#ECFD45#ECFD45

#ECFD45 is a very light, vivid yellow. Relative luminance 0.885; OKLCH L 95.1% C 0.195 H 114.8°. Best body text is #000000 at 18.70:1 contrast (WCAG AA passes).

Color values

HEX	#ECFD45
RGB	rgb(236, 253, 69)
HSL	hsl(66, 98%, 63%)
HSV	hsv(66, 73%, 99%)
CMYK	cmyk(6.7%, 0%, 72.7%, 0.8%)
CIE-LAB	lab(95.38, -26.84, 80.30)
CIE-LCH	lch(95.38, 84.66, 108.48°)
OKLab	oklab(95.1% -0.0819 0.1771)
OKLCH	oklch(95.1% 0.195 114.8)
XYZ	xyz(70.7935, 88.5144, 18.9847)
Luminance	0.8851 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFD45 #5645FD

analogous

#FDB245 #ECFD45 #90FD45

triadic

#ECFD45 #45ECFD #FD45EC

tetradic

#ECFD45 #45FDB2 #5645FD #FD4590

square

#ECFD45 #45FDB2 #5645FD #FD4590

split-complementary

#ECFD45 #4590FD #B245FD

monochromatic

#B3C502 #E6FC08 #ECFD45 #F2FE82 #F8FEBE

Accessibility & contrast

On white

1.12

#ECFD45 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.70

#ECFD45 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFD45

18.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFD45	#FFFFFF	#000000	##000000
##ECFD45	1.00	1.12	18.70	18.70
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.70	21.00	1.00	1.00
##000000	18.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF01D

Deuteranopia (green-blind)

#FFF355

Tritanopia (blue-blind)

#FBEEDA

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #ecfd45;
/* rgb */ color: rgb(236, 253, 69);
/* oklch */ color: oklch(95.1% 0.195 114.8);

Tailwind

colors: {
  custom: {
    50: '#f6fd85',
    500: '#ecfd45',
    950: '#000000',
  },
}

SCSS

$custom: #ecfd45;
$custom-light: #f6fd85;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfd45",
  "rgb": {
    "r": 236,
    "g": 253,
    "b": 69
  },
  "hsl": {
    "h": 65.543,
    "s": 97.872,
    "l": 63.137
  },
  "oklch": {
    "l": 0.95095,
    "c": 0.19515,
    "h": 114.8
  },
  "luminance": 0.88513
}

Semantic roles & 50–950 ramp

primary

#ECFD45

secondary

#3324C2

accent

#00E615

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170C

muted

#86857F

Preview Lab

Preview with #ECFD45

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

Preview Lab → · Contrast checker → · Palette generator →