#ECF478#ECF478

#ECF478 is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.6% C 0.148 H 112.2°. Best body text is #000000 at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#ECF478
RGB	rgb(236, 244, 120)
HSL	hsl(64, 85%, 71%)
HSV	hsv(64, 51%, 96%)
CMYK	cmyk(3.3%, 0%, 50.8%, 4.3%)
CIE-LAB	lab(93.40, -19.32, 58.12)
CIE-LCH	lch(93.40, 61.25, 108.38°)
OKLab	oklab(93.64% -0.0559 0.1368)
OKLCH	oklch(93.64% 0.148 112.2)
XYZ	xyz(70.3343, 83.8916, 30.2532)
Luminance	0.8389 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF478 #8078F4

analogous

#F4BE78 #ECF478 #AEF478

triadic

#ECF478 #78ECF4 #F478EC

tetradic

#ECF478 #78F4BE #8078F4 #F478AE

square

#ECF478 #78F4BE #8078F4 #F478AE

split-complementary

#ECF478 #78AEF4 #BE78F4

monochromatic

#D2DF12 #E4EF3F #ECF478 #F4F9B1 #FBFDE3

Accessibility & contrast

On white

1.18

#ECF478 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.78

#ECF478 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF478

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF478	#FFFFFF	#000000	##000000
##ECF478	1.00	1.18	17.78	17.78
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.78	21.00	1.00	1.00
##000000	17.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA6C

Deuteranopia (green-blind)

#FFEE7F

Tritanopia (blue-blind)

#F9E8D8

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf478;
/* rgb */ color: rgb(236, 244, 120);
/* oklch */ color: oklch(93.6% 0.148 112.2);

Tailwind

colors: {
  custom: {
    50: '#f4f7a2',
    500: '#ecf478',
    950: '#000000',
  },
}

SCSS

$custom: #ecf478;
$custom-light: #f4f7a2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf478",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 120
  },
  "hsl": {
    "h": 63.871,
    "s": 84.932,
    "l": 71.373
  },
  "oklch": {
    "l": 0.93642,
    "c": 0.1478,
    "h": 112.2
  },
  "luminance": 0.8389
}

Semantic roles & 50–950 ramp

primary

#ECF478

secondary

#4B41CF

accent

#04E112

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF478

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

Preview Lab → · Contrast checker → · Palette generator →