#F5F866#F5F866

#F5F866 is a very light, vivid yellow. Relative luminance 0.875; OKLCH L 95.0% C 0.166 H 110.3°. Best body text is #000000 at 18.50:1 contrast (WCAG AA passes).

Color values

HEX	#F5F866
RGB	rgb(245, 248, 102)
HSL	hsl(61, 91%, 69%)
HSV	hsv(61, 59%, 97%)
CMYK	cmyk(1.2%, 0%, 58.9%, 2.7%)
CIE-LAB	lab(94.95, -19.05, 67.89)
CIE-LCH	lch(94.95, 70.51, 105.68°)
OKLab	oklab(94.99% -0.0575 0.1556)
OKLCH	oklch(94.99% 0.166 110.3)
XYZ	xyz(73.6239, 87.5084, 25.5803)
Luminance	0.8751 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F5F866 #6966F8

analogous

#F8B266 #F5F866 #ACF866

triadic

#F5F866 #66F5F8 #F866F5

tetradic

#F5F866 #66F8B2 #6966F8 #F866AC

square

#F5F866 #66F8B2 #6966F8 #F866AC

split-complementary

#F5F866 #66ACF8 #B266F8

monochromatic

#D5DA0A #F1F52B #F5F866 #F9FBA1 #FDFDDB

Accessibility & contrast

On white

1.14

#F5F866 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.50

#F5F866 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F5F866

18.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F5F866	#FFFFFF	#000000	##000000
##F5F866	1.00	1.14	18.50	18.50
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.50	21.00	1.00	1.00
##000000	18.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE55

Deuteranopia (green-blind)

#FFF36F

Tritanopia (blue-blind)

#FFEAD9

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #f5f866;
/* rgb */ color: rgb(245, 248, 102);
/* oklch */ color: oklch(95.0% 0.166 110.3);

Tailwind

colors: {
  custom: {
    50: '#fbfa97',
    500: '#f5f866',
    950: '#000000',
  },
}

SCSS

$custom: #f5f866;
$custom-light: #fbfa97;
$custom-dark: #000000;

JSON

{
  "hex": "#f5f866",
  "rgb": {
    "r": 245,
    "g": 248,
    "b": 102
  },
  "hsl": {
    "h": 61.233,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.94991,
    "c": 0.16592,
    "h": 110.3
  },
  "luminance": 0.87507
}

Semantic roles & 50–950 ramp

primary

#F5F866

secondary

#3431D2

accent

#00E605

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #F5F866

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

Preview Lab → · Contrast checker → · Palette generator →