#ECF453#ECF453

#ECF453 is a very light, vivid yellow. Relative luminance 0.832; OKLCH L 93.3% C 0.178 H 112.1°. Best body text is #000000 at 17.63:1 contrast (WCAG AA passes).

Color values

HEX	#ECF453
RGB	rgb(236, 244, 83)
HSL	hsl(63, 88%, 64%)
HSV	hsv(63, 66%, 96%)
CMYK	cmyk(3.3%, 0%, 66%, 4.3%)
CIE-LAB	lab(93.08, -21.89, 73.22)
CIE-LCH	lch(93.08, 76.42, 106.65°)
OKLab	oklab(93.29% -0.0669 0.1644)
OKLCH	oklch(93.29% 0.178 112.1)
XYZ	xyz(68.5061, 83.1603, 20.6247)
Luminance	0.8316 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF453 #5B53F4

analogous

#F4AB53 #ECF453 #9CF453

triadic

#ECF453 #53ECF4 #F453EC

tetradic

#ECF453 #53F4AB #5B53F4 #F4539C

square

#ECF453 #53F4AB #5B53F4 #F4539C

split-complementary

#ECF453 #539CF4 #AB53F4

monochromatic

#B7C00C #E6F019 #ECF453 #F2F88D #F9FBC6

Accessibility & contrast

On white

1.19

#ECF453 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.63

#ECF453 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF453

17.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF453	#FFFFFF	#000000	##000000
##ECF453	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)

#FFE93B

Deuteranopia (green-blind)

#FFED5E

Tritanopia (blue-blind)

#FBE6D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf453;
/* rgb */ color: rgb(236, 244, 83);
/* oklch */ color: oklch(93.3% 0.178 112.1);

Tailwind

colors: {
  custom: {
    50: '#f6f78c',
    500: '#ecf453',
    950: '#000000',
  },
}

SCSS

$custom: #ecf453;
$custom-light: #f6f78c;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf453",
  "rgb": {
    "r": 236,
    "g": 244,
    "b": 83
  },
  "hsl": {
    "h": 62.981,
    "s": 87.978,
    "l": 64.118
  },
  "oklch": {
    "l": 0.93285,
    "c": 0.17752,
    "h": 112.1
  },
  "luminance": 0.83159
}

Semantic roles & 50–950 ramp

primary

#ECF453

secondary

#342DBE

accent

#01E50C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF453

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

Preview Lab → · Contrast checker → · Palette generator →