#ECF78C#ECF78C

#ECF78C is a very light, vivid yellow. Relative luminance 0.862; OKLCH L 94.5% C 0.132 H 113.7°. Best body text is #000000 at 18.25:1 contrast (WCAG AA passes).

Color values

HEX	#ECF78C
RGB	rgb(236, 247, 140)
HSL	hsl(66, 87%, 76%)
HSV	hsv(66, 43%, 97%)
CMYK	cmyk(4.5%, 0%, 43.3%, 3.1%)
CIE-LAB	lab(94.42, -18.91, 50.02)
CIE-LCH	lch(94.42, 53.48, 110.71°)
OKLab	oklab(94.53% -0.053 0.1205)
OKLCH	oklch(94.53% 0.132 113.7)
XYZ	xyz(72.5873, 86.2489, 37.6297)
Luminance	0.8625 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF78C #978CF7

analogous

#F7CC8C #ECF78C #B6F78C

triadic

#ECF78C #8CECF7 #F78CEC

tetradic

#ECF78C #8CF7CC #978CF7 #F78CB6

square

#ECF78C #8CF7CC #978CF7 #F78CB6

split-complementary

#ECF78C #8CB6F7 #CC8CF7

monochromatic

#D9EF1A #E3F353 #ECF78C #F5FBC5 #FAFDE2

Accessibility & contrast

On white

1.15

#ECF78C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.25

#ECF78C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF78C

18.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF78C	#FFFFFF	#000000	##000000
##ECF78C	1.00	1.15	18.25	18.25
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.25	21.00	1.00	1.00
##000000	18.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE83

Deuteranopia (green-blind)

#FFF091

Tritanopia (blue-blind)

#F8ECDD

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #ecf78c;
/* rgb */ color: rgb(236, 247, 140);
/* oklch */ color: oklch(94.5% 0.132 113.7);

Tailwind

colors: {
  custom: {
    50: '#f4f9af',
    500: '#ecf78c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf78c;
$custom-light: #f4f9af;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf78c",
  "rgb": {
    "r": 236,
    "g": 247,
    "b": 140
  },
  "hsl": {
    "h": 66.168,
    "s": 86.992,
    "l": 75.882
  },
  "oklch": {
    "l": 0.94528,
    "c": 0.13164,
    "h": 113.7
  },
  "luminance": 0.86248
}

Semantic roles & 50–950 ramp

primary

#ECF78C

secondary

#6052D5

accent

#02E419

background

#FFFFFD

surface

#FEFFF7

border

#D6D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF78C

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

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