#ECF183#ECF183

#ECF183 is a very light, vivid yellow. Relative luminance 0.824; OKLCH L 93.2% C 0.134 H 111.0°. Best body text is #000000 at 17.48:1 contrast (WCAG AA passes).

Color values

HEX	#ECF183
RGB	rgb(236, 241, 131)
HSL	hsl(63, 80%, 73%)
HSV	hsv(63, 46%, 95%)
CMYK	cmyk(2.1%, 0%, 45.6%, 5.5%)
CIE-LAB	lab(92.74, -16.88, 52.24)
CIE-LCH	lch(92.74, 54.90, 107.91°)
OKLab	oklab(93.16% -0.048 0.1248)
OKLCH	oklch(93.16% 0.134 111)
XYZ	xyz(70.1453, 82.3835, 33.6748)
Luminance	0.8238 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF183 #8883F1

analogous

#F1BF83 #ECF183 #B5F183

triadic

#ECF183 #83ECF1 #F183EC

tetradic

#ECF183 #83F1BF #8883F1 #F183B5

square

#ECF183 #83F1BF #8883F1 #F183B5

split-complementary

#ECF183 #83B5F1 #BF83F1

monochromatic

#D7E019 #E4EB4C #ECF183 #F4F7BA #FBFCE4

Accessibility & contrast

On white

1.20

#ECF183 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.48

#ECF183 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF183

17.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF183	#FFFFFF	#000000	##000000
##ECF183	1.00	1.20	17.48	17.48
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.48	21.00	1.00	1.00
##000000	17.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE87A

Deuteranopia (green-blind)

#FFEC88

Tritanopia (blue-blind)

#F9E5D7

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf183;
/* rgb */ color: rgb(236, 241, 131);
/* oklch */ color: oklch(93.2% 0.134 111.0);

Tailwind

colors: {
  custom: {
    50: '#f4f5a9',
    500: '#ecf183',
    950: '#000000',
  },
}

SCSS

$custom: #ecf183;
$custom-light: #f4f5a9;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf183",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 131
  },
  "hsl": {
    "h": 62.727,
    "s": 79.71,
    "l": 72.941
  },
  "oklch": {
    "l": 0.93156,
    "c": 0.13372,
    "h": 111
  },
  "luminance": 0.82382
}

Semantic roles & 50–950 ramp

primary

#ECF183

secondary

#524CCC

accent

#09DC13

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF183

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

Preview Lab → · Contrast checker → · Palette generator →