#ECF143#ECF143

#ECF143 is a very light, vivid yellow. Relative luminance 0.811; OKLCH L 92.5% C 0.184 H 111.2°. Best body text is #000000 at 17.23:1 contrast (WCAG AA passes).

Color values

HEX	#ECF143
RGB	rgb(236, 241, 67)
HSL	hsl(62, 86%, 60%)
HSV	hsv(62, 72%, 95%)
CMYK	cmyk(2.1%, 0%, 72.2%, 5.5%)
CIE-LAB	lab(92.20, -21.25, 77.93)
CIE-LCH	lch(92.20, 80.78, 105.25°)
OKLab	oklab(92.55% -0.0665 0.1718)
OKLCH	oklch(92.55% 0.184 111.2)
XYZ	xyz(67.0628, 81.1505, 17.4400)
Luminance	0.8115 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF143 #4843F1

analogous

#F19F43 #ECF143 #95F143

triadic

#ECF143 #43ECF1 #F143EC

tetradic

#ECF143 #43F19F #4843F1 #F14395

square

#ECF143 #43F19F #4843F1 #F14395

split-complementary

#ECF143 #4395F1 #9F43F1

monochromatic

#A8AD0D #E0E611 #ECF143 #F2F57C #F8F9B5

Accessibility & contrast

On white

1.22

#ECF143 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.23

#ECF143 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF143

17.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF143	#FFFFFF	#000000	##000000
##ECF143	1.00	1.22	17.23	17.23
#FFFFFF	1.22	1.00	21.00	21.00
#000000	17.23	21.00	1.00	1.00
##000000	17.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE61F

Deuteranopia (green-blind)

#FFEB51

Tritanopia (blue-blind)

#FCE2D0

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #ecf143;
/* rgb */ color: rgb(236, 241, 67);
/* oklch */ color: oklch(92.5% 0.184 111.2);

Tailwind

colors: {
  custom: {
    50: '#f6f583',
    500: '#ecf143',
    950: '#000000',
  },
}

SCSS

$custom: #ecf143;
$custom-light: #f6f583;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf143",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 67
  },
  "hsl": {
    "h": 61.724,
    "s": 86.139,
    "l": 60.392
  },
  "oklch": {
    "l": 0.92546,
    "c": 0.18423,
    "h": 111.2
  },
  "luminance": 0.81149
}

Semantic roles & 50–950 ramp

primary

#ECF143

secondary

#2F2BAD

accent

#03E309

background

#FFFFFC

surface

#FFFEF3

border

#D7D6CD

text

#18170C

muted

#86857F

Preview Lab

Preview with #ECF143

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

Preview Lab → · Contrast checker → · Palette generator →