#ECF37A#ECF37A

#ECF37A is a very light, vivid yellow. Relative luminance 0.833; OKLCH L 93.5% C 0.145 H 111.9°. Best body text is #000000 at 17.67:1 contrast (WCAG AA passes).

Color values

HEX	#ECF37A
RGB	rgb(236, 243, 122)
HSL	hsl(63, 83%, 72%)
HSV	hsv(63, 50%, 95%)
CMYK	cmyk(2.9%, 0%, 49.8%, 4.7%)
CIE-LAB	lab(93.16, -18.66, 56.93)
CIE-LCH	lch(93.16, 59.91, 108.15°)
OKLab	oklab(93.46% -0.0539 0.1344)
OKLCH	oklch(93.46% 0.145 111.9)
XYZ	xyz(70.1569, 83.3405, 30.7992)
Luminance	0.8334 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF37A #817AF3

analogous

#F3BE7A #ECF37A #B0F37A

triadic

#ECF37A #7AECF3 #F37AEC

tetradic

#ECF37A #7AF3BE #817AF3 #F37AB0

square

#ECF37A #7AF3BE #817AF3 #F37AB0

split-complementary

#ECF37A #7AB0F3 #BE7AF3

monochromatic

#D3DF14 #E4EE42 #ECF37A #F4F8B2 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF37A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.67

#ECF37A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF37A

17.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF37A	#FFFFFF	#000000	##000000
##ECF37A	1.00	1.19	17.67	17.67
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.67	21.00	1.00	1.00
##000000	17.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA6F

Deuteranopia (green-blind)

#FFED80

Tritanopia (blue-blind)

#F9E7D7

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf37a;
/* rgb */ color: rgb(236, 243, 122);
/* oklch */ color: oklch(93.5% 0.145 111.9);

Tailwind

colors: {
  custom: {
    50: '#f4f6a3',
    500: '#ecf37a',
    950: '#000000',
  },
}

SCSS

$custom: #ecf37a;
$custom-light: #f4f6a3;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf37a",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 122
  },
  "hsl": {
    "h": 63.471,
    "s": 83.448,
    "l": 71.569
  },
  "oklch": {
    "l": 0.93458,
    "c": 0.14479,
    "h": 111.9
  },
  "luminance": 0.83339
}

Semantic roles & 50–950 ramp

primary

#ECF37A

secondary

#4B43CE

accent

#06E012

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF37A

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

Preview Lab → · Contrast checker → · Palette generator →