCAG AA passes).

Color values

HEX	#ECF66F
RGB	rgb(236, 246, 111)
HSL	hsl(64, 88%, 70%)
HSV	hsv(64, 55%, 96%)
CMYK	cmyk(4.1%, 0%, 54.9%, 3.5%)
CIE-LAB	lab(93.84, -21.00, 62.63)
CIE-LCH	lch(93.84, 66.06, 108.54°)
OKLab	oklab(93.96% -0.0616 0.1456)
OKLCH	oklch(93.96% 0.158 112.9)
XYZ	xyz(70.4186, 84.8934, 27.7124)
Luminance	0.8489 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF66F #796FF6

analogous

#F6BC6F #ECF66F #A9F66F

triadic

#ECF66F #6FECF6 #F66FEC

tetradic

#ECF66F #6FF6BC #796FF6 #F66FA9

square

#ECF66F #6FF6BC #796FF6 #F66FA9

split-complementary

#ECF66F #6FA9F6 #BC6FF6

monochromatic

#CDDD0E #E4F235 #ECF66F #F4FAA9 #FBFDE2

Accessibility & contrast

On white

1.17

#ECF66F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.98

#ECF66F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF66F

17.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF66F	#FFFFFF	#000000	##000000
##ECF66F	1.00	1.17	17.98	17.98
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.98	21.00	1.00	1.00
##000000	17.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC61

Deuteranopia (green-blind)

#FFEF77

Tritanopia (blue-blind)

#FAE9D8

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf66f;
/* rgb */ color: rgb(236, 246, 111);
/* oklch */ color: oklch(94.0% 0.158 112.9);

Tailwind

colors: {
  custom: {
    50: '#f5f99c',
    500: '#ecf66f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf66f;
$custom-light: #f5f99c;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf66f",
  "rgb": {
    "r": 236,
    "g": 246,
    "b": 111
  },
  "hsl": {
    "h": 64.444,
    "s": 88.235,
    "l": 70
  },
  "oklch": {
    "l": 0.9396,
    "c": 0.15814,
    "h": 112.9
  },
  "luminance": 0.84892
}

Semantic roles & 50–950 ramp

primary

#ECF66F

secondary

#4439D0

accent

#01E512

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF66F

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

Preview Lab → · Contrast checker → · Palette generator →