#ECF73D#ECF73D

#ECF73D is a very light, vivid yellow. Relative luminance 0.847; OKLCH L 93.8% C 0.193 H 113.1°. Best body text is #000000 at 17.94:1 contrast (WCAG AA passes).

Color values

HEX	#ECF73D
RGB	rgb(236, 247, 61)
HSL	hsl(64, 92%, 60%)
HSV	hsv(64, 75%, 97%)
CMYK	cmyk(4.5%, 0%, 75.3%, 3.1%)
CIE-LAB	lab(93.75, -24.35, 81.23)
CIE-LCH	lch(93.75, 84.80, 106.69°)
OKLab	oklab(93.78% -0.0757 0.1778)
OKLCH	oklch(93.78% 0.193 113.1)
XYZ	xyz(68.6974, 84.6929, 17.1425)
Luminance	0.8469 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF73D #483DF7

analogous

#F7A53D #ECF73D #8FF73D

triadic

#ECF73D #3DECF7 #F73DEC

tetradic

#ECF73D #3DF7A5 #483DF7 #F73D8F

square

#ECF73D #3DF7A5 #483DF7 #F73D8F

split-complementary

#ECF73D #3D8FF7 #A53DF7

monochromatic

#A8B207 #E0ED0A #ECF73D #F2F978 #F8FCB3

Accessibility & contrast

On white

1.17

#ECF73D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.94

#ECF73D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF73D

17.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF73D	#FFFFFF	#000000	##000000
##ECF73D	1.00	1.17	17.94	17.94
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.94	21.00	1.00	1.00
##000000	17.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB04

Deuteranopia (green-blind)

#FFEF4E

Tritanopia (blue-blind)

#FCE8D4

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf73d;
/* rgb */ color: rgb(236, 247, 61);
/* oklch */ color: oklch(93.8% 0.193 113.1);

Tailwind

colors: {
  custom: {
    50: '#f6f981',
    500: '#ecf73d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf73d;
$custom-light: #f6f981;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf73d",
  "rgb": {
    "r": 236,
    "g": 247,
    "b": 61
  },
  "hsl": {
    "h": 63.548,
    "s": 92.079,
    "l": 60.392
  },
  "oklch": {
    "l": 0.93778,
    "c": 0.19319,
    "h": 113.1
  },
  "luminance": 0.84691
}

Semantic roles & 50–950 ramp

primary

#ECF73D

secondary

#2F26B2

accent

#00E60E

background

#FFFFFB

surface

#FFFFF2

border

#D7D7CC

text

#18170B

muted

#86857E

Preview Lab

Preview with #ECF73D

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

Preview Lab → · Contrast checker → · Palette generator →