#ECF28F#ECF28F

#ECF28F is a very light, vivid yellow. Relative luminance 0.833; OKLCH L 93.5% C 0.122 H 111.5°. Best body text is #000000 at 17.66:1 contrast (WCAG AA passes).

Color values

HEX	#ECF28F
RGB	rgb(236, 242, 143)
HSL	hsl(64, 79%, 75%)
HSV	hsv(64, 41%, 95%)
CMYK	cmyk(2.5%, 0%, 40.9%, 5.1%)
CIE-LAB	lab(93.16, -16.18, 47.01)
CIE-LCH	lch(93.16, 49.71, 108.99°)
OKLab	oklab(93.53% -0.045 0.1139)
OKLCH	oklch(93.53% 0.122 111.5)
XYZ	xyz(71.3030, 83.3215, 38.3078)
Luminance	0.8332 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF28F #958FF2

analogous

#F2C68F #ECF28F #BBF28F

triadic

#ECF28F #8FECF2 #F28FEC

tetradic

#ECF28F #8FF2C6 #958FF2 #F28FBB

square

#ECF28F #8FF2C6 #958FF2 #F28FBB

split-complementary

#ECF28F #8FBBF2 #C68FF2

monochromatic

#D9E521 #E3EC58 #ECF28F #F5F8C6 #FAFCE4

Accessibility & contrast

On white

1.19

#ECF28F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.66

#ECF28F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF28F

17.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF28F	#FFFFFF	#000000	##000000
##ECF28F	1.00	1.19	17.66	17.66
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.66	21.00	1.00	1.00
##000000	17.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA87

Deuteranopia (green-blind)

#FFED94

Tritanopia (blue-blind)

#F8E7DA

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf28f;
/* rgb */ color: rgb(236, 242, 143);
/* oklch */ color: oklch(93.5% 0.122 111.5);

Tailwind

colors: {
  custom: {
    50: '#f3f6b1',
    500: '#ecf28f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf28f;
$custom-light: #f3f6b1;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf28f",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 143
  },
  "hsl": {
    "h": 63.636,
    "s": 79.2,
    "l": 75.49
  },
  "oklch": {
    "l": 0.93533,
    "c": 0.12247,
    "h": 111.5
  },
  "luminance": 0.8332
}

Semantic roles & 50–950 ramp

primary

#ECF28F

secondary

#5E57CF

accent

#0ADB17

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF28F

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

Preview Lab → · Contrast checker → · Palette generator →