#ECFC63#ECFC63

#ECFC63 is a very light, vivid yellow. Relative luminance 0.884; OKLCH L 95.1% C 0.175 H 114.8°. Best body text is #000000 at 18.67:1 contrast (WCAG AA passes).

Color values

HEX	#ECFC63
RGB	rgb(236, 252, 99)
HSL	hsl(66, 96%, 69%)
HSV	hsv(66, 61%, 99%)
CMYK	cmyk(6.3%, 0%, 60.7%, 1.2%)
CIE-LAB	lab(95.31, -24.72, 69.31)
CIE-LCH	lch(95.31, 73.59, 109.63°)
OKLab	oklab(95.1% -0.0733 0.1585)
OKLCH	oklch(95.1% 0.175 114.8)
XYZ	xyz(71.6562, 88.3557, 25.0815)
Luminance	0.8835 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFC63 #7363FC

analogous

#FCC063 #ECFC63 #A0FC63

triadic

#ECFC63 #63ECFC #FC63EC

tetradic

#ECFC63 #63FCC0 #7363FC #FC63A0

square

#ECFC63 #63FCC0 #7363FC #FC63A0

split-complementary

#ECFC63 #63A0FC #C063FC

monochromatic

#C9E004 #E5FB27 #ECFC63 #F3FD9F #FBFEDB

Accessibility & contrast

On white

1.12

#ECFC63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.67

#ECFC63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFC63

18.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFC63	#FFFFFF	#000000	##000000
##ECFC63	1.00	1.12	18.67	18.67
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.67	21.00	1.00	1.00
##000000	18.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF050

Deuteranopia (green-blind)

#FFF36D

Tritanopia (blue-blind)

#FAEEDC

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecfc63;
/* rgb */ color: rgb(236, 252, 99);
/* oklch */ color: oklch(95.1% 0.175 114.8);

Tailwind

colors: {
  custom: {
    50: '#f5fd95',
    500: '#ecfc63',
    950: '#000000',
  },
}

SCSS

$custom: #ecfc63;
$custom-light: #f5fd95;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfc63",
  "rgb": {
    "r": 236,
    "g": 252,
    "b": 99
  },
  "hsl": {
    "h": 66.275,
    "s": 96.226,
    "l": 68.824
  },
  "oklch": {
    "l": 0.95105,
    "c": 0.17457,
    "h": 114.8
  },
  "luminance": 0.88355
}

Semantic roles & 50–950 ramp

primary

#ECFC63

secondary

#3F2DD6

accent

#00E618

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFC63

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

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