#ECF566#ECF566

#ECF566 is a very light, vivid yellow. Relative luminance 0.841; OKLCH L 93.7% C 0.165 H 112.5°. Best body text is #000000 at 17.82:1 contrast (WCAG AA passes).

Color values

HEX	#ECF566
RGB	rgb(236, 245, 102)
HSL	hsl(64, 88%, 68%)
HSV	hsv(64, 58%, 96%)
CMYK	cmyk(3.7%, 0%, 58.4%, 3.9%)
CIE-LAB	lab(93.49, -21.19, 66.10)
CIE-LCH	lch(93.49, 69.41, 107.77°)
OKLab	oklab(93.66% -0.063 0.152)
OKLCH	oklch(93.66% 0.165 112.5)
XYZ	xyz(69.6445, 84.0984, 25.1317)
Luminance	0.8410 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF566 #6F66F5

analogous

#F5B666 #ECF566 #A4F566

triadic

#ECF566 #66ECF5 #F566EC

tetradic

#ECF566 #66F5B6 #6F66F5 #F566A4

square

#ECF566 #66F5B6 #6F66F5 #F566A4

split-complementary

#ECF566 #66A4F5 #B666F5

monochromatic

#C6D30E #E5F12D #ECF566 #F3F99F #FAFDD9

Accessibility & contrast

On white

1.18

#ECF566 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.82

#ECF566 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF566

17.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF566	#FFFFFF	#000000	##000000
##ECF566	1.00	1.18	17.82	17.82
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.82	21.00	1.00	1.00
##000000	17.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB56

Deuteranopia (green-blind)

#FFEE6F

Tritanopia (blue-blind)

#FAE8D6

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf566;
/* rgb */ color: rgb(236, 245, 102);
/* oklch */ color: oklch(93.7% 0.165 112.5);

Tailwind

colors: {
  custom: {
    50: '#f5f897',
    500: '#ecf566',
    950: '#000000',
  },
}

SCSS

$custom: #ecf566;
$custom-light: #f5f897;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf566",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 102
  },
  "hsl": {
    "h": 63.776,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.93659,
    "c": 0.16456,
    "h": 112.5
  },
  "luminance": 0.84097
}

Semantic roles & 50–950 ramp

primary

#ECF566

secondary

#3B31CE

accent

#01E40F

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF566

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

Preview Lab → · Contrast checker → · Palette generator →