#ECF17F#ECF17F

#ECF17F is a very light, vivid yellow. Relative luminance 0.823; OKLCH L 93.1% C 0.138 H 111.0°. Best body text is #000000 at 17.46:1 contrast (WCAG AA passes).

Color values

HEX	#ECF17F
RGB	rgb(236, 241, 127)
HSL	hsl(63, 80%, 72%)
HSV	hsv(63, 47%, 95%)
CMYK	cmyk(2.1%, 0%, 47.3%, 5.5%)
CIE-LAB	lab(92.70, -17.25, 54.06)
CIE-LCH	lch(92.70, 56.74, 107.70°)
OKLab	oklab(93.1% -0.0494 0.1285)
OKLCH	oklch(93.1% 0.138 111)
XYZ	xyz(69.8794, 82.2771, 32.2745)
Luminance	0.8228 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF17F #847FF1

analogous

#F1BD7F #ECF17F #B3F17F

triadic

#ECF17F #7FECF1 #F17FEC

tetradic

#ECF17F #7FF1BD #847FF1 #F17FB3

square

#ECF17F #7FF1BD #847FF1 #F17FB3

split-complementary

#ECF17F #7FB3F1 #BD7FF1

monochromatic

#D5DD18 #E4EB48 #ECF17F #F4F7B6 #FBFCE3

Accessibility & contrast

On white

1.20

#ECF17F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.46

#ECF17F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF17F

17.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF17F	#FFFFFF	#000000	##000000
##ECF17F	1.00	1.20	17.46	17.46
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.46	21.00	1.00	1.00
##000000	17.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE875

Deuteranopia (green-blind)

#FFEC85

Tritanopia (blue-blind)

#F9E5D7

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf17f;
/* rgb */ color: rgb(236, 241, 127);
/* oklch */ color: oklch(93.1% 0.138 111.0);

Tailwind

colors: {
  custom: {
    50: '#f4f5a6',
    500: '#ecf17f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf17f;
$custom-light: #f4f5a6;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf17f",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 127
  },
  "hsl": {
    "h": 62.632,
    "s": 80.282,
    "l": 72.157
  },
  "oklch": {
    "l": 0.93104,
    "c": 0.1377,
    "h": 111
  },
  "luminance": 0.82276
}

Semantic roles & 50–950 ramp

primary

#ECF17F

secondary

#4E48CC

accent

#09DD12

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#171710

muted

#858580

Preview Lab

Preview with #ECF17F

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

Preview Lab → · Contrast checker → · Palette generator →