#2efbbc
a balanced, electric cyan · cool · closest name: Aqua Marine
Token name suggestion: True Teal
#2efbbc is a balanced electric cyan, 162° on the wheel and 80/100 on the cool side. Put black text on it (15.64:1). As text it scores 1.34:1 on white — use #03835C instead. Nearest name is Aqua Marine, nearest Tailwind family is emerald.
At a glance
Every number on this page in one read: what #2efbbc is made of, how bright it looks, and which way it leans.
Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #2efbbc.
Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.
Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.
Every format
| HEX | #2efbbc |
| HEX (8-digit) | #2efbbcff |
| RGB | rgb(46, 251, 188) |
| RGBA | rgba(46, 251, 188, 1) |
| HSL | hsl(162, 96%, 58%) |
| HSV / HSB | hsv(162, 82%, 98%) |
| HWB | hwb(162 18% 2%) |
| CMYK | cmyk(82%, 0%, 25%, 2%) |
| LAB | lab(88.5 -61.8 16.9) |
| LCH | lch(88.5 64.1 164.7) |
| OKLCH | oklch(0.880 0.175 165.8) |
| XYZ (D65) | xyz(44.70, 73.20, 59.34) |
| Decimal | 3079100 |
| Display P3 | color(display-p3 0.180 0.984 0.737) |
| Web-safe | #33FFCC |
Copy-ready code
/* CSS */
color: #2efbbc;
background-color: #2efbbc;
/* CSS custom property */
--brand: #2efbbc;
/* Tailwind (arbitrary) */
class="text-[#2efbbc] bg-[#2efbbc]"
/* SCSS */
$brand: #2efbbc;
/* SwiftUI */
Color(red: 0.180, green: 0.984, blue: 0.737)
/* UIKit */
UIColor(red: 0.180, green: 0.984, blue: 0.737, alpha: 1)
/* Android XML */
<color name="brand">#2EFBBC</color>
/* Android Compose */
Color(0xFF2EFBBC)
/* Flutter */
Color(0xFF2EFBBC)
/* Python / OpenCV (BGR) */
(188, 251, 46)
/* Python / PIL (RGB) */
(46, 251, 188)
/* Java AWT */
new Color(46, 251, 188)
/* .NET */
Color.FromArgb(255, 46, 251, 188)
/* OpenGL / Unity (0–1) */
(0.1804f, 0.9843f, 0.7373f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{46,251,188}/* mix without leaving CSS */ background: color-mix(in oklab, #2efbbc 85%, white); border-color: color-mix(in oklab, #2efbbc 40%, transparent); /* theme-aware in one line */ color: light-dark(#027D57, #D3EEE6); /* relative colour syntax */ --hover: hsl(from #2efbbc h s calc(l - 7));
Design tokens
The same ramp in the four formats a team actually needs. Paste one and the whole palette lands with it.
:root {
--brand-50: #F1FDFA;
--brand-100: #E4FCF4;
--brand-200: #C1FAE9;
--brand-300: #91FDDC;
--brand-400: #5AFCCA;
--brand-500: #2efbbc;
--brand-600: #05F0A8;
--brand-700: #04C88C;
--brand-800: #03A070;
--brand-900: #077352;
--brand-950: #044833;
--brand: #2efbbc;
--brand-ink: #000000;
--brand-surface: #F4FAF9;
--brand-border: #C0EDDF;
--brand-hover: #0BFAB1;
--brand-pressed: #04DD9B;
}
@media (prefers-color-scheme: dark) {
:root {
--brand-surface: #14241F;
--brand-ink: #D3EEE6;
}
}theme: {
extend: {
colors: {
brand: {
50: '#F1FDFA',
100: '#E4FCF4',
200: '#C1FAE9',
300: '#91FDDC',
400: '#5AFCCA',
500: '#2efbbc',
600: '#05F0A8',
700: '#04C88C',
800: '#03A070',
900: '#077352',
950: '#044833',
DEFAULT: '#2efbbc',
},
},
},
}$brand: (
'50': #F1FDFA,
'100': #E4FCF4,
'200': #C1FAE9,
'300': #91FDDC,
'400': #5AFCCA,
'500': #2efbbc,
'600': #05F0A8,
'700': #04C88C,
'800': #03A070,
'900': #077352,
'950': #044833,
);
$brand-base: #2efbbc;
$brand-ink: #000000;
@function brand($step) { @return map-get($brand, $step); }{
"color": {
"brand": {
"50": { "$value": "#F1FDFA", "$type": "color" },
"100": { "$value": "#E4FCF4", "$type": "color" },
"200": { "$value": "#C1FAE9", "$type": "color" },
"300": { "$value": "#91FDDC", "$type": "color" },
"400": { "$value": "#5AFCCA", "$type": "color" },
"500": { "$value": "#2efbbc", "$type": "color" },
"600": { "$value": "#05F0A8", "$type": "color" },
"700": { "$value": "#04C88C", "$type": "color" },
"800": { "$value": "#03A070", "$type": "color" },
"900": { "$value": "#077352", "$type": "color" },
"950": { "$value": "#044833", "$type": "color" }
},
"brandInk": { "$value": "#000000", "$type": "color" }
}
}Best text color
Only one of black and white can be right. This is the one, with the number that proves it.
