#ECF289#ECF289

#ECF289 is a very light, vivid yellow. Relative luminance 0.831; OKLCH L 93.4% C 0.129 H 111.5°. Best body text is #000000 at 17.63:1 contrast (WCAG AA passes).

Color values

HEX	#ECF289
RGB	rgb(236, 242, 137)
HSL	hsl(63, 80%, 74%)
HSV	hsv(63, 43%, 95%)
CMYK	cmyk(2.5%, 0%, 43.4%, 5.1%)
CIE-LAB	lab(93.08, -16.79, 49.80)
CIE-LCH	lch(93.08, 52.55, 108.63°)
OKLab	oklab(93.45% -0.0472 0.1198)
OKLCH	oklch(93.45% 0.129 111.5)
XYZ	xyz(70.8606, 83.1445, 35.9777)
Luminance	0.8314 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF289 #8F89F2

analogous

#F2C489 #ECF289 #B7F289

triadic

#ECF289 #89ECF2 #F289EC

tetradic

#ECF289 #89F2C4 #8F89F2 #F289B7

square

#ECF289 #89F2C4 #8F89F2 #F289B7

split-complementary

#ECF289 #89B7F2 #C489F2

monochromatic

#DAE61B #E3EC52 #ECF289 #F5F8C0 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF289 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.63

#ECF289 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF289

17.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF289	#FFFFFF	#000000	##000000
##ECF289	1.00	1.19	17.63	17.63
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.63	21.00	1.00	1.00
##000000	17.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA80

Deuteranopia (green-blind)

#FFED8E

Tritanopia (blue-blind)

#F8E7D9

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf289;
/* rgb */ color: rgb(236, 242, 137);
/* oklch */ color: oklch(93.4% 0.129 111.5);

Tailwind

colors: {
  custom: {
    50: '#f4f6ad',
    500: '#ecf289',
    950: '#000000',
  },
}

SCSS

$custom: #ecf289;
$custom-light: #f4f6ad;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf289",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 137
  },
  "hsl": {
    "h": 63.429,
    "s": 80.153,
    "l": 74.314
  },
  "oklch": {
    "l": 0.93446,
    "c": 0.12877,
    "h": 111.5
  },
  "luminance": 0.83143
}

Semantic roles & 50–950 ramp

primary

#ECF289

secondary

#5851CE

accent

#09DC15

background

#FFFFFD

surface

#FEFEF7

border

#D6D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #ECF289

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

Preview Lab → · Contrast checker → · Palette generator →