#ECF57C#ECF57C

#ECF57C is a very light, vivid yellow. Relative luminance 0.846; OKLCH L 93.9% C 0.145 H 112.7°. Best body text is #000000 at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#ECF57C
RGB	rgb(236, 245, 124)
HSL	hsl(64, 86%, 72%)
HSV	hsv(64, 49%, 96%)
CMYK	cmyk(3.7%, 0%, 49.4%, 3.9%)
CIE-LAB	lab(93.71, -19.45, 56.65)
CIE-LCH	lch(93.71, 59.90, 108.95°)
OKLab	oklab(93.9% -0.0559 0.134)
OKLCH	oklch(93.9% 0.145 112.7)
XYZ	xyz(70.8839, 84.5942, 31.6591)
Luminance	0.8459 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF57C #857CF5

analogous

#F5C27C #ECF57C #AFF57C

triadic

#ECF57C #7CECF5 #F57CEC

tetradic

#ECF57C #7CF5C2 #857CF5 #F57CAF

square

#ECF57C #7CF5C2 #857CF5 #F57CAF

split-complementary

#ECF57C #7CAFF5 #C27CF5

monochromatic

#D5E511 #E4F143 #ECF57C #F4F9B5 #FBFDE3

Accessibility & contrast

On white

1.17

#ECF57C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.92

#ECF57C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF57C

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF57C	#FFFFFF	#000000	##000000
##ECF57C	1.00	1.17	17.92	17.92
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.92	21.00	1.00	1.00
##000000	17.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB71

Deuteranopia (green-blind)

#FFEE82

Tritanopia (blue-blind)

#F9E9D9

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf57c;
/* rgb */ color: rgb(236, 245, 124);
/* oklch */ color: oklch(93.9% 0.145 112.7);

Tailwind

colors: {
  custom: {
    50: '#f4f8a5',
    500: '#ecf57c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf57c;
$custom-light: #f4f8a5;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf57c",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 124
  },
  "hsl": {
    "h": 64.463,
    "s": 85.816,
    "l": 72.353
  },
  "oklch": {
    "l": 0.93899,
    "c": 0.14518,
    "h": 112.7
  },
  "luminance": 0.84593
}

Semantic roles & 50–950 ramp

primary

#ECF57C

secondary

#4F45D1

accent

#03E214

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF57C

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

Preview Lab → · Contrast checker → · Palette generator →