Make it accessible
A contrast checker tells you that you failed. This tells you what to ship instead — same hue, same saturation, lightness moved only as far as WCAG demands.
Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #03A674 is enough for headings on white. Non-text elements such as icons, chart strokes and focus rings also sit at 3:1 under WCAG 2.2 (1.4.11).
Accessibility — WCAG contrast
Contrast is symmetric, so each row covers both directions: #2efbbc as text on that neutral, and that neutral as text on #2efbbc.
| Neutral | Ratio | Verdict | Both directions |
|---|---|---|---|
| White#ffffff | 1.34:1 | AAAA lgAAA | AaAa |
| Slate 50#f8fafc | 1.28:1 | AAAA lgAAA | AaAa |
| Slate 100#f1f5f9 | 1.23:1 | AAAA lgAAA | AaAa |
| Slate 200#e2e8f0 | 1.09:1 | AAAA lgAAA | AaAa |
| Slate 300#cbd5e1 | 1.11:1 | AAAA lgAAA | AaAa |
| Slate 400#94a3b8 | 1.91:1 | AAAA lgAAA | AaAa |
| Slate 500#64748b | 3.54:1 | AAAA lgAAA | AaAa |
| Slate 600#475569 | 5.64:1 | AAAA lgAAA | AaAa |
| Slate 700#334155 | 7.71:1 | AAAA lgAAA | AaAa |
| Slate 800#1e293b | 10.90:1 | AAAA lgAAA | AaAa |
| Slate 900#0f172a | 13.30:1 | AAAA lgAAA | AaAa |
| Black#000000 | 15.64:1 | AAAA lgAAA | AaAa |
Roughly one man in twelve has some form of colour vision deficiency. If any of the three panels above is hard to tell apart from a neighbouring colour in your palette, add a shape, an icon or a label so the meaning does not rest on hue alone.
Color scale — 50 to 950
A Tailwind-shaped ramp built around this exact hex. #2efbbc 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.
The same eleven steps expressed in OKLCH, where equal lightness numbers actually look equally spaced. HSL ramps go muddy in the yellows and washed out in the blues; this one does not. Modern browsers render it natively — the hex ramp above is the fallback.
:root {
--brand-50: oklch(0.97 0.044 165.8);
--brand-100: oklch(0.94 0.070 165.8);
--brand-200: oklch(0.88 0.105 165.8);
--brand-300: oklch(0.80 0.137 165.8);
--brand-400: oklch(0.72 0.161 165.8);
--brand-500: oklch(0.64 0.175 165.8);
--brand-600: oklch(0.56 0.175 165.8);
--brand-700: oklch(0.48 0.165 165.8);
--brand-800: oklch(0.40 0.147 165.8);
--brand-900: oklch(0.32 0.123 165.8);
--brand-950: oklch(0.24 0.096 165.8);
}Colors that work with #2efbbc
Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.
Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.
Lightness flips, hue holds. The accent stays the anchor in both themes.
