#ECF491#ECF491

#ECF491 is a very light, vivid yellow. Relative luminance 0.846; OKLCH L 94.0% C 0.123 H 112.5°. Best body text is #000000 at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#ECF491
RGB	rgb(236, 244, 145)
HSL	hsl(65, 82%, 76%)
HSV	hsv(65, 41%, 96%)
CMYK	cmyk(3.3%, 0%, 40.6%, 4.3%)
CIE-LAB	lab(93.70, -16.94, 46.73)
CIE-LCH	lch(93.70, 49.70, 109.93°)
OKLab	oklab(93.98% -0.047 0.1134)
OKLCH	oklch(93.98% 0.123 112.5)
XYZ	xyz(72.0544, 84.5797, 39.3123)
Luminance	0.8458 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF491 #9991F4

analogous

#F4CB91 #ECF491 #BBF491

triadic

#ECF491 #91ECF4 #F491EC

tetradic

#ECF491 #91F4CB #9991F4 #F491BB

square

#ECF491 #91F4CB #9991F4 #F491BB

split-complementary

#ECF491 #91BBF4 #CB91F4

monochromatic

#D9E922 #E2EE59 #ECF491 #F6FAC9 #FAFCE3

Accessibility & contrast

On white

1.17

#ECF491 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.92

#ECF491 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF491

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF491	#FFFFFF	#000000	##000000
##ECF491	1.00	1.17	17.92	17.92
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.92	21.00	1.00	1.00
##000000	17.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC89

Deuteranopia (green-blind)

#FFEE96

Tritanopia (blue-blind)

#F7E9DC

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf491;
/* rgb */ color: rgb(236, 244, 145);
/* oklch */ color: oklch(94.0% 0.123 112.5);

Tailwind

colors: {
  custom: {
    50: '#f3f7b3',
    500: '#ecf491',
    950: '#000000',
  },
}

SCSS

$custom: #ecf491;
$custom-light: #f3f7b3;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf491",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 145
  },
  "hsl": {
    "h": 64.848,
    "s": 81.818,
    "l": 76.275
  },
  "oklch": {
    "l": 0.93977,
    "c": 0.12274,
    "h": 112.5
  },
  "luminance": 0.84579
}

Semantic roles & 50–950 ramp

primary

#ECF491

secondary

#6258D2

accent

#07DE19

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF491

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

Preview Lab → · Contrast checker → · Palette generator →