#ECFF5F#ECFF5F

#ECFF5F is a very light, vivid yellow. Relative luminance 0.902; OKLCH L 95.7% C 0.181 H 115.7°. Best body text is #000000 at 19.04:1 contrast (WCAG AA passes).

Color values

HEX	#ECFF5F
RGB	rgb(236, 255, 95)
HSL	hsl(67, 100%, 69%)
HSV	hsv(67, 63%, 100%)
CMYK	cmyk(7.5%, 0%, 62.7%, 0%)
CIE-LAB	lab(96.07, -26.39, 71.72)
CIE-LCH	lch(96.07, 76.42, 110.20°)
OKLab	oklab(95.71% -0.0783 0.163)
OKLCH	oklch(95.71% 0.181 115.7)
XYZ	xyz(72.4193, 90.1801, 24.4158)
Luminance	0.9018 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFF5F #725FFF

analogous

#FFC25F #ECFF5F #9CFF5F

triadic

#ECFF5F #5FECFF #FF5FEC

tetradic

#ECFF5F #5FFFC2 #725FFF #FF5F9C

square

#ECFF5F #5FFFC2 #725FFF #FF5F9C

split-complementary

#ECFF5F #5F9CFF #C25FFF

monochromatic

#C9E400 #E5FF22 #ECFF5F #F3FF9C #FBFFD9

Accessibility & contrast

On white

1.10

#ECFF5F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.04

#ECFF5F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFF5F

19.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFF5F	#FFFFFF	#000000	##000000
##ECFF5F	1.00	1.10	19.04	19.04
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.04	21.00	1.00	1.00
##000000	19.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF34A

Deuteranopia (green-blind)

#FFF56A

Tritanopia (blue-blind)

#FAF1DE

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #ecff5f;
/* rgb */ color: rgb(236, 255, 95);
/* oklch */ color: oklch(95.7% 0.181 115.7);

Tailwind

colors: {
  custom: {
    50: '#f5ff93',
    500: '#ecff5f',
    950: '#000000',
  },
}

SCSS

$custom: #ecff5f;
$custom-light: #f5ff93;
$custom-dark: #000000;

JSON

{
  "hex": "#ecff5f",
  "rgb": {
    "r": 236,
    "g": 255,
    "b": 95
  },
  "hsl": {
    "h": 67.125,
    "s": 100,
    "l": 68.627
  },
  "oklch": {
    "l": 0.95705,
    "c": 0.18085,
    "h": 115.7
  },
  "luminance": 0.90179
}

Semantic roles & 50–950 ramp

primary

#ECFF5F

secondary

#3E29D9

accent

#00E61B

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECFF5F

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

Preview Lab → · Contrast checker → · Palette generator →