#ECF579#ECF579

#ECF579 is a very light, vivid yellow. Relative luminance 0.845; OKLCH L 93.9% C 0.148 H 112.6°. Best body text is #000000 at 17.90:1 contrast (WCAG AA passes).

Color values

HEX	#ECF579
RGB	rgb(236, 245, 121)
HSL	hsl(64, 86%, 72%)
HSV	hsv(64, 51%, 96%)
CMYK	cmyk(3.7%, 0%, 50.6%, 3.9%)
CIE-LAB	lab(93.68, -19.71, 57.99)
CIE-LCH	lch(93.68, 61.24, 108.78°)
OKLab	oklab(93.86% -0.057 0.1366)
OKLCH	oklch(93.86% 0.148 112.6)
XYZ	xyz(70.6970, 84.5194, 30.6751)
Luminance	0.8452 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF579 #8279F5

analogous

#F5C079 #ECF579 #AEF579

triadic

#ECF579 #79ECF5 #F579EC

tetradic

#ECF579 #79F5C0 #8279F5 #F579AE

square

#ECF579 #79F5C0 #8279F5 #F579AE

split-complementary

#ECF579 #79AEF5 #C079F5

monochromatic

#D3E311 #E4F140 #ECF579 #F4F9B2 #FBFDE3

Accessibility & contrast

On white

1.17

#ECF579 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.90

#ECF579 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF579

17.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF579	#FFFFFF	#000000	##000000
##ECF579	1.00	1.17	17.90	17.90
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.90	21.00	1.00	1.00
##000000	17.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB6D

Deuteranopia (green-blind)

#FFEE80

Tritanopia (blue-blind)

#F9E9D9

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf579;
/* rgb */ color: rgb(236, 245, 121);
/* oklch */ color: oklch(93.9% 0.148 112.6);

Tailwind

colors: {
  custom: {
    50: '#f4f8a3',
    500: '#ecf579',
    950: '#000000',
  },
}

SCSS

$custom: #ecf579;
$custom-light: #f4f8a3;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf579",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 121
  },
  "hsl": {
    "h": 64.355,
    "s": 86.111,
    "l": 71.765
  },
  "oklch": {
    "l": 0.93863,
    "c": 0.14801,
    "h": 112.6
  },
  "luminance": 0.84518
}

Semantic roles & 50–950 ramp

primary

#ECF579

secondary

#4C42D0

accent

#03E313

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF579

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

Preview Lab → · Contrast checker → · Palette generator →