#ECF781#ECF781

#ECF781 is a very light, vivid yellow. Relative luminance 0.859; OKLCH L 94.4% C 0.143 H 113.5°. Best body text is #000000 at 18.19:1 contrast (WCAG AA passes).

Color values

HEX	#ECF781
RGB	rgb(236, 247, 129)
HSL	hsl(66, 88%, 74%)
HSV	hsv(66, 48%, 97%)
CMYK	cmyk(4.5%, 0%, 47.8%, 3.1%)
CIE-LAB	lab(94.29, -19.97, 55.04)
CIE-LCH	lch(94.29, 58.55, 109.94°)
OKLab	oklab(94.38% -0.057 0.1308)
OKLCH	oklch(94.38% 0.143 113.5)
XYZ	xyz(71.8164, 85.9405, 33.5696)
Luminance	0.8594 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF781 #8C81F7

analogous

#F7C781 #ECF781 #B1F781

triadic

#ECF781 #81ECF7 #F781EC

tetradic

#ECF781 #81F7C7 #8C81F7 #F781B1

square

#ECF781 #81F7C7 #8C81F7 #F781B1

split-complementary

#ECF781 #81B1F7 #C781F7

monochromatic

#DAEE0F #E3F347 #ECF781 #F5FBBB #FBFDE2

Accessibility & contrast

On white

1.15

#ECF781 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.19

#ECF781 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF781

18.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF781	#FFFFFF	#000000	##000000
##ECF781	1.00	1.15	18.19	18.19
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.19	21.00	1.00	1.00
##000000	18.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED77

Deuteranopia (green-blind)

#FFF087

Tritanopia (blue-blind)

#F8EBDC

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #ecf781;
/* rgb */ color: rgb(236, 247, 129);
/* oklch */ color: oklch(94.4% 0.143 113.5);

Tailwind

colors: {
  custom: {
    50: '#f4f9a8',
    500: '#ecf781',
    950: '#000000',
  },
}

SCSS

$custom: #ecf781;
$custom-light: #f4f9a8;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf781",
  "rgb": {
    "r": 236,
    "g": 247,
    "b": 129
  },
  "hsl": {
    "h": 65.593,
    "s": 88.06,
    "l": 73.725
  },
  "oklch": {
    "l": 0.9438,
    "c": 0.1427,
    "h": 113.5
  },
  "luminance": 0.85939
}

Semantic roles & 50–950 ramp

primary

#ECF781

secondary

#5549D4

accent

#01E516

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF781

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

Preview Lab → · Contrast checker → · Palette generator →