#ECFE59#ECFE59

#ECFE59 is a very light, vivid yellow. Relative luminance 0.894; OKLCH L 95.4% C 0.184 H 115.3°. Best body text is #000000 at 18.89:1 contrast (WCAG AA passes).

Color values

HEX	#ECFE59
RGB	rgb(236, 254, 89)
HSL	hsl(67, 99%, 67%)
HSV	hsv(67, 65%, 100%)
CMYK	cmyk(7.1%, 0%, 65%, 0.4%)
CIE-LAB	lab(95.76, -26.29, 73.71)
CIE-LCH	lch(95.76, 78.26, 109.63°)
OKLab	oklab(95.44% -0.0786 0.1664)
OKLCH	oklch(95.44% 0.184 115.3)
XYZ	xyz(71.8388, 89.4389, 22.9283)
Luminance	0.8944 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFE59 #6B59FE

analogous

#FEBD59 #ECFE59 #9AFE59

triadic

#ECFE59 #59ECFE #FE59EC

tetradic

#ECFE59 #59FEBD #6B59FE #FE599A

square

#ECFE59 #59FEBD #6B59FE #FE599A

split-complementary

#ECFE59 #599AFE #BD59FE

monochromatic

#C4DB01 #E5FE1C #ECFE59 #F3FE96 #FAFFD3

Accessibility & contrast

On white

1.11

#ECFE59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.89

#ECFE59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFE59

18.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFE59	#FFFFFF	#000000	##000000
##ECFE59	1.00	1.11	18.89	18.89
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.89	21.00	1.00	1.00
##000000	18.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF242

Deuteranopia (green-blind)

#FFF465

Tritanopia (blue-blind)

#FAF0DD

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #ecfe59;
/* rgb */ color: rgb(236, 254, 89);
/* oklch */ color: oklch(95.4% 0.184 115.3);

Tailwind

colors: {
  custom: {
    50: '#f5fe90',
    500: '#ecfe59',
    950: '#000000',
  },
}

SCSS

$custom: #ecfe59;
$custom-light: #f5fe90;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfe59",
  "rgb": {
    "r": 236,
    "g": 254,
    "b": 89
  },
  "hsl": {
    "h": 66.545,
    "s": 98.802,
    "l": 67.255
  },
  "oklch": {
    "l": 0.95444,
    "c": 0.18399,
    "h": 115.3
  },
  "luminance": 0.89438
}

Semantic roles & 50–950 ramp

primary

#ECFE59

secondary

#3A27D4

accent

#00E619

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFE59

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

Preview Lab → · Contrast checker → · Palette generator →