#ECFD5C#ECFD5C

#ECFD5C is a very light, vivid yellow. Relative luminance 0.889; OKLCH L 95.3% C 0.181 H 115.0°. Best body text is #000000 at 18.77:1 contrast (WCAG AA passes).

Color values

HEX	#ECFD5C
RGB	rgb(236, 253, 92)
HSL	hsl(66, 98%, 68%)
HSV	hsv(66, 64%, 99%)
CMYK	cmyk(6.7%, 0%, 63.6%, 0.8%)
CIE-LAB	lab(95.52, -25.64, 72.31)
CIE-LCH	lch(95.52, 76.72, 109.52°)
OKLab	oklab(95.26% -0.0765 0.1638)
OKLCH	oklch(95.26% 0.181 115)
XYZ	xyz(71.6508, 88.8573, 23.4998)
Luminance	0.8886 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFD5C #6D5CFD

analogous

#FDBD5C #ECFD5C #9CFD5C

triadic

#ECFD5C #5CECFD #FD5CEC

tetradic

#ECFD5C #5CFDBD #6D5CFD #FD5C9C

square

#ECFD5C #5CFDBD #6D5CFD #FD5C9C

split-complementary

#ECFD5C #5C9CFD #BD5CFD

monochromatic

#C5DC03 #E5FC20 #ECFD5C #F3FE98 #FAFED5

Accessibility & contrast

On white

1.12

#ECFD5C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.77

#ECFD5C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFD5C

18.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFD5C	#FFFFFF	#000000	##000000
##ECFD5C	1.00	1.12	18.77	18.77
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.77	21.00	1.00	1.00
##000000	18.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF146

Deuteranopia (green-blind)

#FFF467

Tritanopia (blue-blind)

#FAEFDC

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #ecfd5c;
/* rgb */ color: rgb(236, 253, 92);
/* oklch */ color: oklch(95.3% 0.181 115.0);

Tailwind

colors: {
  custom: {
    50: '#f5fe91',
    500: '#ecfd5c',
    950: '#000000',
  },
}

SCSS

$custom: #ecfd5c;
$custom-light: #f5fe91;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfd5c",
  "rgb": {
    "r": 236,
    "g": 253,
    "b": 92
  },
  "hsl": {
    "h": 66.335,
    "s": 97.576,
    "l": 67.647
  },
  "oklch": {
    "l": 0.95256,
    "c": 0.18082,
    "h": 115
  },
  "luminance": 0.88856
}

Semantic roles & 50–950 ramp

primary

#ECFD5C

secondary

#3A28D5

accent

#00E618

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFD5C

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

Preview Lab → · Contrast checker → · Palette generator →