In real components
The same eight roles, wired into the interface patterns you will actually build with them. Every state below is a computed value, not a mock-up.
Focus ring uses the light variant so the field still reads as one shape.
The file stays available for seven days. Download it before it expires.
How to use #2efbbc
Derived from its contrast, chroma and lightness — not from taste.
- ✓Text and icons on dark surfaces
- ✓Primary buttons and calls to action
- ✓Focus rings, active and selected states
- ✓Brand accents, badges and data highlights
- ✓Chart series and data categories
- ⚠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
Meaning and mood
What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.
Cyan reads as water, air and infrastructure: cool, hygienic, engineered.
At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The mid lightness keeps it versatile in both themes.
At high lightness it disappears into white surfaces and thin strokes vanish entirely.
- FormalityLow
- EnergyHigh
- Weight42/100
- TemperatureCool
- ApproachabilityReserved
Colour associations are cultural and vary by market. Treat these as a starting point for a conversation with your audience, not a finding about them.
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 | #FB2E6D | Directly opposite — maximum tension | |
| Analogous left | #2EFB56 | Neighbour, quieter | |
| Analogous right | #2ED3FB | Neighbour, quieter | |
| Split-complement 1 | #FB2ED3 | Contrast without the clash | |
| Split-complement 2 | #FB562E | Contrast without the clash | |
| Triadic 1 | #BC2EFB | Even thirds — balanced and loud | |
| Triadic 2 | #FBBC2E | Even thirds — balanced and loud | |
| Tetradic | #562EFB | Fourth corner of the square scheme |
#2efbbc sits at 162°. Every dot is a harmony position and links to its own page in the table alongside.
RGB percentages
CMYK percentages
Total ink coverage is 108%. Most commercial presses cap around 300% — above that, sheets stop drying properly.
Color previews
#2efbbc text on a black background
contrast 15.64:1
#2efbbc text on a white background
contrast 1.34:1
#2efbbc on grey
1.23:1
#2efbbc on its own surface
1.27:1
#2efbbc on its dark surface
12.01:1
CSS3 live lab
The quick brown fox
color: #2efbbc;
background-color: #2efbbc;
Glowing headline
text-shadow: 2px 2px 8px #2efbbc;
Soft neon halo
text-shadow: 0 0 14px rgba(46, 251, 188, 0.45);
box-shadow: 0 12px 32px -8px rgba(46, 251, 188, 0.45);
border: 3px solid #2efbbc; background: linear-gradient(135deg, #2efbbc, #2EB1FB);
Gradient headline
background: linear-gradient(90deg, #2efbbc, #2E7EFB); -webkit-background-clip: text; color: transparent;
outline: 2px solid #2efbbc; outline-offset: 3px;
Marked up text
text-decoration-color: #2efbbc; caret-color: #2efbbc;
border-left: 4px solid #2efbbc;
background: #E6FFF7; box-shadow: inset 0 0 0 2px #2efbbc;
background: conic-gradient(#2efbbc 68%, #e2e8f0 0);
Transparency
What each alpha value actually composites to. The top row is #2efbbc over white; the bottom row is the same alpha over a checkerboard, so you can see what survives on a photo or a video.
Bottom row of hexes is the flattened result over white — use those when a design tool refuses transparency, or when you need a solid fallback.
rgba(46, 251, 188, 0.5) rgb(46 251 188 / 50%) #2efbbc80 hsl(162 96% 58% / 50%) color-mix(in srgb, #2efbbc 50%, transparent)
| Alpha | 8-digit hex | Flat on white |
|---|---|---|
| 10% | #2efbbc1a | #EAFFF8 |
| 20% | #2efbbc33 | #D5FEF2 |
| 40% | #2efbbc66 | #ABFDE4 |
| 60% | #2efbbc99 | #82FDD7 |
| 80% | #2efbbccc | #58FCC9 |
Gradients from #2efbbc
Six recipes, each built from this hex and shown with the exact CSS that produced it.
background: linear-gradient(135deg, #6AFCCF, #2efbbc 45%, #027D57);
background: linear-gradient(120deg, #2efbbc, #1092FA);
background: linear-gradient(90deg, #2efbbc, #FB2E6D);
background: radial-gradient(120% 120% at 20% 0%, #88FDD9 0%, #2efbbc 45%, #027D57 100%);
background: linear-gradient(180deg, #F4FAF9, #ffffff);
background: radial-gradient(60% 60% at 15% 20%, #60FC71 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #4CCBFC 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #027D57 0%, transparent 65%), #2efbbc;
Monochromatic scale
Palettes built from #2efbbc
Shades — darker
Tints — lighter
Tones — desaturated
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.
