#ECF978#ECF978

#ECF978 is a very light, vivid yellow. Relative luminance 0.869; OKLCH L 94.7% C 0.154 H 114.1°. Best body text is #000000 at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#ECF978
RGB	rgb(236, 249, 120)
HSL	hsl(66, 91%, 72%)
HSV	hsv(66, 52%, 98%)
CMYK	cmyk(5.2%, 0%, 51.8%, 2.4%)
CIE-LAB	lab(94.71, -21.72, 59.65)
CIE-LCH	lch(94.71, 63.48, 110.00°)
OKLab	oklab(94.69% -0.0627 0.1401)
OKLCH	oklch(94.69% 0.154 114.1)
XYZ	xyz(71.8592, 86.9414, 30.7615)
Luminance	0.8694 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF978 #8578F9

analogous

#F9C678 #ECF978 #ABF978

triadic

#ECF978 #78ECF9 #F978EC

tetradic

#ECF978 #78F9C6 #8578F9 #F978AB

square

#ECF978 #78F9C6 #8578F9 #F978AB

split-complementary

#ECF978 #78ABF9 #C678F9

monochromatic

#D5EC0A #E4F63D #ECF978 #F4FCB3 #FBFEE2

Accessibility & contrast

On white

1.14

#ECF978 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.39

#ECF978 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF978

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF978	#FFFFFF	#000000	##000000
##ECF978	1.00	1.14	18.39	18.39
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.39	21.00	1.00	1.00
##000000	18.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF6C

Deuteranopia (green-blind)

#FFF17F

Tritanopia (blue-blind)

#F9EDDC

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecf978;
/* rgb */ color: rgb(236, 249, 120);
/* oklch */ color: oklch(94.7% 0.154 114.1);

Tailwind

colors: {
  custom: {
    50: '#f4fba2',
    500: '#ecf978',
    950: '#000000',
  },
}

SCSS

$custom: #ecf978;
$custom-light: #f4fba2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf978",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 120
  },
  "hsl": {
    "h": 66.047,
    "s": 91.489,
    "l": 72.353
  },
  "oklch": {
    "l": 0.94689,
    "c": 0.15354,
    "h": 114.1
  },
  "luminance": 0.8694
}

Semantic roles & 50–950 ramp

primary

#ECF978

secondary

#4F40D5

accent

#00E617

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF978

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

Preview Lab → · Contrast checker → · Palette generator →