#ECF179#ECF179

#ECF179 is a very light, vivid yellow. Relative luminance 0.821; OKLCH L 93.0% C 0.143 H 111.0°. Best body text is #000000 at 17.42:1 contrast (WCAG AA passes).

Color values

HEX	#ECF179
RGB	rgb(236, 241, 121)
HSL	hsl(63, 81%, 71%)
HSV	hsv(63, 50%, 95%)
CMYK	cmyk(2.1%, 0%, 49.8%, 5.5%)
CIE-LAB	lab(92.63, -17.78, 56.75)
CIE-LCH	lch(92.63, 59.47, 107.39°)
OKLab	oklab(93.03% -0.0515 0.1339)
OKLCH	oklch(93.03% 0.143 111)
XYZ	xyz(69.5000, 82.1254, 30.2761)
Luminance	0.8212 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF179 #7E79F1

analogous

#F1BA79 #ECF179 #B0F179

triadic

#ECF179 #79ECF1 #F179EC

tetradic

#ECF179 #79F1BA #7E79F1 #F179B0

square

#ECF179 #79F1BA #7E79F1 #F179B0

split-complementary

#ECF179 #79B0F1 #BA79F1

monochromatic

#D1D917 #E4EB42 #ECF179 #F4F7B0 #FBFCE3

Accessibility & contrast

On white

1.21

#ECF179 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.42

#ECF179 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF179

17.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF179	#FFFFFF	#000000	##000000
##ECF179	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)

#FFE86E

Deuteranopia (green-blind)

#FFEC7F

Tritanopia (blue-blind)

#F9E5D6

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf179;
/* rgb */ color: rgb(236, 241, 121);
/* oklch */ color: oklch(93.0% 0.143 111.0);

Tailwind

colors: {
  custom: {
    50: '#f4f5a2',
    500: '#ecf179',
    950: '#000000',
  },
}

SCSS

$custom: #ecf179;
$custom-light: #f4f5a2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf179",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 121
  },
  "hsl": {
    "h": 62.5,
    "s": 81.081,
    "l": 70.98
  },
  "oklch": {
    "l": 0.93029,
    "c": 0.14348,
    "h": 111
  },
  "luminance": 0.82124
}

Semantic roles & 50–950 ramp

primary

#ECF179

secondary

#4943CB

accent

#08DD11

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF179

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

Preview Lab → · Contrast checker → · Palette generator →