#ECF28A#ECF28A

#ECF28A is a very light, vivid yellow. Relative luminance 0.832; OKLCH L 93.5% C 0.128 H 111.5°. Best body text is #000000 at 17.63:1 contrast (WCAG AA passes).

Color values

HEX	#ECF28A
RGB	rgb(236, 242, 138)
HSL	hsl(63, 80%, 75%)
HSV	hsv(63, 43%, 95%)
CMYK	cmyk(2.5%, 0%, 43%, 5.1%)
CIE-LAB	lab(93.09, -16.69, 49.33)
CIE-LCH	lch(93.09, 52.08, 108.69°)
OKLab	oklab(93.46% -0.0468 0.1188)
OKLCH	oklch(93.46% 0.128 111.5)
XYZ	xyz(70.9327, 83.1733, 36.3572)
Luminance	0.8317 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF28A #908AF2

analogous

#F2C48A #ECF28A #B8F28A

triadic

#ECF28A #8AECF2 #F28AEC

tetradic

#ECF28A #8AF2C4 #908AF2 #F28AB8

square

#ECF28A #8AF2C4 #908AF2 #F28AB8

split-complementary

#ECF28A #8AB8F2 #C48AF2

monochromatic

#DAE61C #E3EC53 #ECF28A #F5F8C1 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF28A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.63

#ECF28A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF28A

17.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF28A	#FFFFFF	#000000	##000000
##ECF28A	1.00	1.19	17.63	17.63
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.63	21.00	1.00	1.00
##000000	17.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA82

Deuteranopia (green-blind)

#FFED8F

Tritanopia (blue-blind)

#F8E7D9

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf28a;
/* rgb */ color: rgb(236, 242, 138);
/* oklch */ color: oklch(93.5% 0.128 111.5);

Tailwind

colors: {
  custom: {
    50: '#f4f6ae',
    500: '#ecf28a',
    950: '#000000',
  },
}

SCSS

$custom: #ecf28a;
$custom-light: #f4f6ae;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf28a",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 138
  },
  "hsl": {
    "h": 63.462,
    "s": 80,
    "l": 74.51
  },
  "oklch": {
    "l": 0.9346,
    "c": 0.12773,
    "h": 111.5
  },
  "luminance": 0.83172
}

Semantic roles & 50–950 ramp

primary

#ECF28A

secondary

#5952CE

accent

#09DC15

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF28A

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

Preview Lab → · Contrast checker → · Palette generator →