#ECF536#ECF536

#ECF536 is a very light, vivid yellow. Relative luminance 0.834; OKLCH L 93.3% C 0.194 H 112.4°. Best body text is #000000 at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#ECF536
RGB	rgb(236, 245, 54)
HSL	hsl(63, 91%, 59%)
HSV	hsv(63, 78%, 96%)
CMYK	cmyk(3.7%, 0%, 78%, 3.9%)
CIE-LAB	lab(93.19, -23.65, 82.70)
CIE-LCH	lch(93.19, 86.01, 105.96°)
OKLab	oklab(93.32% -0.0742 0.1797)
OKLCH	oklch(93.32% 0.194 112.4)
XYZ	xyz(67.9127, 83.4057, 16.0108)
Luminance	0.8340 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF536 #3F36F5

analogous

#F59E36 #ECF536 #8CF536

triadic

#ECF536 #36ECF5 #F536EC

tetradic

#ECF536 #36F59E #3F36F5 #F5368C

square

#ECF536 #36F59E #3F36F5 #F5368C

split-complementary

#ECF536 #368CF5 #9E36F5

monochromatic

#A1A808 #D8E30B #ECF536 #F2F870 #F7FBAB

Accessibility & contrast

On white

1.19

#ECF536 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.68

#ECF536 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF536

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF536	#FFFFFF	#000000	##000000
##ECF536	1.00	1.19	17.68	17.68
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.68	21.00	1.00	1.00
##000000	17.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE900

Deuteranopia (green-blind)

#FFED48

Tritanopia (blue-blind)

#FCE6D2

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf536;
/* rgb */ color: rgb(236, 245, 54);
/* oklch */ color: oklch(93.3% 0.194 112.4);

Tailwind

colors: {
  custom: {
    50: '#f6f87e',
    500: '#ecf536',
    950: '#000000',
  },
}

SCSS

$custom: #ecf536;
$custom-light: #f6f87e;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf536",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 54
  },
  "hsl": {
    "h": 62.827,
    "s": 90.521,
    "l": 58.627
  },
  "oklch": {
    "l": 0.93321,
    "c": 0.19444,
    "h": 112.4
  },
  "luminance": 0.83404
}

Semantic roles & 50–950 ramp

primary

#ECF536

secondary

#2C26A9

accent

#29FF33

background

#FFFFFB

surface

#FFFEF2

border

#D7D6CC

text

#18170B

muted

#86857E

Preview Lab

Preview with #ECF536

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

Preview Lab → · Contrast checker → · Palette generator →