#ECF489#ECF489

#ECF489 is a very light, vivid yellow. Relative luminance 0.843; OKLCH L 93.9% C 0.131 H 112.4°. Best body text is #000000 at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#ECF489
RGB	rgb(236, 244, 137)
HSL	hsl(64, 83%, 75%)
HSV	hsv(64, 44%, 96%)
CMYK	cmyk(3.3%, 0%, 43.9%, 4.3%)
CIE-LAB	lab(93.60, -17.76, 50.44)
CIE-LCH	lch(93.60, 53.48, 109.40°)
OKLab	oklab(93.86% -0.05 0.1212)
OKLCH	oklch(93.86% 0.131 112.4)
XYZ	xyz(71.4591, 84.3415, 36.1772)
Luminance	0.8434 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF489 #9189F4

analogous

#F4C789 #ECF489 #B7F489

triadic

#ECF489 #89ECF4 #F489EC

tetradic

#ECF489 #89F4C7 #9189F4 #F489B7

square

#ECF489 #89F4C7 #9189F4 #F489B7

split-complementary

#ECF489 #89B7F4 #C789F4

monochromatic

#DAEA19 #E3EF51 #ECF489 #F5F9C1 #FAFCE3

Accessibility & contrast

On white

1.18

#ECF489 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.87

#ECF489 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF489

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF489	#FFFFFF	#000000	##000000
##ECF489	1.00	1.18	17.87	17.87
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.87	21.00	1.00	1.00
##000000	17.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB80

Deuteranopia (green-blind)

#FFEE8E

Tritanopia (blue-blind)

#F8E9DB

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf489;
/* rgb */ color: rgb(236, 244, 137);
/* oklch */ color: oklch(93.9% 0.131 112.4);

Tailwind

colors: {
  custom: {
    50: '#f4f7ad',
    500: '#ecf489',
    950: '#000000',
  },
}

SCSS

$custom: #ecf489;
$custom-light: #f4f7ad;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf489",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 137
  },
  "hsl": {
    "h": 64.486,
    "s": 82.946,
    "l": 74.706
  },
  "oklch": {
    "l": 0.93861,
    "c": 0.13113,
    "h": 112.4
  },
  "luminance": 0.8434
}

Semantic roles & 50–950 ramp

primary

#ECF489

secondary

#5A50D1

accent

#06DF16

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF489

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

Preview Lab → · Contrast checker → · Palette generator →