#F3FF4E#F3FF4E

#F3FF4E is a very light, vivid yellow. Relative luminance 0.911; OKLCH L 96.1% C 0.190 H 113.3°. Best body text is #000000 at 19.23:1 contrast (WCAG AA passes).

Color values

HEX	#F3FF4E
RGB	rgb(243, 255, 78)
HSL	hsl(64, 100%, 65%)
HSV	hsv(64, 69%, 100%)
CMYK	cmyk(4.7%, 0%, 69.4%, 0%)
CIE-LAB	lab(96.46, -24.57, 78.55)
CIE-LCH	lch(96.46, 82.30, 107.37°)
OKLab	oklab(96.11% -0.0752 0.1747)
OKLCH	oklch(96.11% 0.19 113.3)
XYZ	xyz(74.0995, 91.1263, 20.8920)
Luminance	0.9113 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3FF4E #5A4EFF

analogous

#FFB34E #F3FF4E #9AFF4E

triadic

#F3FF4E #4EF3FF #FF4EF3

tetradic

#F3FF4E #4EFFB3 #5A4EFF #FF4E9A

square

#F3FF4E #4EFFB3 #5A4EFF #FF4E9A

split-complementary

#F3FF4E #4E9AFF #B34EFF

monochromatic

#C4D300 #EFFF11 #F3FF4E #F7FF8B #FBFFC8

Accessibility & contrast

On white

1.09

#F3FF4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.23

#F3FF4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3FF4E

19.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3FF4E	#FFFFFF	#000000	##000000
##F3FF4E	1.00	1.09	19.23	19.23
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.23	21.00	1.00	1.00
##000000	19.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF32F

Deuteranopia (green-blind)

#FFF75C

Tritanopia (blue-blind)

#FFF0DC

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #f3ff4e;
/* rgb */ color: rgb(243, 255, 78);
/* oklch */ color: oklch(96.1% 0.190 113.3);

Tailwind

colors: {
  custom: {
    50: '#fbff8a',
    500: '#f3ff4e',
    950: '#000000',
  },
}

SCSS

$custom: #f3ff4e;
$custom-light: #fbff8a;
$custom-dark: #000000;

JSON

{
  "hex": "#f3ff4e",
  "rgb": {
    "r": 243,
    "g": 255,
    "b": 78
  },
  "hsl": {
    "h": 64.068,
    "s": 100,
    "l": 65.294
  },
  "oklch": {
    "l": 0.96106,
    "c": 0.19017,
    "h": 113.3
  },
  "luminance": 0.91125
}

Semantic roles & 50–950 ramp

primary

#F3FF4E

secondary

#3024CD

accent

#00E610

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #F3FF4E

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

Preview Lab → · Contrast checker → · Palette generator →