#F9FF01#F9FF01

#F9FF01 is a very light, highly saturated yellow. Relative luminance 0.917; OKLCH L 96.3% C 0.212 H 111.5°. Best body text is #000000 at 19.33:1 contrast (WCAG AA passes).

Color values

HEX	#F9FF01
RGB	rgb(249, 255, 1)
HSL	hsl(61, 100%, 50%)
HSV	hsv(61, 100%, 100%)
CMYK	cmyk(2.4%, 0%, 99.6%, 0%)
CIE-LAB	lab(96.68, -24.00, 93.87)
CIE-LCH	lch(96.68, 96.89, 104.34°)
OKLab	oklab(96.32% -0.0778 0.1976)
OKLCH	oklch(96.32% 0.212 111.5)
XYZ	xyz(74.8354, 91.6641, 13.7796)
Luminance	0.9166 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F9FF01 #0701FF

analogous

#FF8601 #F9FF01 #7AFF01

triadic

#F9FF01 #01F9FF #FF01F9

tetradic

#F9FF01 #01FF86 #0701FF #FF017A

square

#F9FF01 #01FF86 #0701FF #FF017A

split-complementary

#F9FF01 #017AFF #8601FF

monochromatic

#828600 #BEC300 #F9FF01 #FAFF3E #FCFF7B

Accessibility & contrast

On white

1.09

#F9FF01 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.33

#F9FF01 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F9FF01

19.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F9FF01	#FFFFFF	#000000	##000000
##F9FF01	1.00	1.09	19.33	19.33
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.33	21.00	1.00	1.00
##000000	19.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF300

Deuteranopia (green-blind)

#FFF832

Tritanopia (blue-blind)

#FFEED9

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #f9ff01;
/* rgb */ color: rgb(249, 255, 1);
/* oklch */ color: oklch(96.3% 0.212 111.5);

Tailwind

colors: {
  custom: {
    50: '#ffff73',
    500: '#f9ff01',
    950: '#000000',
  },
}

SCSS

$custom: #f9ff01;
$custom-light: #ffff73;
$custom-dark: #000000;

JSON

{
  "hex": "#f9ff01",
  "rgb": {
    "r": 249,
    "g": 255,
    "b": 1
  },
  "hsl": {
    "h": 61.417,
    "s": 100,
    "l": 50.196
  },
  "oklch": {
    "l": 0.96321,
    "c": 0.21235,
    "h": 111.5
  },
  "luminance": 0.91662
}

Semantic roles & 50–950 ramp

primary

#F9FF01

secondary

#1B198C

accent

#29FF2E

background

#FFFFFB

surface

#FFFFF2

border

#D7D7CC

text

#19170A

muted

#87857D

Preview Lab

Preview with #F9FF01

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

Preview Lab → · Contrast checker → · Palette generator →