#ECFF58#ECFF58

#ECFF58 is a very light, vivid yellow. Relative luminance 0.901; OKLCH L 95.6% C 0.186 H 115.6°. Best body text is #000000 at 19.01:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF58
RGB	rgb(236, 255, 88)
HSL	hsl(67, 100%, 67%)
HSV	hsv(67, 65%, 100%)
CMYK	cmyk(7.5%, 0%, 65.5%, 0%)
CIE-LAB	lab(96.02, -26.81, 74.35)
CIE-LCH	lch(96.02, 79.04, 109.83°)
OKLab	oklab(95.65% -0.0802 0.1676)
OKLCH	oklch(95.65% 0.186 115.6)
XYZ	xyz(72.1153, 90.0585, 22.8147)
Luminance	0.9006 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF58 #6B58FF

analogous

#FFBE58 #ECFF58 #99FF58

triadic

#ECFF58 #58ECFF #FF58EC

tetradic

#ECFF58 #58FFBE #6B58FF #FF5899

square

#ECFF58 #58FFBE #6B58FF #FF5899

split-complementary

#ECFF58 #5899FF #BE58FF

monochromatic

#C4DD00 #E5FF1B #ECFF58 #F3FF95 #FAFFD2

Accessibility & contrast

On white

1.10

#ECFF58 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.01

#ECFF58 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF58

19.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF58	#FFFFFF	#000000	##000000
##ECFF58	1.00	1.10	19.01	19.01
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.01	21.00	1.00	1.00
##000000	19.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF240

Deuteranopia (green-blind)

#FFF564

Tritanopia (blue-blind)

#FAF1DD

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecff58;
/* rgb */ color: rgb(236, 255, 88);
/* oklch */ color: oklch(95.6% 0.186 115.6);

Tailwind

colors: {
  custom: {
    50: '#f6ff8f',
    500: '#ecff58',
    950: '#000000',
  },
}

SCSS

$custom: #ecff58;
$custom-light: #f6ff8f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff58",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 88
  },
  "hsl": {
    "h": 66.826,
    "s": 100,
    "l": 67.255
  },
  "oklch": {
    "l": 0.95648,
    "c": 0.18576,
    "h": 115.6
  },
  "luminance": 0.90057
}

Semantic roles & 50–950 ramp

primary

#ECFF58

secondary

#3A26D6

accent

#00E61A

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFF58

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

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