#ECFF5A#ECFF5A

#ECFF5A is a very light, vivid yellow. Relative luminance 0.901; OKLCH L 95.7% C 0.184 H 115.6°. Best body text is #000000 at 19.02:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF5A
RGB	rgb(236, 255, 90)
HSL	hsl(67, 100%, 68%)
HSV	hsv(67, 65%, 100%)
CMYK	cmyk(7.5%, 0%, 64.7%, 0%)
CIE-LAB	lab(96.03, -26.70, 73.61)
CIE-LCH	lch(96.03, 78.30, 109.93°)
OKLab	oklab(95.66% -0.0797 0.1663)
OKLCH	oklch(95.66% 0.184 115.6)
XYZ	xyz(72.1992, 90.0921, 23.2570)
Luminance	0.9009 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF5A #6D5AFF

analogous

#FFBF5A #ECFF5A #9AFF5A

triadic

#ECFF5A #5AECFF #FF5AEC

tetradic

#ECFF5A #5AFFBF #6D5AFF #FF5A9A

square

#ECFF5A #5AFFBF #6D5AFF #FF5A9A

split-complementary

#ECFF5A #5A9AFF #BF5AFF

monochromatic

#C5DF00 #E5FF1D #ECFF5A #F3FF97 #FAFFD4

Accessibility & contrast

On white

1.10

#ECFF5A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.02

#ECFF5A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF5A

19.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF5A	#FFFFFF	#000000	##000000
##ECFF5A	1.00	1.10	19.02	19.02
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.02	21.00	1.00	1.00
##000000	19.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF343

Deuteranopia (green-blind)

#FFF566

Tritanopia (blue-blind)

#FAF1DD

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecff5a;
/* rgb */ color: rgb(236, 255, 90);
/* oklch */ color: oklch(95.7% 0.184 115.6);

Tailwind

colors: {
  custom: {
    50: '#f5ff90',
    500: '#ecff5a',
    950: '#000000',
  },
}

SCSS

$custom: #ecff5a;
$custom-light: #f5ff90;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff5a",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 90
  },
  "hsl": {
    "h": 66.909,
    "s": 100,
    "l": 67.647
  },
  "oklch": {
    "l": 0.95664,
    "c": 0.18439,
    "h": 115.6
  },
  "luminance": 0.90091
}

Semantic roles & 50–950 ramp

primary

#ECFF5A

secondary

#3A26D7

accent

#00E61A

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFF5A

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

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