#ECF55F#ECF55F

#ECF55F is a very light, vivid yellow. Relative luminance 0.840; OKLCH L 93.6% C 0.170 H 112.5°. Best body text is #000000 at 17.79:1 contrast (WCAG AA passes).

Color values

HEX	#ECF55F
RGB	rgb(236, 245, 95)
HSL	hsl(64, 88%, 67%)
HSV	hsv(64, 61%, 96%)
CMYK	cmyk(3.7%, 0%, 61.2%, 3.9%)
CIE-LAB	lab(93.44, -21.66, 68.92)
CIE-LCH	lch(93.44, 72.24, 107.44°)
OKLab	oklab(93.59% -0.065 0.1571)
OKLCH	oklch(93.59% 0.17 112.5)
XYZ	xyz(69.3119, 83.9654, 23.3800)
Luminance	0.8396 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF55F #685FF5

analogous

#F5B35F #ECF55F #A1F55F

triadic

#ECF55F #5FECF5 #F55FEC

tetradic

#ECF55F #5FF5B3 #685FF5 #F55FA1

square

#ECF55F #5FF5B3 #685FF5 #F55FA1

split-complementary

#ECF55F #5FA1F5 #B35FF5

monochromatic

#C1CD0D #E5F125 #ECF55F #F3F999 #FAFCD2

Accessibility & contrast

On white

1.18

#ECF55F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.79

#ECF55F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF55F

17.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF55F	#FFFFFF	#000000	##000000
##ECF55F	1.00	1.18	17.79	17.79
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.79	21.00	1.00	1.00
##000000	17.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA4C

Deuteranopia (green-blind)

#FFEE69

Tritanopia (blue-blind)

#FBE7D6

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf55f;
/* rgb */ color: rgb(236, 245, 95);
/* oklch */ color: oklch(93.6% 0.170 112.5);

Tailwind

colors: {
  custom: {
    50: '#f5f893',
    500: '#ecf55f',
    950: '#000000',
  },
}

SCSS

$custom: #ecf55f;
$custom-light: #f5f893;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf55f",
  "rgb": {
    "r": 236,
    "g": 245,
    "b": 95
  },
  "hsl": {
    "h": 63.6,
    "s": 88.235,
    "l": 66.667
  },
  "oklch": {
    "l": 0.93594,
    "c": 0.17003,
    "h": 112.5
  },
  "luminance": 0.83964
}

Semantic roles & 50–950 ramp

primary

#ECF55F

secondary

#392FC9

accent

#01E50E

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF55F

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

Preview Lab → · Contrast checker → · Palette generator →