#ECFB64#ECFB64

#ECFB64 is a very light, vivid yellow. Relative luminance 0.877; OKLCH L 94.9% C 0.173 H 114.5°. Best body text is #000000 at 18.55:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB64
RGB	rgb(236, 251, 100)
HSL	hsl(66, 95%, 69%)
HSV	hsv(66, 60%, 98%)
CMYK	cmyk(6%, 0%, 60.2%, 1.6%)
CIE-LAB	lab(95.05, -24.18, 68.63)
CIE-LCH	lch(95.05, 72.77, 109.41°)
OKLab	oklab(94.9% -0.0717 0.1571)
OKLCH	oklch(94.9% 0.173 114.5)
XYZ	xyz(71.3911, 87.7485, 25.2305)
Luminance	0.8775 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB64 #7364FB

analogous

#FBBF64 #ECFB64 #A1FB64

triadic

#ECFB64 #64ECFB #FB64EC

tetradic

#ECFB64 #64FBBF #7364FB #FB64A1

square

#ECFB64 #64FBBF #7364FB #FB64A1

split-complementary

#ECFB64 #64A1FB #BF64FB

monochromatic

#C9DF06 #E5F928 #ECFB64 #F3FDA0 #FBFEDB

Accessibility & contrast

On white

1.13

#ECFB64 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.55

#ECFB64 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB64

18.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB64	#FFFFFF	#000000	##000000
##ECFB64	1.00	1.13	18.55	18.55
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.55	21.00	1.00	1.00
##000000	18.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF52

Deuteranopia (green-blind)

#FFF26E

Tritanopia (blue-blind)

#FAEEDB

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #ecfb64;
/* rgb */ color: rgb(236, 251, 100);
/* oklch */ color: oklch(94.9% 0.173 114.5);

Tailwind

colors: {
  custom: {
    50: '#f5fc96',
    500: '#ecfb64',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb64;
$custom-light: #f5fc96;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb64",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 100
  },
  "hsl": {
    "h": 65.96,
    "s": 94.969,
    "l": 68.824
  },
  "oklch": {
    "l": 0.94903,
    "c": 0.1727,
    "h": 114.5
  },
  "luminance": 0.87747
}

Semantic roles & 50–950 ramp

primary

#ECFB64

secondary

#3F2ED5

accent

#00E617

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFB64

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

Preview Lab → · Contrast checker → · Palette generator →