#ECF99D#ECF99D

#ECF99D is a very light, moderate yellow. Relative luminance 0.880; OKLCH L 95.2% C 0.116 H 115.2°. Best body text is #000000 at 18.60:1 contrast (WCAG AA passes).

Color values

HEX	#ECF99D
RGB	rgb(236, 249, 157)
HSL	hsl(68, 88%, 80%)
HSV	hsv(68, 37%, 98%)
CMYK	cmyk(5.2%, 0%, 36.9%, 2.4%)
CIE-LAB	lab(95.17, -18.06, 42.75)
CIE-LCH	lch(95.17, 46.40, 112.90°)
OKLab	oklab(95.2% -0.0494 0.1049)
OKLCH	oklch(95.2% 0.116 115.2)
XYZ	xyz(74.5539, 88.0193, 44.9537)
Luminance	0.8802 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF99D #AA9DF9

analogous

#F9D89D #ECF99D #BEF99D

triadic

#ECF99D #9DECF9 #F99DEC

tetradic

#ECF99D #9DF9D8 #AA9DF9 #F99DBE

square

#ECF99D #9DF9D8 #AA9DF9 #F99DBE

split-complementary

#ECF99D #9DBEF9 #D89DF9

monochromatic

#D6F22A #E1F563 #ECF99D #F7FDD7 #F9FDE2

Accessibility & contrast

On white

1.13

#ECF99D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.60

#ECF99D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF99D

18.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF99D	#FFFFFF	#000000	##000000
##ECF99D	1.00	1.13	18.60	18.60
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.60	21.00	1.00	1.00
##000000	18.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF096

Deuteranopia (green-blind)

#FFF2A1

Tritanopia (blue-blind)

#F6EFE2

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecf99d;
/* rgb */ color: rgb(236, 249, 157);
/* oklch */ color: oklch(95.2% 0.116 115.2);

Tailwind

colors: {
  custom: {
    50: '#f3fbbb',
    500: '#ecf99d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf99d;
$custom-light: #f3fbbb;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf99d",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 157
  },
  "hsl": {
    "h": 68.478,
    "s": 88.462,
    "l": 79.608
  },
  "oklch": {
    "l": 0.95201,
    "c": 0.11591,
    "h": 115.2
  },
  "luminance": 0.88019
}

Semantic roles & 50–950 ramp

primary

#ECF99D

secondary

#7260DA

accent

#00E521

background

#FFFFFD

surface

#FEFFF8

border

#D6D7D1

text

#171712

muted

#858582

Preview Lab

Preview with #ECF99D

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

Preview Lab → · Contrast checker → · Palette generator →