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green · cool

#45fd8c

a balanced, electric green · cool · closest name: Spring Green

Token name suggestion: True Moss

RGB
69, 253, 140
HSL
143°, 98%, 63%
CMYK
73, 0, 45, 1
Luminance
0.7341

#45fd8c is a balanced electric green, 143° on the wheel and 72/100 on the cool side. Put black text on it (15.68:1). As text it scores 1.34:1 on white — use #018936 instead. Nearest name is Spring Green, nearest Tailwind family is green.

hsl(143 98% 63%)rgb(69 253 140)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #45fd8c is made of, how bright it looks, and which way it leans.

Hex
#45fd8c
Hue
143°
green
Saturation
98%
electric
Lightness
63%
balanced
Brightness
99%
HSV value
Perceived
80%
weighted brightness
Luminance
0.7341
WCAG relative
Temperature
Cool
72/100 cool
Color family
Green
Tone
Electric
Best ink
Black
15.68:1
Closest name
Spring Green
ΔE2000 2
Chroma
80.6
LCH, 0–130ish
OKLCH L
0.879
perceptual lightness
Tailwind
green
500 · ΔE 13
Web-safe
#33FF99
nearest of 216
Where it sits
Hue143° of 360°
Saturation98%
Lightness63%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #45fd8c.

Temperature
Warm ← → Cool72% cool

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

Luminance by channel
Red2%
Green96%
Blue3%

Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.

Every format

HEX#45fd8c
HEX (8-digit)#45fd8cff
RGBrgb(69, 253, 140)
RGBArgba(69, 253, 140, 1)
HSLhsl(143, 98%, 63%)
HSV / HSBhsv(143, 73%, 99%)
HWBhwb(143 27% 1%)
CMYKcmyk(73%, 0%, 45%, 1%)
LABlab(88.6 -69.3 41.2)
LCHlch(88.6 80.6 149.3)
OKLCHoklch(0.879 0.212 151.5)
XYZ (D65)xyz(42.31, 73.40, 36.74)
Decimal4586892
Display P3color(display-p3 0.271 0.992 0.549)
Web-safe#33FF99

Copy-ready code

every platformclick to select
/* CSS */
color: #45fd8c;
background-color: #45fd8c;
/* CSS custom property */
--brand: #45fd8c;
/* Tailwind (arbitrary) */
class="text-[#45fd8c] bg-[#45fd8c]"
/* SCSS */
$brand: #45fd8c;
/* SwiftUI */
Color(red: 0.271, green: 0.992, blue: 0.549)
/* UIKit */
UIColor(red: 0.271, green: 0.992, blue: 0.549, alpha: 1)
/* Android XML */
<color name="brand">#45FD8C</color>
/* Android Compose */
Color(0xFF45FD8C)
/* Flutter */
Color(0xFF45FD8C)
/* Python / OpenCV (BGR) */
(140, 253, 69)
/* Python / PIL (RGB) */
(69, 253, 140)
/* Java AWT */
new Color(69, 253, 140)
/* .NET */
Color.FromArgb(255, 69, 253, 140)
/* OpenGL / Unity (0–1) */
(0.2706f, 0.9922f, 0.5490f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{69,253,140}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #45fd8c 85%, white);
border-color: color-mix(in oklab, #45fd8c 40%, transparent);
/* theme-aware in one line */
color: light-dark(#017E32, #D3EEDD);
/* relative colour syntax */
--hover: hsl(from #45fd8c 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.

