#ECF447#ECF447

#ECF447 is a very light, vivid yellow. Relative luminance 0.830; OKLCH L 93.2% C 0.185 H 112.1°. Best body text is #000000 at 17.60:1 contrast (WCAG AA passes).

Color values

HEX	#ECF447
RGB	rgb(236, 244, 71)
HSL	hsl(63, 89%, 62%)
HSV	hsv(63, 71%, 96%)
CMYK	cmyk(3.3%, 0%, 70.9%, 4.3%)
CIE-LAB	lab(93.01, -22.50, 77.39)
CIE-LCH	lch(93.01, 80.60, 106.21°)
OKLab	oklab(93.2% -0.0697 0.1713)
OKLCH	oklch(93.2% 0.185 112.1)
XYZ	xyz(68.0823, 82.9908, 18.3924)
Luminance	0.8299 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF447 #4F47F4

analogous

#F4A647 #ECF447 #95F447

triadic

#ECF447 #47ECF4 #F447EC

tetradic

#ECF447 #47F4A6 #4F47F4 #F44795

square

#ECF447 #47F4A6 #4F47F4 #F44795

split-complementary

#ECF447 #4795F4 #A647F4

monochromatic

#AEB60B #E5EF0E #ECF447 #F2F781 #F8FBBA

Accessibility & contrast

On white

1.19

#ECF447 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.60

#ECF447 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF447

17.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF447	#FFFFFF	#000000	##000000
##ECF447	1.00	1.19	17.60	17.60
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.60	21.00	1.00	1.00
##000000	17.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE926

Deuteranopia (green-blind)

#FFED55

Tritanopia (blue-blind)

#FCE5D3

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf447;
/* rgb */ color: rgb(236, 244, 71);
/* oklch */ color: oklch(93.2% 0.185 112.1);

Tailwind

colors: {
  custom: {
    50: '#f6f785',
    500: '#ecf447',
    950: '#000000',
  },
}

SCSS

$custom: #ecf447;
$custom-light: #f6f785;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf447",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 71
  },
  "hsl": {
    "h": 62.775,
    "s": 88.718,
    "l": 61.765
  },
  "oklch": {
    "l": 0.93202,
    "c": 0.18495,
    "h": 112.1
  },
  "luminance": 0.82989
}

Semantic roles & 50–950 ramp

primary

#ECF447

secondary

#312AB5

accent

#00E50B

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170C

muted

#86857F

Preview Lab

Preview with #ECF447

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

Preview Lab → · Contrast checker → · Palette generator →