#ECF66C#ECF66C

#ECF66C is a very light, vivid yellow. Relative luminance 0.848; OKLCH L 93.9% C 0.161 H 112.9°. Best body text is #000000 at 17.97:1 contrast (WCAG AA passes).

Color values

HEX	#ECF66C
RGB	rgb(236, 246, 108)
HSL	hsl(64, 88%, 69%)
HSV	hsv(64, 56%, 96%)
CMYK	cmyk(4.1%, 0%, 56.1%, 3.5%)
CIE-LAB	lab(93.81, -21.23, 63.90)
CIE-LCH	lch(93.81, 67.33, 108.38°)
OKLab	oklab(93.93% -0.0625 0.148)
OKLCH	oklch(93.93% 0.161 112.9)
XYZ	xyz(70.2562, 84.8284, 26.8570)
Luminance	0.8483 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF66C #766CF6

analogous

#F6BB6C #ECF66C #A7F66C

triadic

#ECF66C #6CECF6 #F66CEC

tetradic

#ECF66C #6CF6BB #766CF6 #F66CA7

square

#ECF66C #6CF6BB #766CF6 #F66CA7

split-complementary

#ECF66C #6CA7F6 #BB6CF6

monochromatic

#CBDA0D #E5F232 #ECF66C #F3FAA6 #FBFDDF

Accessibility & contrast

On white

1.17

#ECF66C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.97

#ECF66C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF66C

17.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF66C	#FFFFFF	#000000	##000000
##ECF66C	1.00	1.17	17.97	17.97
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.97	21.00	1.00	1.00
##000000	17.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC5D

Deuteranopia (green-blind)

#FFEF74

Tritanopia (blue-blind)

#FAE9D8

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf66c;
/* rgb */ color: rgb(236, 246, 108);
/* oklch */ color: oklch(93.9% 0.161 112.9);

Tailwind

colors: {
  custom: {
    50: '#f5f99b',
    500: '#ecf66c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf66c;
$custom-light: #f5f99b;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf66c",
  "rgb": {
    "r": 236,
    "g": 246,
    "b": 108
  },
  "hsl": {
    "h": 64.348,
    "s": 88.462,
    "l": 69.412
  },
  "oklch": {
    "l": 0.93928,
    "c": 0.16069,
    "h": 112.9
  },
  "luminance": 0.84827
}

Semantic roles & 50–950 ramp

primary

#ECF66C

secondary

#4136D0

accent

#00E511

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF66C

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

Preview Lab → · Contrast checker → · Palette generator →