#ECF58D#ECF58D

#ECF58D is a very light, vivid yellow. Relative luminance 0.851; OKLCH L 94.1% C 0.128 H 112.9°. Best body text is #000000 at 18.01:1 contrast (WCAG AA passes).

Color values

HEX	#ECF58D
RGB	rgb(236, 245, 141)
HSL	hsl(65, 84%, 76%)
HSV	hsv(65, 42%, 96%)
CMYK	cmyk(3.7%, 0%, 42.4%, 3.9%)
CIE-LAB	lab(93.91, -17.84, 48.91)
CIE-LCH	lch(93.91, 52.07, 110.04°)
OKLab	oklab(94.13% -0.0499 0.1181)
OKLCH	oklch(94.13% 0.128 112.9)
XYZ	xyz(72.0531, 85.0619, 37.8170)
Luminance	0.8506 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF58D #968DF5

analogous

#F5CA8D #ECF58D #B8F58D

triadic

#ECF58D #8DECF5 #F58DEC

tetradic

#ECF58D #8DF5CA #968DF5 #F58DB8

square

#ECF58D #8DF5CA #968DF5 #F58DB8

split-complementary

#ECF58D #8DB8F5 #CA8DF5

monochromatic

#D9EB1C #E3F055 #ECF58D #F5FAC5 #FAFDE3

Accessibility & contrast

On white

1.17

#ECF58D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.01

#ECF58D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF58D

18.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF58D	#FFFFFF	#000000	##000000
##ECF58D	1.00	1.17	18.01	18.01
#FFFFFF	1.17	1.00	21.00	21.00
#000000	18.01	21.00	1.00	1.00
##000000	18.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC85

Deuteranopia (green-blind)

#FFEF92

Tritanopia (blue-blind)

#F8EADC

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf58d;
/* rgb */ color: rgb(236, 245, 141);
/* oklch */ color: oklch(94.1% 0.128 112.9);

Tailwind

colors: {
  custom: {
    50: '#f4f8b0',
    500: '#ecf58d',
    950: '#000000',
  },
}

SCSS

$custom: #ecf58d;
$custom-light: #f4f8b0;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf58d",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 141
  },
  "hsl": {
    "h": 65.192,
    "s": 83.871,
    "l": 75.686
  },
  "oklch": {
    "l": 0.94126,
    "c": 0.12818,
    "h": 112.9
  },
  "luminance": 0.85061
}

Semantic roles & 50–950 ramp

primary

#ECF58D

secondary

#5F54D2

accent

#05E018

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171711

muted

#858581

Preview Lab

Preview with #ECF58D

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

Preview Lab → · Contrast checker → · Palette generator →