#ECF966#ECF966

#ECF966 is a very light, vivid yellow. Relative luminance 0.865; OKLCH L 94.5% C 0.169 H 113.9°. Best body text is #000000 at 18.31:1 contrast (WCAG AA passes).

Color values

HEX	#ECF966
RGB	rgb(236, 249, 102)
HSL	hsl(65, 92%, 69%)
HSV	hsv(65, 59%, 98%)
CMYK	cmyk(5.2%, 0%, 59%, 2.4%)
CIE-LAB	lab(94.54, -23.09, 67.25)
CIE-LCH	lch(94.54, 71.11, 108.95°)
OKLab	oklab(94.5% -0.0684 0.1545)
OKLCH	oklch(94.5% 0.169 113.9)
XYZ	xyz(70.8677, 86.5448, 25.5394)
Luminance	0.8654 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF966 #7366F9

analogous

#F9BD66 #ECF966 #A3F966

triadic

#ECF966 #66ECF9 #F966EC

tetradic

#ECF966 #66F9BD #7366F9 #F966A3

square

#ECF966 #66F9BD #7366F9 #F966A3

split-complementary

#ECF966 #66A3F9 #BD66F9

monochromatic

#C9DC09 #E5F72B #ECF966 #F3FBA1 #FBFEDC

Accessibility & contrast

On white

1.15

#ECF966 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.31

#ECF966 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF966

18.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF966	#FFFFFF	#000000	##000000
##ECF966	1.00	1.15	18.31	18.31
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.31	21.00	1.00	1.00
##000000	18.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE55

Deuteranopia (green-blind)

#FFF16F

Tritanopia (blue-blind)

#FAECDA

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #ecf966;
/* rgb */ color: rgb(236, 249, 102);
/* oklch */ color: oklch(94.5% 0.169 113.9);

Tailwind

colors: {
  custom: {
    50: '#f5fb97',
    500: '#ecf966',
    950: '#000000',
  },
}

SCSS

$custom: #ecf966;
$custom-light: #f5fb97;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf966",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 102
  },
  "hsl": {
    "h": 65.306,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.945,
    "c": 0.16893,
    "h": 113.9
  },
  "luminance": 0.86544
}

Semantic roles & 50–950 ramp

primary

#ECF966

secondary

#3F30D3

accent

#00E614

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF966

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

Preview Lab → · Contrast checker → · Palette generator →