#ECF178#ECF178

#ECF178 is a very light, vivid yellow. Relative luminance 0.821; OKLCH L 93.0% C 0.144 H 111.0°. Best body text is #000000 at 17.42:1 contrast (WCAG AA passes).

Color values

HEX	#ECF178
RGB	rgb(236, 241, 120)
HSL	hsl(62, 81%, 71%)
HSV	hsv(62, 50%, 95%)
CMYK	cmyk(2.1%, 0%, 50.2%, 5.5%)
CIE-LAB	lab(92.62, -17.86, 57.20)
CIE-LCH	lch(92.62, 59.92, 107.34°)
OKLab	oklab(93.02% -0.0518 0.1348)
OKLCH	oklch(93.02% 0.144 111)
XYZ	xyz(69.4390, 82.1010, 29.9548)
Luminance	0.8210 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF178 #7D78F1

analogous

#F1B978 #ECF178 #AFF178

triadic

#ECF178 #78ECF1 #F178EC

tetradic

#ECF178 #78F1B9 #7D78F1 #F178AF

square

#ECF178 #78F1B9 #7D78F1 #F178AF

split-complementary

#ECF178 #78AFF1 #B978F1

monochromatic

#D0D816 #E4EB41 #ECF178 #F4F7AF #FBFCE3

Accessibility & contrast

On white

1.21

#ECF178 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.42

#ECF178 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF178

17.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF178	#FFFFFF	#000000	##000000
##ECF178	1.00	1.21	17.42	17.42
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.42	21.00	1.00	1.00
##000000	17.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE86D

Deuteranopia (green-blind)

#FFEC7E

Tritanopia (blue-blind)

#FAE5D6

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf178;
/* rgb */ color: rgb(236, 241, 120);
/* oklch */ color: oklch(93.0% 0.144 111.0);

Tailwind

colors: {
  custom: {
    50: '#f4f5a2',
    500: '#ecf178',
    950: '#000000',
  },
}

SCSS

$custom: #ecf178;
$custom-light: #f4f5a2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf178",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 120
  },
  "hsl": {
    "h": 62.479,
    "s": 81.208,
    "l": 70.784
  },
  "oklch": {
    "l": 0.93017,
    "c": 0.14443,
    "h": 111
  },
  "luminance": 0.821
}

Semantic roles & 50–950 ramp

primary

#ECF178

secondary

#4842CB

accent

#08DE11

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF178

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

Preview Lab → · Contrast checker → · Palette generator →