#ECF54E#ECF54E

#ECF54E is a very light, vivid yellow. Relative luminance 0.837; OKLCH L 93.5% C 0.182 H 112.5°. Best body text is #000000 at 17.74:1 contrast (WCAG AA passes).

Color values

HEX	#ECF54E
RGB	rgb(236, 245, 78)
HSL	hsl(63, 89%, 63%)
HSV	hsv(63, 68%, 96%)
CMYK	cmyk(3.7%, 0%, 68.2%, 3.9%)
CIE-LAB	lab(93.32, -22.64, 75.27)
CIE-LCH	lch(93.32, 78.60, 106.74°)
OKLab	oklab(93.46% -0.0694 0.168)
OKLCH	oklch(93.46% 0.182 112.5)
XYZ	xyz(68.6217, 83.6893, 19.7451)
Luminance	0.8369 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF54E #574EF5

analogous

#F5AB4E #ECF54E #98F54E

triadic

#ECF54E #4EECF5 #F54EEC

tetradic

#ECF54E #4EF5AB #574EF5 #F54E98

square

#ECF54E #4EF5AB #574EF5 #F54E98

split-complementary

#ECF54E #4E98F5 #AB4EF5

monochromatic

#B4BE0B #E6F214 #ECF54E #F2F888 #F8FCC2

Accessibility & contrast

On white

1.18

#ECF54E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.74

#ECF54E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF54E

17.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF54E	#FFFFFF	#000000	##000000
##ECF54E	1.00	1.18	17.74	17.74
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.74	21.00	1.00	1.00
##000000	17.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA33

Deuteranopia (green-blind)

#FFEE5A

Tritanopia (blue-blind)

#FCE7D4

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf54e;
/* rgb */ color: rgb(236, 245, 78);
/* oklch */ color: oklch(93.5% 0.182 112.5);

Tailwind

colors: {
  custom: {
    50: '#f6f889',
    500: '#ecf54e',
    950: '#000000',
  },
}

SCSS

$custom: #ecf54e;
$custom-light: #f6f889;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf54e",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 78
  },
  "hsl": {
    "h": 63.234,
    "s": 89.305,
    "l": 63.333
  },
  "oklch": {
    "l": 0.93459,
    "c": 0.18177,
    "h": 112.5
  },
  "luminance": 0.83688
}

Semantic roles & 50–950 ramp

primary

#ECF54E

secondary

#332BBC

accent

#00E60C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170C

muted

#86857F

Preview Lab

Preview with #ECF54E

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

Preview Lab → · Contrast checker → · Palette generator →