#ECF291#ECF291

#ECF291 is a very light, vivid yellow. Relative luminance 0.834; OKLCH L 93.6% C 0.120 H 111.6°. Best body text is #000000 at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#ECF291
RGB	rgb(236, 242, 145)
HSL	hsl(64, 79%, 76%)
HSV	hsv(64, 40%, 95%)
CMYK	cmyk(2.5%, 0%, 40.1%, 5.1%)
CIE-LAB	lab(93.18, -15.97, 46.07)
CIE-LCH	lch(93.18, 48.76, 109.12°)
OKLab	oklab(93.56% -0.0442 0.1119)
OKLCH	oklch(93.56% 0.12 111.6)
XYZ	xyz(71.4559, 83.3826, 39.1128)
Luminance	0.8338 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF291 #9791F2

analogous

#F2C791 #ECF291 #BBF291

triadic

#ECF291 #91ECF2 #F291EC

tetradic

#ECF291 #91F2C7 #9791F2 #F291BB

square

#ECF291 #91F2C7 #9791F2 #F291BB

split-complementary

#ECF291 #91BBF2 #C791F2

monochromatic

#D9E524 #E3EC5A #ECF291 #F5F8C8 #FAFCE4

Accessibility & contrast

On white

1.19

#ECF291 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.68

#ECF291 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF291

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF291	#FFFFFF	#000000	##000000
##ECF291	1.00	1.19	17.68	17.68
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.68	21.00	1.00	1.00
##000000	17.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA89

Deuteranopia (green-blind)

#FFED95

Tritanopia (blue-blind)

#F7E7DA

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf291;
/* rgb */ color: rgb(236, 242, 145);
/* oklch */ color: oklch(93.6% 0.120 111.6);

Tailwind

colors: {
  custom: {
    50: '#f3f6b2',
    500: '#ecf291',
    950: '#000000',
  },
}

SCSS

$custom: #ecf291;
$custom-light: #f3f6b2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf291",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 145
  },
  "hsl": {
    "h": 63.711,
    "s": 78.862,
    "l": 75.882
  },
  "oklch": {
    "l": 0.93563,
    "c": 0.12032,
    "h": 111.6
  },
  "luminance": 0.83381
}

Semantic roles & 50–950 ramp

primary

#ECF291

secondary

#6058CF

accent

#0ADB17

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF291

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

Preview Lab → · Contrast checker → · Palette generator →