#ECF99C#ECF99C

#ECF99C is a very light, moderate yellow. Relative luminance 0.880; OKLCH L 95.2% C 0.117 H 115.2°. Best body text is #000000 at 18.60:1 contrast (WCAG AA passes).

Color values

HEX	#ECF99C
RGB	rgb(236, 249, 156)
HSL	hsl(68, 89%, 79%)
HSV	hsv(68, 37%, 98%)
CMYK	cmyk(5.2%, 0%, 37.3%, 2.4%)
CIE-LAB	lab(95.15, -18.17, 43.22)
CIE-LCH	lch(95.15, 46.88, 112.80°)
OKLab	oklab(95.19% -0.0497 0.1059)
OKLCH	oklch(95.19% 0.117 115.2)
XYZ	xyz(74.4689, 87.9853, 44.5059)
Luminance	0.8799 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF99C #A99CF9

analogous

#F9D89C #ECF99C #BEF99C

triadic

#ECF99C #9CECF9 #F99CEC

tetradic

#ECF99C #9CF9D8 #A99CF9 #F99CBE

square

#ECF99C #9CF9D8 #A99CF9 #F99CBE

split-complementary

#ECF99C #9CBEF9 #D89CF9

monochromatic

#D6F229 #E1F662 #ECF99C #F7FCD6 #F9FDE2

Accessibility & contrast

On white

1.13

#ECF99C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.60

#ECF99C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF99C

18.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF99C	#FFFFFF	#000000	##000000
##ECF99C	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)

#FFF095

Deuteranopia (green-blind)

#FFF2A0

Tritanopia (blue-blind)

#F6EFE2

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecf99c;
/* rgb */ color: rgb(236, 249, 156);
/* oklch */ color: oklch(95.2% 0.117 115.2);

Tailwind

colors: {
  custom: {
    50: '#f3fbba',
    500: '#ecf99c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf99c;
$custom-light: #f3fbba;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf99c",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 156
  },
  "hsl": {
    "h": 68.387,
    "s": 88.571,
    "l": 79.412
  },
  "oklch": {
    "l": 0.95185,
    "c": 0.11702,
    "h": 115.2
  },
  "luminance": 0.87985
}

Semantic roles & 50–950 ramp

primary

#ECF99C

secondary

#7160DA

accent

#00E520

background

#FFFFFD

surface

#FEFFF8

border

#D6D7D1

text

#171712

muted

#858582

Preview Lab

Preview with #ECF99C

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

Preview Lab → · Contrast checker → · Palette generator →