#ECFB4F#ECFB4F

#ECFB4F is a very light, vivid yellow. Relative luminance 0.874; OKLCH L 94.7% C 0.187 H 114.3°. Best body text is #000000 at 18.48:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB4F
RGB	rgb(236, 251, 79)
HSL	hsl(65, 96%, 65%)
HSV	hsv(65, 69%, 98%)
CMYK	cmyk(6%, 0%, 68.5%, 1.6%)
CIE-LAB	lab(94.90, -25.43, 76.49)
CIE-LCH	lch(94.90, 80.61, 108.39°)
OKLab	oklab(94.73% -0.0771 0.1707)
OKLCH	oklch(94.73% 0.187 114.3)
XYZ	xyz(70.5025, 87.3930, 20.5502)
Luminance	0.8739 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB4F #5E4FFB

analogous

#FBB44F #ECFB4F #96FB4F

triadic

#ECFB4F #4FECFB #FB4FEC

tetradic

#ECFB4F #4FFBB4 #5E4FFB #FB4F96

square

#ECFB4F #4FFBB4 #5E4FFB #FB4F96

split-complementary

#ECFB4F #4F96FB #B44FFB

monochromatic

#BACB05 #E6FA13 #ECFB4F #F2FC8B #F9FEC7

Accessibility & contrast

On white

1.14

#ECFB4F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.48

#ECFB4F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB4F

18.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB4F	#FFFFFF	#000000	##000000
##ECFB4F	1.00	1.14	18.48	18.48
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.48	21.00	1.00	1.00
##000000	18.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF33

Deuteranopia (green-blind)

#FFF25C

Tritanopia (blue-blind)

#FBEDD9

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecfb4f;
/* rgb */ color: rgb(236, 251, 79);
/* oklch */ color: oklch(94.7% 0.187 114.3);

Tailwind

colors: {
  custom: {
    50: '#f6fc8a',
    500: '#ecfb4f',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb4f;
$custom-light: #f6fc8a;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb4f",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 79
  },
  "hsl": {
    "h": 65.233,
    "s": 95.556,
    "l": 64.706
  },
  "oklch": {
    "l": 0.94734,
    "c": 0.18733,
    "h": 114.3
  },
  "luminance": 0.87392
}

Semantic roles & 50–950 ramp

primary

#ECFB4F

secondary

#3527C7

accent

#00E614

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFB4F

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

Preview Lab → · Contrast checker → · Palette generator →