#ECF191#ECF191

#ECF191 is a very light, moderate yellow. Relative luminance 0.828; OKLCH L 93.4% C 0.119 H 111.1°. Best body text is #000000 at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#ECF191
RGB	rgb(236, 241, 145)
HSL	hsl(63, 77%, 76%)
HSV	hsv(63, 40%, 95%)
CMYK	cmyk(2.1%, 0%, 39.8%, 5.5%)
CIE-LAB	lab(92.92, -15.48, 45.74)
CIE-LCH	lch(92.92, 48.29, 108.70°)
OKLab	oklab(93.36% -0.0428 0.1112)
OKLCH	oklch(93.36% 0.119 111.1)
XYZ	xyz(71.1591, 82.7890, 39.0139)
Luminance	0.8279 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF191 #9691F1

analogous

#F1C691 #ECF191 #BCF191

triadic

#ECF191 #91ECF1 #F191EC

tetradic

#ECF191 #91F1C6 #9691F1 #F191BC

square

#ECF191 #91F1C6 #9691F1 #F191BC

split-complementary

#ECF191 #91BCF1 #C691F1

monochromatic

#D9E324 #E3EA5B #ECF191 #F5F8C7 #FAFCE4

Accessibility & contrast

On white

1.20

#ECF191 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.56

#ECF191 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF191

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF191	#FFFFFF	#000000	##000000
##ECF191	1.00	1.20	17.56	17.56
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.56	21.00	1.00	1.00
##000000	17.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE98A

Deuteranopia (green-blind)

#FFEC95

Tritanopia (blue-blind)

#F8E6DA

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf191;
/* rgb */ color: rgb(236, 241, 145);
/* oklch */ color: oklch(93.4% 0.119 111.1);

Tailwind

colors: {
  custom: {
    50: '#f3f5b2',
    500: '#ecf191',
    950: '#000000',
  },
}

SCSS

$custom: #ecf191;
$custom-light: #f3f5b2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf191",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 145
  },
  "hsl": {
    "h": 63.125,
    "s": 77.419,
    "l": 75.686
  },
  "oklch": {
    "l": 0.93356,
    "c": 0.11913,
    "h": 111.1
  },
  "luminance": 0.82788
}

Semantic roles & 50–950 ramp

primary

#ECF191

secondary

#5F59CE

accent

#0CDA17

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF191

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

Preview Lab → · Contrast checker → · Palette generator →