#ECF45A#ECF45A

#ECF45A is a very light, vivid yellow. Relative luminance 0.833; OKLCH L 93.3% C 0.173 H 112.1°. Best body text is #000000 at 17.65:1 contrast (WCAG AA passes).

Color values

HEX	#ECF45A
RGB	rgb(236, 244, 90)
HSL	hsl(63, 88%, 65%)
HSV	hsv(63, 63%, 96%)
CMYK	cmyk(3.3%, 0%, 63.1%, 4.3%)
CIE-LAB	lab(93.13, -21.49, 70.59)
CIE-LCH	lch(93.13, 73.79, 106.93°)
OKLab	oklab(93.34% -0.0651 0.1599)
OKLCH	oklch(93.34% 0.173 112.1)
XYZ	xyz(68.7901, 83.2740, 22.1206)
Luminance	0.8327 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF45A #625AF4

analogous

#F4AF5A #ECF45A #9FF45A

triadic

#ECF45A #5AECF4 #F45AEC

tetradic

#ECF45A #5AF4AF #625AF4 #F45A9F

square

#ECF45A #5AF4AF #625AF4 #F45A9F

split-complementary

#ECF45A #5A9FF4 #AF5AF4

monochromatic

#BDC60D #E5F021 #ECF45A #F3F893 #F9FCCD

Accessibility & contrast

On white

1.19

#ECF45A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.65

#ECF45A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF45A

17.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF45A	#FFFFFF	#000000	##000000
##ECF45A	1.00	1.19	17.65	17.65
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.65	21.00	1.00	1.00
##000000	17.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE946

Deuteranopia (green-blind)

#FFED64

Tritanopia (blue-blind)

#FBE6D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf45a;
/* rgb */ color: rgb(236, 244, 90);
/* oklch */ color: oklch(93.3% 0.173 112.1);

Tailwind

colors: {
  custom: {
    50: '#f5f790',
    500: '#ecf45a',
    950: '#000000',
  },
}

SCSS

$custom: #ecf45a;
$custom-light: #f5f790;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf45a",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 90
  },
  "hsl": {
    "h": 63.117,
    "s": 87.5,
    "l": 65.49
  },
  "oklch": {
    "l": 0.93341,
    "c": 0.17266,
    "h": 112.1
  },
  "luminance": 0.83272
}

Semantic roles & 50–950 ramp

primary

#ECF45A

secondary

#372FC3

accent

#01E40D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF45A

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

Preview Lab → · Contrast checker → · Palette generator →