#ECF09F#ECF09F

#ECF09F is a very light, moderate yellow. Relative luminance 0.827; OKLCH L 93.4% C 0.102 H 110.6°. Best body text is #000000 at 17.53:1 contrast (WCAG AA passes).

Color values

HEX	#ECF09F
RGB	rgb(236, 240, 159)
HSL	hsl(63, 73%, 78%)
HSV	hsv(63, 34%, 94%)
CMYK	cmyk(1.7%, 0%, 33.8%, 5.9%)
CIE-LAB	lab(92.86, -13.43, 38.77)
CIE-LCH	lch(92.86, 41.03, 109.10°)
OKLab	oklab(93.38% -0.036 0.0958)
OKLCH	oklch(93.38% 0.102 110.6)
XYZ	xyz(72.0106, 82.6573, 44.9552)
Luminance	0.8266 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF09F #A39FF0

analogous

#F0CB9F #ECF09F #C3F09F

triadic

#ECF09F #9FECF0 #F09FEC

tetradic

#ECF09F #9FF0CB #A39FF0 #F09FC3

square

#ECF09F #9FF0CB #A39FF0 #F09FC3

split-complementary

#ECF09F #9FC3F0 #CB9FF0

monochromatic

#D7DF35 #E2E86A #ECF09F #F6F8D4 #FAFBE5

Accessibility & contrast

On white

1.20

#ECF09F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.53

#ECF09F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF09F

17.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF09F	#FFFFFF	#000000	##000000
##ECF09F	1.00	1.20	17.53	17.53
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.53	21.00	1.00	1.00
##000000	17.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FCE999

Deuteranopia (green-blind)

#FDECA2

Tritanopia (blue-blind)

#F6E7DB

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf09f;
/* rgb */ color: rgb(236, 240, 159);
/* oklch */ color: oklch(93.4% 0.102 110.6);

Tailwind

colors: {
  custom: {
    50: '#f3f4bc',
    500: '#ecf09f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf09f;
$custom-light: #f3f4bc;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf09f",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 159
  },
  "hsl": {
    "h": 62.963,
    "s": 72.973,
    "l": 78.235
  },
  "oklch": {
    "l": 0.93376,
    "c": 0.10233,
    "h": 110.6
  },
  "luminance": 0.82656
}

Semantic roles & 50–950 ramp

primary

#ECF09F

secondary

#6B66CD

accent

#10D51A

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171712

muted

#858582

Preview Lab

Preview with #ECF09F

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

Preview Lab → · Contrast checker → · Palette generator →