#ECF588#ECF588

#ECF588 is a very light, vivid yellow. Relative luminance 0.849; OKLCH L 94.1% C 0.133 H 112.8°. Best body text is #000000 at 17.98:1 contrast (WCAG AA passes).

Color values

HEX	#ECF588
RGB	rgb(236, 245, 136)
HSL	hsl(65, 84%, 75%)
HSV	hsv(65, 44%, 96%)
CMYK	cmyk(3.7%, 0%, 44.5%, 3.9%)
CIE-LAB	lab(93.85, -18.34, 51.22)
CIE-LCH	lch(93.85, 54.41, 109.70°)
OKLab	oklab(94.06% -0.0517 0.1229)
OKLCH	oklch(94.06% 0.133 112.8)
XYZ	xyz(71.6894, 84.9164, 35.9017)
Luminance	0.8491 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF588 #9188F5

analogous

#F5C888 #ECF588 #B6F588

triadic

#ECF588 #88ECF5 #F588EC

tetradic

#ECF588 #88F5C8 #9188F5 #F588B6

square

#ECF588 #88F5C8 #9188F5 #F588B6

split-complementary

#ECF588 #88B6F5 #C888F5

monochromatic

#DAEC17 #E3F050 #ECF588 #F5FAC0 #FAFDE3

Accessibility & contrast

On white

1.17

#ECF588 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.98

#ECF588 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF588

17.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF588	#FFFFFF	#000000	##000000
##ECF588	1.00	1.17	17.98	17.98
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.98	21.00	1.00	1.00
##000000	17.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC7F

Deuteranopia (green-blind)

#FFEF8D

Tritanopia (blue-blind)

#F8EADB

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf588;
/* rgb */ color: rgb(236, 245, 136);
/* oklch */ color: oklch(94.1% 0.133 112.8);

Tailwind

colors: {
  custom: {
    50: '#f4f8ad',
    500: '#ecf588',
    950: '#000000',
  },
}

SCSS

$custom: #ecf588;
$custom-light: #f4f8ad;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf588",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 136
  },
  "hsl": {
    "h": 64.954,
    "s": 84.496,
    "l": 74.706
  },
  "oklch": {
    "l": 0.94056,
    "c": 0.13334,
    "h": 112.8
  },
  "luminance": 0.84915
}

Semantic roles & 50–950 ramp

primary

#ECF588

secondary

#5A4FD2

accent

#05E117

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF588

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

Preview Lab → · Contrast checker → · Palette generator →