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#deee28

a balanced, electric yellow · warm · closest name: Yellow

RGB
222, 238, 40
HSL
65°, 85%, 55%
CMYK
7, 0, 83, 7
Luminance
0.7683

At a glance

Every number on this page in one read: what #deee28 is made of, how bright it looks, and which way it leans.

Hex
#deee28
Hue
65°
yellow
Saturation
85%
electric
Lightness
55%
balanced
Brightness
93%
HSV value
Perceived
86%
weighted brightness
Luminance
0.7683
WCAG relative
Temperature
Warm
29/100 cool
Color family
Yellow
Tone
Electric
Best ink
Black
16.37:1
Closest name
Yellow
ΔE2000 5.9
Where it sits
Hue65° of 360°
Saturation85%
Lightness55%
Temperature
Warm ← → Cool29% cool

Reads warm. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Every format

HEX#deee28
RGBrgb(222, 238, 40)
HSLhsl(65, 85%, 55%)
CMYKcmyk(7%, 0%, 83%, 7%)
LABlab(90.2 -26.5 83.2)
LCHlch(90.2 87.3 107.7)
OKLCHoklch(0.907 0.197 114.7)
Decimal14609960
Display P3color(display-p3 0.871 0.933 0.157)

Copy-ready code

/* CSS */
color: #deee28;
background-color: #deee28;
/* Tailwind (arbitrary) */
class="text-[#deee28] bg-[#deee28]"
/* SCSS */
$brand: #deee28;
/* SwiftUI */
Color(red: 0.871, green: 0.933, blue: 0.157)
/* Android */
Color.parseColor("#deee28")
/* Flutter */
Color(0xFFDEEE28)
/* Python / OpenCV (BGR) */
(40, 238, 222)

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #deee28 · 16.37:1
Use #000000AAA at every size.
Aa
White text · 1.28:1
AA fail · AA large fail · AAA fail
Aa
Black text · 16.37:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #deee28 as text scores 1.28:1 on white and 16.37:1 on black.

Accessibility — WCAG contrast

Aa
#deee28 on white: 1.28:1
AA ✗ fail · AA-large · AAA
Aa
#deee28 on black: 16.37:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #FFE200
deuteranopia · #FFE53E
tritanopia · #EDE0CC

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #deee28 is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FCFCF2
#F8FAE5
#F3F7C5
#EFF797
#E7F363
#deee28
#D2E312
#AFBD0F
#8C970C
#666D0D
#3F4408
Base = 500Lightest = 50 · #FCFCF2Darkest = 950 · #3F4408
:root {
  --brand-50: #FCFCF2;
  --brand-100: #F8FAE5;
  --brand-200: #F3F7C5;
  --brand-300: #EFF797;
  --brand-400: #E7F363;
  --brand-500: #deee28;
  --brand-600: #D2E312;
  --brand-700: #AFBD0F;
  --brand-800: #8C970C;
  --brand-900: #666D0D;
  --brand-950: #3F4408;
  --brand: #deee28;
  --brand-ink: #000000;
}

Colors that work with #deee28

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#FAFAF4
Tinted page background
Border#E9EDC0
Hairlines and dividers
Muted text#949B4B
Captions on the surface
Accent#2347F3
Second voice, not a rival
Dark variant#6D7609
Hover, pressed, headers
Light variant#FBFDE7
Selected rows, tints
Dark surface#232414
Dark-mode background
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

How to use #deee28

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • Thin strokes and 1px borders — they disappear on light UI
  • Pairing with a same-lightness hue — edges vibrate

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#3828EE
Analogous left#EE9B28
Analogous right#7BEE28
Split-complement 1#287BEE
Split-complement 2#9B28EE
Triadic 1#28DEEE
Triadic 2#EE28DE
Tetradic#28EE9B

RGB percentages

Red87.1%
Green93.3%
Blue15.7%

CMYK percentages

Cyan6.7%
Magenta0.0%
Yellow83.2%
Key (black)6.7%

Color previews

#deee28 text on a black background

contrast 16.37:1

Card sample

#deee28 text on a white background

contrast 1.28:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #deee28;
Background color
Panel with #deee28 background
background-color: #deee28;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #deee28;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(222, 238, 40, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(222, 238, 40, 0.45);
Border & gradient
Gradient panel
border: 3px solid #deee28;
background: linear-gradient(135deg, #deee28, #5AEE28);

Monochromatic scale

Palettes built from #deee28

Shades — darker

Tints — lighter

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#deee28 in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
RetailLeisureEnergyWarning systems
Common UI roles
ButtonsLinksFocus statesCharts
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

#deee28, answered

What color is #deee28?

#deee28 is a balanced electric yellow, closest to Yellow (ΔE2000 5.9). It sits at 65° on the hue wheel with 85% saturation and 55% lightness, which reads as warm.

What is the RGB value of #deee28?

rgb(222, 238, 40) — 222 red, 238 green and 40 blue out of 255, or 87.1% / 93.3% / 15.7% by channel.

Is #deee28 a light or a dark color?

It is a light color. Relative luminance is 0.7683 and perceived brightness is 86%, so black text on it reaches 16.37:1.

Should I use black or white text on #deee28?

Black. It scores 16.37:1 against #deee28, versus 1.28:1 for white — AAA at any size.

What is the complementary color of #deee28?

#3828EE sits directly opposite on the wheel. Softer options are the split-complements #287BEE and #9B28EE, which give the same contrast with far less vibration.

What colors go well with #deee28?

For interface work: #FAFAF4 as the surface, #E9EDC0 for borders, #949B4B for secondary text, #2347F3 as an accent and #6D7609 for hover and pressed states. For a palette, the analogous pair #EE9B28 and #7BEE28 stays calm, while #3828EE is the loudest partner.

What is #deee28 in CMYK for printing?

cmyk(7%, 0%, 83%, 7%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #deee28 warm or cool?

Warm — it scores 29 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #EEB628; nudged cooler, #96F026.

Work with #deee28 in the Color Lab