#ECF57D#ECF57D

#ECF57D is a very light, vivid yellow. Relative luminance 0.846; OKLCH L 93.9% C 0.144 H 112.7°. Best body text is #000000 at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#ECF57D
RGB	rgb(236, 245, 125)
HSL	hsl(65, 86%, 73%)
HSV	hsv(65, 49%, 96%)
CMYK	cmyk(3.7%, 0%, 49%, 3.9%)
CIE-LAB	lab(93.72, -19.37, 56.21)
CIE-LCH	lch(93.72, 59.45, 109.01°)
OKLab	oklab(93.91% -0.0556 0.1331)
OKLCH	oklch(93.91% 0.144 112.7)
XYZ	xyz(70.9474, 84.6196, 31.9938)
Luminance	0.8462 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF57D #867DF5

analogous

#F5C27D #ECF57D #B0F57D

triadic

#ECF57D #7DECF5 #F57DEC

tetradic

#ECF57D #7DF5C2 #867DF5 #F57DB0

square

#ECF57D #7DF5C2 #867DF5 #F57DB0

split-complementary

#ECF57D #7DB0F5 #C27DF5

monochromatic

#D6E612 #E4F144 #ECF57D #F4F9B6 #FBFDE3

Accessibility & contrast

On white

1.17

#ECF57D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.92

#ECF57D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF57D

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF57D	#FFFFFF	#000000	##000000
##ECF57D	1.00	1.17	17.92	17.92
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.92	21.00	1.00	1.00
##000000	17.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB72

Deuteranopia (green-blind)

#FFEE83

Tritanopia (blue-blind)

#F9E9DA

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf57d;
/* rgb */ color: rgb(236, 245, 125);
/* oklch */ color: oklch(93.9% 0.144 112.7);

Tailwind

colors: {
  custom: {
    50: '#f4f8a5',
    500: '#ecf57d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf57d;
$custom-light: #f4f8a5;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf57d",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 125
  },
  "hsl": {
    "h": 64.5,
    "s": 85.714,
    "l": 72.549
  },
  "oklch": {
    "l": 0.93912,
    "c": 0.14423,
    "h": 112.7
  },
  "luminance": 0.84618
}

Semantic roles & 50–950 ramp

primary

#ECF57D

secondary

#5046D1

accent

#03E214

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF57D

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

Preview Lab → · Contrast checker → · Palette generator →