css custom propertiesclick to select
:root {
  --brand-50: #F1FDF6;
  --brand-100: #E3FCED;
  --brand-200: #C1FBD7;
  --brand-300: #90FEBA;
  --brand-400: #45fd8c;
  --brand-500: #21FD76;
  --brand-600: #03F25F;
  --brand-700: #02CA4F;
  --brand-800: #02A13F;
  --brand-900: #067431;
  --brand-950: #04491E;
  --brand: #45fd8c;
  --brand-ink: #000000;
  --brand-surface: #F4FAF7;
  --brand-border: #C0EDD1;
  --brand-hover: #21FD76;
  --brand-pressed: #03F861;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241A;
    --brand-ink: #D3EEDD;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1FDF6',
        100: '#E3FCED',
        200: '#C1FBD7',
        300: '#90FEBA',
        400: '#45fd8c',
        500: '#21FD76',
        600: '#03F25F',
        700: '#02CA4F',
        800: '#02A13F',
        900: '#067431',
        950: '#04491E',
        DEFAULT: '#45fd8c',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1FDF6,
  '100': #E3FCED,
  '200': #C1FBD7,
  '300': #90FEBA,
  '400': #45fd8c,
  '500': #21FD76,
  '600': #03F25F,
  '700': #02CA4F,
  '800': #02A13F,
  '900': #067431,
  '950': #04491E,
);
$brand-base: #45fd8c;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1FDF6", "$type": "color" },
      "100": { "$value": "#E3FCED", "$type": "color" },
      "200": { "$value": "#C1FBD7", "$type": "color" },
      "300": { "$value": "#90FEBA", "$type": "color" },
      "400": { "$value": "#45fd8c", "$type": "color" },
      "500": { "$value": "#21FD76", "$type": "color" },
      "600": { "$value": "#03F25F", "$type": "color" },
      "700": { "$value": "#02CA4F", "$type": "color" },
      "800": { "$value": "#02A13F", "$type": "color" },
      "900": { "$value": "#067431", "$type": "color" },
      "950": { "$value": "#04491E", "$type": "color" }
    },
    "brandInk": { "$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.

Readable at a glance#000000 on #45fd8c · 15.68:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.34:1
AA fail · AA large fail · AAA fail
Aa
Black text · 15.68:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #45fd8c as text scores 1.34:1 on white and 15.68:1 on black.
Best tinted ink on it, if plain black or white feels flat: #017E32 at 3.89:1.

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.

The quick fox
#018936 · 4.53:1
AA on white−36% L
#018936
The quick fox
#016528 · 7.26:1
AAA on white−43% L
#016528
The quick fox
#45fd8c · 15.68:1
AA on blackalready passes
#45fd8c
The quick fox
#45fd8c · 15.68:1
AAA on blackalready passes
#45fd8c

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #02AC44 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

Aa
#45fd8c on white: 1.34:1
AA ✗ fail · AA-large · AAA
Aa
#45fd8c on black: 15.68:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #45fd8c as text on that neutral, and that neutral as text on #45fd8c.

NeutralRatioBoth directions
White1.34:1AaAa
Slate 501.28:1AaAa
Slate 1001.22:1AaAa
Slate 2001.09:1AaAa
Slate 3001.11:1AaAa
Slate 4001.91:1AaAa
Slate 5003.55:1AaAa
Slate 6005.66:1AaAa
Slate 7007.73:1AaAa
Slate 80010.92:1AaAa
Slate 90013.33:1AaAa
Black15.68:1AaAa
Colour vision deficiency
true color
protanopia · #FEE883
deuteranopia · #E8D894
tritanopia · #00F9E2

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. #45fd8c is pinned to step 400; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F1FDF6
#E3FCED
#C1FBD7
#90FEBA
#45fd8c
#21FD76
#03F25F
#02CA4F
#02A13F
#067431
#04491E
Base = 400Lightest = 50 · #F1FDF6Darkest = 950 · #04491EText step on white = 900
Perceptual ramp — OKLCH

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.

50100200300400500600700800900950
oklch tokensclick to select
:root {
  --brand-50: oklch(0.97 0.053 151.5);
  --brand-100: oklch(0.94 0.085 151.5);
  --brand-200: oklch(0.88 0.127 151.5);
  --brand-300: oklch(0.80 0.165 151.5);
  --brand-400: oklch(0.72 0.195 151.5);
  --brand-500: oklch(0.64 0.212 151.5);
  --brand-600: oklch(0.56 0.212 151.5);
  --brand-700: oklch(0.48 0.199 151.5);
  --brand-800: oklch(0.40 0.178 151.5);
  --brand-900: oklch(0.32 0.148 151.5);
  --brand-950: oklch(0.24 0.117 151.5);
}

Colors that work with #45fd8c

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#F4FAF7
Tinted page background
Border#C0EDD1
Hairlines and dividers
Muted text#4B9B6A
Captions on the surface
Accent#CC00B0
Second voice, not a rival
Dark variant#017E32
Hover, pressed, headers
Light variant#E6FFEF
Selected rows, tints
Dark surface#14241A
Dark-mode background
Hover#21FD76
One step down in lightness
Pressed#03F861
Two steps down
Disabled#D1E1D7
Chroma pulled out
Focus ring#57FF98
Offset from the fill so it reads
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

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.

Buttons and states
Save changesHoverPressedDisabled
OutlineSubtleLinkFocused
Form field
you@company.com

Focus ring uses the light variant so the field still reads as one shape.

