#ECF373#ECF373

#ECF373 is a very light, vivid yellow. Relative luminance 0.832; OKLCH L 93.4% C 0.151 H 111.8°. Best body text is #000000 at 17.63:1 contrast (WCAG AA passes).

Color values

HEX	#ECF373
RGB	rgb(236, 243, 115)
HSL	hsl(63, 84%, 70%)
HSV	hsv(63, 53%, 95%)
CMYK	cmyk(2.9%, 0%, 52.7%, 4.7%)
CIE-LAB	lab(93.09, -19.25, 60.01)
CIE-LCH	lch(93.09, 63.02, 107.78°)
OKLab	oklab(93.38% -0.0562 0.1404)
OKLCH	oklch(93.38% 0.151 111.8)
XYZ	xyz(69.7387, 83.1733, 28.5967)
Luminance	0.8317 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF373 #7A73F3

analogous

#F3BA73 #ECF373 #ACF373

triadic

#ECF373 #73ECF3 #F373EC

tetradic

#ECF373 #73F3BA #7A73F3 #F373AC

square

#ECF373 #73F3BA #7A73F3 #F373AC

split-complementary

#ECF373 #73ACF3 #BA73F3

monochromatic

#CED913 #E4EE3B #ECF373 #F4F8AB #FBFDE3

Accessibility & contrast

On white

1.19

#ECF373 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.63

#ECF373 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF373

17.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF373	#FFFFFF	#000000	##000000
##ECF373	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)

#FFE966

Deuteranopia (green-blind)

#FFED7A

Tritanopia (blue-blind)

#FAE6D6

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf373;
/* rgb */ color: rgb(236, 243, 115);
/* oklch */ color: oklch(93.4% 0.151 111.8);

Tailwind

colors: {
  custom: {
    50: '#f4f69f',
    500: '#ecf373',
    950: '#000000',
  },
}

SCSS

$custom: #ecf373;
$custom-light: #f4f69f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf373",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 115
  },
  "hsl": {
    "h": 63.281,
    "s": 84.211,
    "l": 70.196
  },
  "oklch": {
    "l": 0.93376,
    "c": 0.15125,
    "h": 111.8
  },
  "luminance": 0.83172
}

Semantic roles & 50–950 ramp

primary

#ECF373

secondary

#453DCD

accent

#05E111

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF373

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

Preview Lab → · Contrast checker → · Palette generator →