#ECFD99#ECFD99

#ECFD99 is a very light, vivid yellow-green. Relative luminance 0.904; OKLCH L 96.0% C 0.125 H 116.7°. Best body text is #000000 at 19.08:1 contrast (WCAG AA passes).

Color values

HEX	#ECFD99
RGB	rgb(236, 253, 153)
HSL	hsl(70, 96%, 80%)
HSV	hsv(70, 40%, 99%)
CMYK	cmyk(6.7%, 0%, 39.5%, 0.8%)
CIE-LAB	lab(96.16, -20.43, 45.96)
CIE-LCH	lch(96.16, 50.30, 113.97°)
OKLab	oklab(95.97% -0.0564 0.112)
OKLCH	oklch(95.97% 0.125 116.7)
XYZ	xyz(75.4675, 90.3840, 43.6010)
Luminance	0.9038 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFD99 #AA99FD

analogous

#FDDC99 #ECFD99 #BAFD99

triadic

#ECFD99 #99ECFD #FD99EC

tetradic

#ECFD99 #99FDDC #AA99FD #FD99BA

square

#ECFD99 #99FDDC #AA99FD #FD99BA

split-complementary

#ECFD99 #99BAFD #DC99FD

monochromatic

#D6FB21 #E1FC5D #ECFD99 #F7FED5 #F9FEE1

Accessibility & contrast

On white

1.10

#ECFD99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.08

#ECFD99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFD99

19.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFD99	#FFFFFF	#000000	##000000
##ECFD99	1.00	1.10	19.08	19.08
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.08	21.00	1.00	1.00
##000000	19.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF391

Deuteranopia (green-blind)

#FFF59E

Tritanopia (blue-blind)

#F6F3E5

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecfd99;
/* rgb */ color: rgb(236, 253, 153);
/* oklch */ color: oklch(96.0% 0.125 116.7);

Tailwind

colors: {
  custom: {
    50: '#f3feb8',
    500: '#ecfd99',
    950: '#000000',
  },
}

SCSS

$custom: #ecfd99;
$custom-light: #f3feb8;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfd99",
  "rgb": {
    "r": 236,
    "g": 253,
    "b": 153
  },
  "hsl": {
    "h": 70.2,
    "s": 96.154,
    "l": 79.608
  },
  "oklch": {
    "l": 0.95969,
    "c": 0.12542,
    "h": 116.7
  },
  "luminance": 0.90383
}

Semantic roles & 50–950 ramp

primary

#ECFD99

secondary

#725BDF

accent

#00E627

background

#FFFFFD

surface

#FEFFF8

border

#D6D7D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECFD99

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

Preview Lab → · Contrast checker → · Palette generator →