#ECF58E#ECF58E

#ECF58E is a very light, vivid yellow. Relative luminance 0.851; OKLCH L 94.1% C 0.127 H 112.9°. Best body text is #000000 at 18.02:1 contrast (WCAG AA passes).

Color values

HEX	#ECF58E
RGB	rgb(236, 245, 142)
HSL	hsl(65, 84%, 76%)
HSV	hsv(65, 42%, 96%)
CMYK	cmyk(3.7%, 0%, 42%, 3.9%)
CIE-LAB	lab(93.92, -17.74, 48.45)
CIE-LCH	lch(93.92, 51.60, 110.11°)
OKLab	oklab(94.14% -0.0495 0.1171)
OKLCH	oklch(94.14% 0.127 112.9)
XYZ	xyz(72.1278, 85.0918, 38.2106)
Luminance	0.8509 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF58E #978EF5

analogous

#F5CA8E #ECF58E #B8F58E

triadic

#ECF58E #8EECF5 #F58EEC

tetradic

#ECF58E #8EF5CA #978EF5 #F58EB8

square

#ECF58E #8EF5CA #978EF5 #F58EB8

split-complementary

#ECF58E #8EB8F5 #CA8EF5

monochromatic

#D9EB1E #E3F056 #ECF58E #F5FAC6 #FAFDE3

Accessibility & contrast

On white

1.17

#ECF58E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.02

#ECF58E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF58E

18.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF58E	#FFFFFF	#000000	##000000
##ECF58E	1.00	1.17	18.02	18.02
#FFFFFF	1.17	1.00	21.00	21.00
#000000	18.02	21.00	1.00	1.00
##000000	18.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC86

Deuteranopia (green-blind)

#FFEF93

Tritanopia (blue-blind)

#F8EADC

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf58e;
/* rgb */ color: rgb(236, 245, 142);
/* oklch */ color: oklch(94.1% 0.127 112.9);

Tailwind

colors: {
  custom: {
    50: '#f3f8b1',
    500: '#ecf58e',
    950: '#000000',
  },
}

SCSS

$custom: #ecf58e;
$custom-light: #f3f8b1;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf58e",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 142
  },
  "hsl": {
    "h": 65.243,
    "s": 83.74,
    "l": 75.882
  },
  "oklch": {
    "l": 0.9414,
    "c": 0.12714,
    "h": 112.9
  },
  "luminance": 0.85091
}

Semantic roles & 50–950 ramp

primary

#ECF58E

secondary

#6055D3

accent

#05E018

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF58E

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

Preview Lab → · Contrast checker → · Palette generator →