#ECF171#ECF171

#ECF171 is a very light, vivid yellow. Relative luminance 0.819; OKLCH L 92.9% C 0.151 H 111.0°. Best body text is #000000 at 17.39:1 contrast (WCAG AA passes).

Color values

HEX	#ECF171
RGB	rgb(236, 241, 113)
HSL	hsl(62, 82%, 69%)
HSV	hsv(62, 53%, 95%)
CMYK	cmyk(2.1%, 0%, 53.1%, 5.5%)
CIE-LAB	lab(92.55, -18.44, 60.27)
CIE-LCH	lch(92.55, 63.03, 107.01°)
OKLab	oklab(92.94% -0.0541 0.1408)
OKLCH	oklch(92.94% 0.151 111)
XYZ	xyz(69.0296, 81.9372, 27.7987)
Luminance	0.8194 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF171 #7671F1

analogous

#F1B671 #ECF171 #ACF171

triadic

#ECF171 #71ECF1 #F171EC

tetradic

#ECF171 #71F1B6 #7671F1 #F171AC

square

#ECF171 #71F1B6 #7671F1 #F171AC

split-complementary

#ECF171 #71ACF1 #B671F1

monochromatic

#CBD315 #E5EC39 #ECF171 #F3F6A9 #FBFCE0

Accessibility & contrast

On white

1.21

#ECF171 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.39

#ECF171 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF171

17.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF171	#FFFFFF	#000000	##000000
##ECF171	1.00	1.21	17.39	17.39
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.39	21.00	1.00	1.00
##000000	17.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE864

Deuteranopia (green-blind)

#FFEB78

Tritanopia (blue-blind)

#FAE4D5

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf171;
/* rgb */ color: rgb(236, 241, 113);
/* oklch */ color: oklch(92.9% 0.151 111.0);

Tailwind

colors: {
  custom: {
    50: '#f4f59d',
    500: '#ecf171',
    950: '#000000',
  },
}

SCSS

$custom: #ecf171;
$custom-light: #f4f59d;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf171",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 113
  },
  "hsl": {
    "h": 62.344,
    "s": 82.051,
    "l": 69.412
  },
  "oklch": {
    "l": 0.92936,
    "c": 0.15084,
    "h": 111
  },
  "luminance": 0.81936
}

Semantic roles & 50–950 ramp

primary

#ECF171

secondary

#413CCA

accent

#07DE0F

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF171

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

Preview Lab → · Contrast checker → · Palette generator →