#ECF266#ECF266

#ECF266 is a very light, vivid yellow. Relative luminance 0.823; OKLCH L 93.0% C 0.161 H 111.4°. Best body text is #000000 at 17.46:1 contrast (WCAG AA passes).

Color values

HEX	#ECF266
RGB	rgb(236, 242, 102)
HSL	hsl(63, 84%, 67%)
HSV	hsv(63, 58%, 95%)
CMYK	cmyk(2.5%, 0%, 57.9%, 5.1%)
CIE-LAB	lab(92.71, -19.74, 65.23)
CIE-LCH	lch(92.71, 68.15, 106.84°)
OKLab	oklab(93.03% -0.059 0.1502)
OKLCH	oklch(93.03% 0.161 111.4)
XYZ	xyz(68.7443, 82.2980, 24.8316)
Luminance	0.8230 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF266 #6C66F2

analogous

#F2B266 #ECF266 #A6F266

triadic

#ECF266 #66ECF2 #F266EC

tetradic

#ECF266 #66F2B2 #6C66F2 #F266A6

square

#ECF266 #66F2B2 #6C66F2 #F266A6

split-complementary

#ECF266 #66A6F2 #B266F2

monochromatic

#C4CC11 #E5ED2E #ECF266 #F3F79E #FAFCD7

Accessibility & contrast

On white

1.20

#ECF266 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.46

#ECF266 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF266

17.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF266	#FFFFFF	#000000	##000000
##ECF266	1.00	1.20	17.46	17.46
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.46	21.00	1.00	1.00
##000000	17.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE856

Deuteranopia (green-blind)

#FFEC6E

Tritanopia (blue-blind)

#FBE5D4

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf266;
/* rgb */ color: rgb(236, 242, 102);
/* oklch */ color: oklch(93.0% 0.161 111.4);

Tailwind

colors: {
  custom: {
    50: '#f5f697',
    500: '#ecf266',
    950: '#000000',
  },
}

SCSS

$custom: #ecf266;
$custom-light: #f5f697;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf266",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 102
  },
  "hsl": {
    "h": 62.571,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.9303,
    "c": 0.16133,
    "h": 111.4
  },
  "luminance": 0.82296
}

Semantic roles & 50–950 ramp

primary

#ECF266

secondary

#3A34C9

accent

#05E10E

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF266

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

Preview Lab → · Contrast checker → · Palette generator →