#ECF365#ECF365

#ECF365 is a very light, vivid yellow. Relative luminance 0.829; OKLCH L 93.2% C 0.163 H 111.8°. Best body text is #000000 at 17.57:1 contrast (WCAG AA passes).

Color values

HEX	#ECF365
RGB	rgb(236, 243, 101)
HSL	hsl(63, 86%, 67%)
HSV	hsv(63, 58%, 95%)
CMYK	cmyk(2.9%, 0%, 58.4%, 4.7%)
CIE-LAB	lab(92.96, -20.30, 65.93)
CIE-LCH	lch(92.96, 68.99, 107.11°)
OKLab	oklab(93.23% -0.0606 0.1515)
OKLCH	oklch(93.23% 0.163 111.8)
XYZ	xyz(68.9934, 82.8751, 24.6715)
Luminance	0.8287 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF365 #6C65F3

analogous

#F3B365 #ECF365 #A5F365

triadic

#ECF365 #65ECF3 #F365EC

tetradic

#ECF365 #65F3B3 #6C65F3 #F365A5

square

#ECF365 #65F3B3 #6C65F3 #F365A5

split-complementary

#ECF365 #65A5F3 #B365F3

monochromatic

#C4CE10 #E5EF2C #ECF365 #F3F79E #FAFCD7

Accessibility & contrast

On white

1.19

#ECF365 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.57

#ECF365 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF365

17.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF365	#FFFFFF	#000000	##000000
##ECF365	1.00	1.19	17.57	17.57
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.57	21.00	1.00	1.00
##000000	17.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE955

Deuteranopia (green-blind)

#FFED6E

Tritanopia (blue-blind)

#FBE6D5

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf365;
/* rgb */ color: rgb(236, 243, 101);
/* oklch */ color: oklch(93.2% 0.163 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f696',
    500: '#ecf365',
    950: '#000000',
  },
}

SCSS

$custom: #ecf365;
$custom-light: #f5f696;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf365",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 101
  },
  "hsl": {
    "h": 62.958,
    "s": 85.542,
    "l": 67.451
  },
  "oklch": {
    "l": 0.9323,
    "c": 0.1632,
    "h": 111.8
  },
  "luminance": 0.82874
}

Semantic roles & 50–950 ramp

primary

#ECF365

secondary

#3A33CA

accent

#03E20E

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF365

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

Preview Lab → · Contrast checker → · Palette generator →