#ECFF52#ECFF52

#ECFF52 is a very light, vivid yellow. Relative luminance 0.900; OKLCH L 95.6% C 0.190 H 115.5°. Best body text is #000000 at 18.99:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF52
RGB	rgb(236, 255, 82)
HSL	hsl(67, 100%, 66%)
HSV	hsv(67, 68%, 100%)
CMYK	cmyk(7.5%, 0%, 67.8%, 0%)
CIE-LAB	lab(95.98, -27.15, 76.50)
CIE-LCH	lch(95.98, 81.17, 109.54°)
OKLab	oklab(95.6% -0.0817 0.1712)
OKLCH	oklch(95.6% 0.19 115.5)
XYZ	xyz(71.8769, 89.9632, 21.5592)
Luminance	0.8996 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF52 #6552FF

analogous

#FFBC52 #ECFF52 #95FF52

triadic

#ECFF52 #52ECFF #FF52EC

tetradic

#ECFF52 #52FFBC #6552FF #FF5295

square

#ECFF52 #52FFBC #6552FF #FF5295

split-complementary

#ECFF52 #5295FF #BC52FF

monochromatic

#BFD700 #E5FF15 #ECFF52 #F3FF8F #F9FFCC

Accessibility & contrast

On white

1.11

#ECFF52 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.99

#ECFF52 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF52

18.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF52	#FFFFFF	#000000	##000000
##ECFF52	1.00	1.11	18.99	18.99
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.99	21.00	1.00	1.00
##000000	18.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF236

Deuteranopia (green-blind)

#FFF55F

Tritanopia (blue-blind)

#FBF1DD

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #ecff52;
/* rgb */ color: rgb(236, 255, 82);
/* oklch */ color: oklch(95.6% 0.190 115.5);

Tailwind

colors: {
  custom: {
    50: '#f6ff8c',
    500: '#ecff52',
    950: '#000000',
  },
}

SCSS

$custom: #ecff52;
$custom-light: #f6ff8c;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff52",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 82
  },
  "hsl": {
    "h": 66.59,
    "s": 100,
    "l": 66.078
  },
  "oklch": {
    "l": 0.95604,
    "c": 0.18967,
    "h": 115.5
  },
  "luminance": 0.89962
}

Semantic roles & 50–950 ramp

primary

#ECFF52

secondary

#3825D0

accent

#00E619

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFF52

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

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