#ECF28B#ECF28B

#ECF28B is a very light, vivid yellow. Relative luminance 0.832; OKLCH L 93.5% C 0.127 H 111.5°. Best body text is #000000 at 17.64:1 contrast (WCAG AA passes).

Color values

HEX	#ECF28B
RGB	rgb(236, 242, 139)
HSL	hsl(63, 80%, 75%)
HSV	hsv(63, 43%, 95%)
CMYK	cmyk(2.5%, 0%, 42.6%, 5.1%)
CIE-LAB	lab(93.10, -16.59, 48.87)
CIE-LCH	lch(93.10, 51.61, 108.75°)
OKLab	oklab(93.48% -0.0465 0.1179)
OKLCH	oklch(93.48% 0.127 111.5)
XYZ	xyz(71.0054, 83.2024, 36.7403)
Luminance	0.8320 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF28B #918BF2

analogous

#F2C58B #ECF28B #B9F28B

triadic

#ECF28B #8BECF2 #F28BEC

tetradic

#ECF28B #8BF2C5 #918BF2 #F28BB9

square

#ECF28B #8BF2C5 #918BF2 #F28BB9

split-complementary

#ECF28B #8BB9F2 #C58BF2

monochromatic

#DAE61D #E3EC54 #ECF28B #F5F8C2 #FAFCE3

Accessibility & contrast

On white

1.19

#ECF28B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.64

#ECF28B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF28B

17.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF28B	#FFFFFF	#000000	##000000
##ECF28B	1.00	1.19	17.64	17.64
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.64	21.00	1.00	1.00
##000000	17.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA83

Deuteranopia (green-blind)

#FFED90

Tritanopia (blue-blind)

#F8E7D9

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf28b;
/* rgb */ color: rgb(236, 242, 139);
/* oklch */ color: oklch(93.5% 0.127 111.5);

Tailwind

colors: {
  custom: {
    50: '#f4f6ae',
    500: '#ecf28b',
    950: '#000000',
  },
}

SCSS

$custom: #ecf28b;
$custom-light: #f4f6ae;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf28b",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 139
  },
  "hsl": {
    "h": 63.495,
    "s": 79.845,
    "l": 74.706
  },
  "oklch": {
    "l": 0.93475,
    "c": 0.12669,
    "h": 111.5
  },
  "luminance": 0.83201
}

Semantic roles & 50–950 ramp

primary

#ECF28B

secondary

#5A53CE

accent

#09DC16

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF28B

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

Preview Lab → · Contrast checker → · Palette generator →