#ECF963#ECF963

#ECF963 is a very light, vivid yellow. Relative luminance 0.865; OKLCH L 94.5% C 0.171 H 113.9°. Best body text is #000000 at 18.30:1 contrast (WCAG AA passes).

Color values

HEX	#ECF963
RGB	rgb(236, 249, 99)
HSL	hsl(65, 93%, 68%)
HSV	hsv(65, 60%, 98%)
CMYK	cmyk(5.2%, 0%, 60.2%, 2.4%)
CIE-LAB	lab(94.52, -23.30, 68.46)
CIE-LCH	lch(94.52, 72.32, 108.80°)
OKLab	oklab(94.47% -0.0693 0.1566)
OKLCH	oklch(94.47% 0.171 113.9)
XYZ	xyz(70.7216, 86.4864, 24.7700)
Luminance	0.8649 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF963 #7063F9

analogous

#F9BB63 #ECF963 #A1F963

triadic

#ECF963 #63ECF9 #F963EC

tetradic

#ECF963 #63F9BB #7063F9 #F963A1

square

#ECF963 #63F9BB #7063F9 #F963A1

split-complementary

#ECF963 #63A1F9 #BB63F9

monochromatic

#C7D908 #E5F728 #ECF963 #F3FB9E #FAFED9

Accessibility & contrast

On white

1.15

#ECF963 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.30

#ECF963 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF963

18.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF963	#FFFFFF	#000000	##000000
##ECF963	1.00	1.15	18.30	18.30
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.30	21.00	1.00	1.00
##000000	18.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE51

Deuteranopia (green-blind)

#FFF16D

Tritanopia (blue-blind)

#FAEBD9

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #ecf963;
/* rgb */ color: rgb(236, 249, 99);
/* oklch */ color: oklch(94.5% 0.171 113.9);

Tailwind

colors: {
  custom: {
    50: '#f5fb95',
    500: '#ecf963',
    950: '#000000',
  },
}

SCSS

$custom: #ecf963;
$custom-light: #f5fb95;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf963",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 99
  },
  "hsl": {
    "h": 65.2,
    "s": 92.593,
    "l": 68.235
  },
  "oklch": {
    "l": 0.94472,
    "c": 0.17128,
    "h": 113.9
  },
  "luminance": 0.86485
}

Semantic roles & 50–950 ramp

primary

#ECF963

secondary

#3C2ED2

accent

#00E614

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF963

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

Preview Lab → · Contrast checker → · Palette generator →