#ECF18F#ECF18F

#ECF18F is a very light, vivid yellow. Relative luminance 0.827; OKLCH L 93.3% C 0.121 H 111.1°. Best body text is #000000 at 17.55:1 contrast (WCAG AA passes).

Color values

HEX	#ECF18F
RGB	rgb(236, 241, 143)
HSL	hsl(63, 78%, 75%)
HSV	hsv(63, 41%, 95%)
CMYK	cmyk(2.1%, 0%, 40.7%, 5.5%)
CIE-LAB	lab(92.90, -15.69, 46.68)
CIE-LCH	lch(92.90, 49.25, 108.58°)
OKLab	oklab(93.33% -0.0436 0.1132)
OKLCH	oklch(93.33% 0.121 111.1)
XYZ	xyz(71.0062, 82.7279, 38.2088)
Luminance	0.8273 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF18F #948FF1

analogous

#F1C58F #ECF18F #BBF18F

triadic

#ECF18F #8FECF1 #F18FEC

tetradic

#ECF18F #8FF1C5 #948FF1 #F18FBB

square

#ECF18F #8FF1C5 #948FF1 #F18FBB

split-complementary

#ECF18F #8FBBF1 #C58FF1

monochromatic

#DAE322 #E3EA59 #ECF18F #F5F8C5 #FAFCE4

Accessibility & contrast

On white

1.20

#ECF18F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.55

#ECF18F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF18F

17.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF18F	#FFFFFF	#000000	##000000
##ECF18F	1.00	1.20	17.55	17.55
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.55	21.00	1.00	1.00
##000000	17.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE987

Deuteranopia (green-blind)

#FFEC94

Tritanopia (blue-blind)

#F8E6D9

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf18f;
/* rgb */ color: rgb(236, 241, 143);
/* oklch */ color: oklch(93.3% 0.121 111.1);

Tailwind

colors: {
  custom: {
    50: '#f3f5b1',
    500: '#ecf18f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf18f;
$custom-light: #f3f5b1;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf18f",
  "rgb": {
    "r": 236,
    "g": 241,
    "b": 143
  },
  "hsl": {
    "h": 63.061,
    "s": 77.778,
    "l": 75.294
  },
  "oklch": {
    "l": 0.93326,
    "c": 0.12127,
    "h": 111.1
  },
  "luminance": 0.82727
}

Semantic roles & 50–950 ramp

primary

#ECF18F

secondary

#5D57CD

accent

#0BDA16

background

#FFFFFD

surface

#FEFEF8

border

#D6D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #ECF18F

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

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