Closest color with a full write-up: Aquamarine (#7fffd4) — ΔE2000 5.7 away, with its history, psychology and brand usage.
#2efbbc in the real world
Where a color in this family tends to land, and the interface roles it is usually asked to play.
Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.
Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.
Usable as-is on a dark surface at 15.64:1.
Explore nearby colors
Small, deliberate steps away from this hex — useful when you are hunting for the version of a colour that finally feels right.
#2efbbc, answered
What color is #2efbbc?
#2efbbc is a balanced electric cyan, closest to Aqua Marine (ΔE2000 5.7). It sits at 162° on the hue wheel with 96% saturation and 58% lightness, which reads as cool.
What is the RGB value of #2efbbc?
rgb(46, 251, 188) — 46 red, 251 green and 188 blue out of 255, or 18% / 98.4% / 73.7% by channel.
What is #2efbbc in HSL and HSV?
hsl(162, 96%, 58%) and hsv(162, 82%, 98%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.
Is #2efbbc a light or a dark color?
It is a light color. Relative luminance is 0.7321 and perceived brightness is 80%, so black text on it reaches 15.64:1.
Should I use black or white text on #2efbbc?
Black. It scores 15.64:1 against #2efbbc, versus 1.34:1 for white — AAA at any size.
Is #2efbbc accessible on a white background?
#2efbbc on white scores 1.34:1, which fails WCAG AA at every size. Darken it to #03835C to reach 4.5:1, or #026547 for 7:1.
What is the complementary color of #2efbbc?
#FB2E6D sits directly opposite on the wheel. Softer options are the split-complements #FB2ED3 and #FB562E, which give the same contrast with far less vibration.
What colors go well with #2efbbc?
For interface work: #F4FAF9 as the surface, #C0EDDF for borders, #4B9B82 for secondary text, #FF2AA0 as an accent and #027D57 for hover and pressed states. For a palette, the analogous pair #2EFB56 and #2ED3FB stays calm, while #FB2E6D is the loudest partner.
What is #2efbbc in CMYK for printing?
cmyk(82%, 0%, 25%, 2%). 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 #2efbbc warm or cool?
Cool — it scores 80 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #2EFB71; nudged cooler, #2CF1FD.
Which Tailwind color is closest to #2efbbc?
The emerald family — its 500 step is #10b981, ΔE2000 15.7 away. That is a visible difference, so define #2efbbc as a custom token rather than reaching for the built-in.
How do I use #2efbbc in Tailwind CSS?
Inline it as an arbitrary value with bg-[#2efbbc] or text-[#2efbbc], or register the whole ramp under theme.extend.colors.brand so you get bg-brand-500 and friends. The generated 50–950 scale on this page is ready to paste into your config.
What is #2efbbc with 50% opacity?
rgba(46, 251, 188, 0.5), or #2efbbc80 in eight-digit hex. Over white that composites to #97FDDE; over black, #177E5E.
Is #2efbbc a web-safe color?
No. The nearest web-safe colour is #33FFCC, ΔE2000 2.9 away. The palette only matters for legacy displays and some email clients now.
What does the color #2efbbc mean?
As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this chroma the effect is amplified — it will dominate whatever sits beside it.
What gradient works with #2efbbc?
The safest is same-hue elevation: linear-gradient(135deg, #6AFCCF, #2efbbc 45%, #027D57). For more colour, a short hue run to #1092FA keeps it rich without turning muddy.
Work with #2efbbc in the Color Lab
Every tool opens with this colour already loaded.
Every value on this page is computed from #2efbbc at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.