HEX
#FFFF00Primary tokenCSS Named Color Reference
Yellow Color Code
Yellow·#FFFF00
Yellow FamilyWarmMid toneHigh saturationoklch(96.8% 0.211 110)
RGB
rgb(255, 255, 0)Screen valuesHSL
hsl(60 100% 50%)Hue and lightnessCMYK
0, 0, 100, 0Print handoffLAB
97, -22, 94Perceptual referenceOKLCH
oklch(96.8% 0.211 110)Modern perceptualYellow is a mid-tone, high-saturation CSS named color at #FFFF00. If you searched for yellow hex code, FFFF00, or yellow RGB, this page gives the exact color value, conversion formats, contrast checks, nearby colors, and links into the lookup and converter workflows.
Best text colorDark text
Body text contrast15.97:1
Best UseAttention markers, highlights, warm backgrounds, and caution-adjacent states
Tonal Scale
100#FFFFD1
300#FFFF8A
500#FFFF2E
600#FFFF00
800#B8B800
Contrast Checks
White text on this color
Buttons, badges, and filled actions.
1.07:1Needs more separation
Dark text on this color
Large headings and selective UI.
15.97:1AAA-level contrast
This color on light surface
Links, borders, and icons on light UI.
1.02:1Needs more separation
Best text colorDark textContrast 15.97:1
Professional Reference
OKLCHoklch(96.8% 0.211 110)
Relative Luminance0.9278
Source TypeCSS Named Color
Classification
Yellow FamilyWarmMid toneHigh saturation
Source Context
Source Type
CSS Named Color
System
CSS
Aliases
Material Yellow A200
Closest Matches
Material Yellow A400Material Lime A200Ant Design Yellow 5
Color Notes
- Yellow is kept as an exact CSS named color for #FFFF00.
- Queries for yellow color code, FFFF00, or yellow RGB usually need the value first, then contrast and implementation context.
Accessibility Matrix
White text on this color
White text placed on the current color.
1.07:1Needs more separation
Dark text on this color
Dark text or headings on the current color.
15.97:1AAA
This color on light surface
Use this color for links, strokes, or icons on light UI.
1.02:1Needs more separation
This color on dark surface
Use this color inside dark shells for strokes, tags, or icons.
15.97:1AAA
Best text colorDark textContrast 15.97:1 · AAA
Where It Works
- Use it for highlights, caution-adjacent labels, warm backgrounds, and attention markers.
- Most yellows need dark text for readable interface copy.
- Pair with charcoal, deep olive, warm neutrals, and controlled orange accents.
Reference Notes
Last Updated
2026-09-03
Source Library
CSS Standard Colors
Methodology
Verified source values + site guidance
Color Notes
Yellow is sourced from the published CSS Standard Colors library and retained here as a searchable reference swatch for product and interface reference work.
Hue Family
Bright ambers and yellows that carry warmth.
Source Collections
CSS Named Colors
Related Colors
Palette Starting Points
Implementation Snippets
:root {
--color-yellow: #FFFF00;
--color-yellow-rgb: 255 255 0;
}class="bg-[#FFFF00] text-white"
class="hover:bg-[#B8B800] ring-1 ring-[#FFFF00]"{
"yellow": "#FFFF00",
"yellowRgb": [255, 255, 0],
"yellowHsl": [60, 100, 50]
}