Aureolin (#FDEE00)

The hex code for Aureolin is #FDEE00. It is rgb(253, 238, 0) in RGB, hsl(56, 100%, 50%) in HSL, and about cmyk(0%, 6%, 100%, 1%) in CMYK — a mid-tone yellow. Black text is the more readable choice on this background.

#FDEE00

HEX#FDEE00

RGBrgb(253, 238, 0)

HSLhsl(56, 100%, 50%)

HSVhsv(56, 100%, 99%)

CMYKcmyk(0%, 6%, 100%, 1%)

OKLCHoklch(93.1% 0.198 105)

LABlab(93.08% -8.80 90.20)

LCHlch(93.08% 90.63 95.57)

Colors Closest to Aureolin

Aureolin is a registered color name. These are the named colors nearest to it, measured as CIE76 distance in CIELAB — a perceptual scale, so the ordering matches what the eye sees rather than how close the raw RGB numbers happen to sit.

Canary Yellow#FFEF00ΔE 0.68 Yellow Rose#FFF000ΔE 0.89 Middle Yellow#FFEB00ΔE 2.32 Cadmium Yellow#FFF600ΔE 3.96 Lemon#FFF700ΔE 4.51 Titanium Yellow#EEE600ΔE 5.12

Browse the full index of named colors A-Z or every yellow in the library.

#FDEE00 Channel Values

How Aureolin breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 253 · G 238 · B 0	8-bit channels as sent to the display
HSL	H 56° · S 100% · L 50%	Easiest model for building lighter and darker variants
HSV	H 56° · S 100% · V 99%	Matches the picker in most design tools
CMYK	C 0% · M 6% · Y 100% · K 1%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	1.21:1 vs white · 17.41:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Aureolin background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text1.21:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text17.41:1AA normal ✓AA large ✓AAA normal ✓

Need a specific ratio against another background? Open #FDEE00 in the contrast checker.

Colors That Go With Aureolin

Pairings derived from color-wheel relationships. The complementary color sits opposite Aureolin; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of Aureolin

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #FDEE00.

How Aureolin Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#FDEE00

Protanopia#F1F100

Protanomaly#F6F000

Deuteranopia#F3F300

Deuteranomaly#F7F100

Tritanopia#FFE0E0

Tritanomaly#FFE6B3

Achromatopsia#EAEAEA

Test a full palette in the color blindness simulator.

Using #FDEE00 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--aureolin: #FDEE00;

CSS backgroundbackground-color: #FDEE00;

Tailwind configcolors: { 'aureolin': '#FDEE00' }

SwiftUIColor(red: 0.992, green: 0.933, blue: 0.000)

Android XML<color name="aureolin">#FDEE00</color>

SVG fillfill="#FDEE00"

More Yellow Colors

Aureolin sits in the yellowfamily. These are its neighbours across that family's full range, each with its own breakdown.

fdf6e7 fdcc0d fdfd96 fdc700 fdfded fdbe02 fdfdf1 fdb900 fdff00 fcfcf3 fecb00 fcfce8 ffd230 fff48f ffff33 1f1f00 585819 876308 b2b300 cccc00 e1ad21 eded5e f3e5ab f8f8e7

#FDEE00 Frequently Asked Questions

What is the hex code for Aureolin?

The hex code for Aureolin is #FDEE00. That is rgb(253, 238, 0) in RGB, hsl(56, 100%, 50%) in HSL, and approximately cmyk(0%, 6%, 100%, 1%) in CMYK.

What is the RGB value of #FDEE00?

#FDEE00 is rgb(253, 238, 0) — red 253, green 238, and blue 0 on the 0-255 scale.

What is the CMYK value of #FDEE00?

#FDEE00 converts to approximately cmyk(0%, 6%, 100%, 1%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #FDEE00 be black or white?

Black text is the more readable choice. #FDEE00 scores 1.21:1 against white and 17.41:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #FDEE00 as a CSS color keyword?

No. #FDEE00 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is yellow (#FFFF00) at a CIE76 distance of 8.89, which is clearly related but distinguishable side by side.

Open Aureolin in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every yellow in the color library, the guide to shades of yellow, or the full color library.