#ECFF77#ECFF77

#ECFF77 is a very light, vivid yellow. Relative luminance 0.907; OKLCH L 95.9% C 0.161 H 116.1°. Best body text is #000000 at 19.14:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF77
RGB	rgb(236, 255, 119)
HSL	hsl(68, 100%, 73%)
HSV	hsv(68, 53%, 100%)
CMYK	cmyk(7.5%, 0%, 53.3%, 0%)
CIE-LAB	lab(96.28, -24.65, 61.91)
CIE-LCH	lch(96.28, 66.64, 111.71°)
OKLab	oklab(95.94% -0.0711 0.1449)
OKLCH	oklch(95.94% 0.161 116.1)
XYZ	xyz(73.6830, 90.6857, 31.0717)
Luminance	0.9069 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF77 #8A77FF

analogous

#FFCE77 #ECFF77 #A8FF77

triadic

#ECFF77 #77ECFF #FF77EC

tetradic

#ECFF77 #77FFCE #8A77FF #FF77A8

square

#ECFF77 #77FFCE #8A77FF #FF77A8

split-complementary

#ECFF77 #77A8FF #CE77FF

monochromatic

#D8FC00 #E3FF3A #ECFF77 #F5FFB4 #FBFFE0

Accessibility & contrast

On white

1.10

#ECFF77 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.14

#ECFF77 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF77

19.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF77	#FFFFFF	#000000	##000000
##ECFF77	1.00	1.10	19.14	19.14
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.14	21.00	1.00	1.00
##000000	19.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF46A

Deuteranopia (green-blind)

#FFF57F

Tritanopia (blue-blind)

#F9F3E1

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecff77;
/* rgb */ color: rgb(236, 255, 119);
/* oklch */ color: oklch(95.9% 0.161 116.1);

Tailwind

colors: {
  custom: {
    50: '#f4ffa2',
    500: '#ecff77',
    950: '#000000',
  },
}

SCSS

$custom: #ecff77;
$custom-light: #f4ffa2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff77",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 119
  },
  "hsl": {
    "h": 68.382,
    "s": 100,
    "l": 73.333
  },
  "oklch": {
    "l": 0.95939,
    "c": 0.16144,
    "h": 116.1
  },
  "luminance": 0.90685
}

Semantic roles & 50–950 ramp

primary

#ECFF77

secondary

#543DDD

accent

#00E620

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17180F

muted

#858680

Preview Lab

Preview with #ECFF77

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

Preview Lab → · Contrast checker → · Palette generator →