#ECFE63#ECFE63

#ECFE63 is a very light, vivid yellow. Relative luminance 0.896; OKLCH L 95.5% C 0.177 H 115.4°. Best body text is #000000 at 18.92:1 contrast (WCAG AA passes).

Color values

HEX	#ECFE63
RGB	rgb(236, 254, 99)
HSL	hsl(67, 99%, 69%)
HSV	hsv(67, 61%, 100%)
CMYK	cmyk(7.1%, 0%, 61%, 0.4%)
CIE-LAB	lab(95.84, -25.66, 69.88)
CIE-LCH	lch(95.84, 74.44, 110.16°)
OKLab	oklab(95.53% -0.0759 0.1596)
OKLCH	oklch(95.53% 0.177 115.4)
XYZ	xyz(72.2876, 89.6184, 25.2920)
Luminance	0.8962 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFE63 #7563FE

analogous

#FEC363 #ECFE63 #9FFE63

triadic

#ECFE63 #63ECFE #FE63EC

tetradic

#ECFE63 #63FEC3 #7563FE #FE639F

square

#ECFE63 #63FEC3 #7563FE #FE639F

split-complementary

#ECFE63 #639FFE #C363FE

monochromatic

#CBE501 #E5FE26 #ECFE63 #F3FEA0 #FBFFDD

Accessibility & contrast

On white

1.11

#ECFE63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.92

#ECFE63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFE63

18.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFE63	#FFFFFF	#000000	##000000
##ECFE63	1.00	1.11	18.92	18.92
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.92	21.00	1.00	1.00
##000000	18.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF250

Deuteranopia (green-blind)

#FFF46D

Tritanopia (blue-blind)

#FAF0DE

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #ecfe63;
/* rgb */ color: rgb(236, 254, 99);
/* oklch */ color: oklch(95.5% 0.177 115.4);

Tailwind

colors: {
  custom: {
    50: '#f5fe96',
    500: '#ecfe63',
    950: '#000000',
  },
}

SCSS

$custom: #ecfe63;
$custom-light: #f5fe96;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfe63",
  "rgb": {
    "r": 236,
    "g": 254,
    "b": 99
  },
  "hsl": {
    "h": 66.968,
    "s": 98.726,
    "l": 69.216
  },
  "oklch": {
    "l": 0.95528,
    "c": 0.17678,
    "h": 115.4
  },
  "luminance": 0.89617
}

Semantic roles & 50–950 ramp

primary

#ECFE63

secondary

#412DD9

accent

#00E61B

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFE63

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

Preview Lab → · Contrast checker → · Palette generator →