#ECFD5A#ECFD5A

#ECFD5A is a very light, vivid yellow. Relative luminance 0.888; OKLCH L 95.2% C 0.182 H 115.0°. Best body text is #000000 at 18.76:1 contrast (WCAG AA passes).

Color values

HEX	#ECFD5A
RGB	rgb(236, 253, 90)
HSL	hsl(66, 98%, 67%)
HSV	hsv(66, 64%, 99%)
CMYK	cmyk(6.7%, 0%, 64.4%, 0.8%)
CIE-LAB	lab(95.51, -25.76, 73.06)
CIE-LCH	lch(95.51, 77.47, 109.42°)
OKLab	oklab(95.24% -0.077 0.1651)
OKLCH	oklch(95.24% 0.182 115)
XYZ	xyz(71.5646, 88.8228, 23.0454)
Luminance	0.8882 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFD5A #6B5AFD

analogous

#FDBD5A #ECFD5A #9AFD5A

triadic

#ECFD5A #5AECFD #FD5AEC

tetradic

#ECFD5A #5AFDBD #6B5AFD #FD5A9A

square

#ECFD5A #5AFDBD #6B5AFD #FD5A9A

split-complementary

#ECFD5A #5A9AFD #BD5AFD

monochromatic

#C4DA03 #E5FC1E #ECFD5A #F3FE96 #FAFED3

Accessibility & contrast

On white

1.12

#ECFD5A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.76

#ECFD5A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFD5A

18.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFD5A	#FFFFFF	#000000	##000000
##ECFD5A	1.00	1.12	18.76	18.76
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.76	21.00	1.00	1.00
##000000	18.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF144

Deuteranopia (green-blind)

#FFF365

Tritanopia (blue-blind)

#FAEFDC

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #ecfd5a;
/* rgb */ color: rgb(236, 253, 90);
/* oklch */ color: oklch(95.2% 0.182 115.0);

Tailwind

colors: {
  custom: {
    50: '#f5fe90',
    500: '#ecfd5a',
    950: '#000000',
  },
}

SCSS

$custom: #ecfd5a;
$custom-light: #f5fe90;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfd5a",
  "rgb": {
    "r": 236,
    "g": 253,
    "b": 90
  },
  "hsl": {
    "h": 66.258,
    "s": 97.605,
    "l": 67.255
  },
  "oklch": {
    "l": 0.9524,
    "c": 0.18223,
    "h": 115
  },
  "luminance": 0.88822
}

Semantic roles & 50–950 ramp

primary

#ECFD5A

secondary

#3A28D3

accent

#00E618

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFD5A

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

Preview Lab → · Contrast checker → · Palette generator →