#ECF363#ECF363

#ECF363 is a very light, vivid yellow. Relative luminance 0.828; OKLCH L 93.2% C 0.165 H 111.8°. Best body text is #000000 at 17.57:1 contrast (WCAG AA passes).

Color values

HEX	#ECF363
RGB	rgb(236, 243, 99)
HSL	hsl(63, 86%, 67%)
HSV	hsv(63, 59%, 95%)
CMYK	cmyk(2.9%, 0%, 59.3%, 4.7%)
CIE-LAB	lab(92.94, -20.43, 66.75)
CIE-LCH	lch(92.94, 69.81, 107.02°)
OKLab	oklab(93.21% -0.0612 0.153)
OKLCH	oklch(93.21% 0.165 111.8)
XYZ	xyz(68.8966, 82.8364, 24.1617)
Luminance	0.8284 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF363 #6A63F3

analogous

#F3B263 #ECF363 #A4F363

triadic

#ECF363 #63ECF3 #F363EC

tetradic

#ECF363 #63F3B2 #6A63F3 #F363A4

square

#ECF363 #63F3B2 #6A63F3 #F363A4

split-complementary

#ECF363 #63A4F3 #B263F3

monochromatic

#C3CC10 #E5EF2A #ECF363 #F3F79C #FAFCD5

Accessibility & contrast

On white

1.20

#ECF363 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.57

#ECF363 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF363

17.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF363	#FFFFFF	#000000	##000000
##ECF363	1.00	1.20	17.57	17.57
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.57	21.00	1.00	1.00
##000000	17.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE952

Deuteranopia (green-blind)

#FFED6C

Tritanopia (blue-blind)

#FBE5D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf363;
/* rgb */ color: rgb(236, 243, 99);
/* oklch */ color: oklch(93.2% 0.165 111.8);

Tailwind

colors: {
  custom: {
    50: '#f5f695',
    500: '#ecf363',
    950: '#000000',
  },
}

SCSS

$custom: #ecf363;
$custom-light: #f5f695;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf363",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 99
  },
  "hsl": {
    "h": 62.917,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.9321,
    "c": 0.1648,
    "h": 111.8
  },
  "luminance": 0.82835
}

Semantic roles & 50–950 ramp

primary

#ECF363

secondary

#3932C8

accent

#03E20E

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF363

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

Preview Lab → · Contrast checker → · Palette generator →