#ECF587#ECF587

#ECF587 is a very light, vivid yellow. Relative luminance 0.849; OKLCH L 94.0% C 0.134 H 112.8°. Best body text is #000000 at 17.98:1 contrast (WCAG AA passes).

Color values

HEX	#ECF587
RGB	rgb(236, 245, 135)
HSL	hsl(65, 85%, 75%)
HSV	hsv(65, 45%, 96%)
CMYK	cmyk(3.7%, 0%, 44.9%, 3.9%)
CIE-LAB	lab(93.83, -18.44, 51.68)
CIE-LCH	lch(93.83, 54.87, 109.64°)
OKLab	oklab(94.04% -0.0521 0.1239)
OKLCH	oklch(94.04% 0.134 112.8)
XYZ	xyz(71.6187, 84.8881, 35.5292)
Luminance	0.8489 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF587 #9087F5

analogous

#F5C787 #ECF587 #B5F587

triadic

#ECF587 #87ECF5 #F587EC

tetradic

#ECF587 #87F5C7 #9087F5 #F587B5

square

#ECF587 #87F5C7 #9087F5 #F587B5

split-complementary

#ECF587 #87B5F5 #C787F5

monochromatic

#DAEC16 #E3F04F #ECF587 #F5FABF #FBFDE3

Accessibility & contrast

On white

1.17

#ECF587 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.98

#ECF587 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF587

17.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF587	#FFFFFF	#000000	##000000
##ECF587	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)

#FFEC7E

Deuteranopia (green-blind)

#FFEF8C

Tritanopia (blue-blind)

#F8EADB

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf587;
/* rgb */ color: rgb(236, 245, 135);
/* oklch */ color: oklch(94.0% 0.134 112.8);

Tailwind

colors: {
  custom: {
    50: '#f4f8ac',
    500: '#ecf587',
    950: '#000000',
  },
}

SCSS

$custom: #ecf587;
$custom-light: #f4f8ac;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf587",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 135
  },
  "hsl": {
    "h": 64.909,
    "s": 84.615,
    "l": 74.51
  },
  "oklch": {
    "l": 0.94042,
    "c": 0.13437,
    "h": 112.8
  },
  "luminance": 0.84887
}

Semantic roles & 50–950 ramp

primary

#ECF587

secondary

#594ED2

accent

#04E116

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF587

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

Preview Lab → · Contrast checker → · Palette generator →