#ECF571#ECF571

#ECF571 is a very light, vivid yellow. Relative luminance 0.843; OKLCH L 93.8% C 0.155 H 112.6°. Best body text is #000000 at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#ECF571
RGB	rgb(236, 245, 113)
HSL	hsl(64, 87%, 70%)
HSV	hsv(64, 54%, 96%)
CMYK	cmyk(3.7%, 0%, 53.9%, 3.9%)
CIE-LAB	lab(93.59, -20.37, 61.47)
CIE-LCH	lch(93.59, 64.76, 108.33°)
OKLab	oklab(93.77% -0.0596 0.1434)
OKLCH	oklch(93.77% 0.155 112.6)
XYZ	xyz(70.2266, 84.3313, 28.1977)
Luminance	0.8433 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF571 #7A71F5

analogous

#F5BC71 #ECF571 #AAF571

triadic

#ECF571 #71ECF5 #F571EC

tetradic

#ECF571 #71F5BC #7A71F5 #F571AA

square

#ECF571 #71F5BC #7A71F5 #F571AA

split-complementary

#ECF571 #71AAF5 #BC71F5

monochromatic

#CEDC10 #E4F138 #ECF571 #F4F9AA #FBFDE2

Accessibility & contrast

On white

1.18

#ECF571 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.87

#ECF571 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF571

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF571	#FFFFFF	#000000	##000000
##ECF571	1.00	1.18	17.87	17.87
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.87	21.00	1.00	1.00
##000000	17.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB64

Deuteranopia (green-blind)

#FFEE78

Tritanopia (blue-blind)

#FAE8D8

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf571;
/* rgb */ color: rgb(236, 245, 113);
/* oklch */ color: oklch(93.8% 0.155 112.6);

Tailwind

colors: {
  custom: {
    50: '#f4f89e',
    500: '#ecf571',
    950: '#000000',
  },
}

SCSS

$custom: #ecf571;
$custom-light: #f4f89e;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf571",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 113
  },
  "hsl": {
    "h": 64.091,
    "s": 86.842,
    "l": 70.196
  },
  "oklch": {
    "l": 0.93772,
    "c": 0.15527,
    "h": 112.6
  },
  "luminance": 0.8433
}

Semantic roles & 50–950 ramp

primary

#ECF571

secondary

#453BCF

accent

#02E311

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF571

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

Preview Lab → · Contrast checker → · Palette generator →