Send me product updates
Notice
Your export is ready

The file stays available for seven days. Download it before it expires.

NewBetaDraft
Data
Storage used68%
Acme LtdActive
NorthwindTrial
GlobexActive

How to use #45fd8c

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
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • Status meaning — pair it with an icon or label, never colour alone
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #017E32
Safe as a 1px border on white
No — use #02AC44

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

safegrowingnaturalpermissive

Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed.

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.

Worth knowing

Red/green pairs are the most common colour-blindness failure — never let the two carry meaning alone.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight37/100
  • 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#FD45B6
Analogous left#5AFD45
Analogous right#45FDE8
Split-complement 1#E845FD
Split-complement 2#FD455A
Triadic 1#8C45FD
Triadic 2#FD8C45
Tetradic#455AFD
On the wheel
Base+30°−30°+120°+240°+180°143°

#45fd8c sits at 143°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red27.1%
Green99.2%
Blue54.9%
R · 0–255
69
0x45
G · 0–255
253
0xfd
B · 0–255
140
0x8c

CMYK percentages

Cyan72.7%
Magenta0.0%
Yellow44.7%
Key (black)0.8%

Total ink coverage is 118%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#45fd8c text on a black background

contrast 15.68:1

Card sample

#45fd8c text on a white background

contrast 1.34:1

Card sample

#45fd8c on grey

1.22:1

#45fd8c on its own surface

1.27:1

#45fd8c on its dark surface

12.09:1

CSS3 live lab

Text font color

The quick brown fox

color: #45fd8c;
Background color
Panel with #45fd8c background
background-color: #45fd8c;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #45fd8c;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(69, 253, 140, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(69, 253, 140, 0.45);
Border & gradient
Gradient panel
border: 3px solid #45fd8c;
background: linear-gradient(135deg, #45fd8c, #45F3FD);
Gradient text

Gradient headline

background: linear-gradient(90deg, #45fd8c, #45C5FD);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #45fd8c;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #45fd8c;
caret-color: #45fd8c;
Left rule
Pull quote or callout
border-left: 4px solid #45fd8c;
Ring + tint
Selected chip
background: #E6FFEF;
box-shadow: inset 0 0 0 2px #45fd8c;
Conic badge
68%
background: conic-gradient(#45fd8c 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #45fd8c 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.

alpha in every syntaxclick to select
rgba(69, 253, 140, 0.5)
rgb(69 253 140 / 50%)
#45fd8c80
hsl(143 98% 63% / 50%)
color-mix(in srgb, #45fd8c 50%, transparent)
Alpha8-digit hexFlat on white
10%#45fd8c1a#ECFFF4
20%#45fd8c33#DAFFE8
40%#45fd8c66#B5FED1
60%#45fd8c99#8FFEBA
80%#45fd8ccc#6AFDA3

Gradients from #45fd8c

Six recipes, each built from this hex and shown with the exact CSS that produced it.

Elevation
Same hue, three lightnesses — safe anywhere
background: linear-gradient(135deg, #81FEB1, #45fd8c 45%, #017E32);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #45fd8c, #27DFFD);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #45fd8c, #FD45B6);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #A0FEC4 0%, #45fd8c 45%, #017E32 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF7, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #92FE77 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #63FDF9 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #017E32 0%, transparent 65%), #45fd8c;

Monochromatic scale

Palettes built from #45fd8c

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.

#45fd8c in the real world

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

Industries
SustainabilityFinanceHealth and wellnessAgriculture
Common UI roles
ButtonsLinksFocus statesCharts
Print note

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

On screens

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 15.68:1.

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.

#45fd8c, answered

What color is #45fd8c?

#45fd8c is a balanced electric green, closest to Spring Green (ΔE2000 2). It sits at 143° on the hue wheel with 98% saturation and 63% lightness, which reads as cool.

What is the RGB value of #45fd8c?

rgb(69, 253, 140) — 69 red, 253 green and 140 blue out of 255, or 27.1% / 99.2% / 54.9% by channel.

What is #45fd8c in HSL and HSV?

hsl(143, 98%, 63%) and hsv(143, 73%, 99%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #45fd8c a light or a dark color?

It is a light color. Relative luminance is 0.7341 and perceived brightness is 80%, so black text on it reaches 15.68:1.

Should I use black or white text on #45fd8c?

Black. It scores 15.68:1 against #45fd8c, versus 1.34:1 for white — AAA at any size.

Is #45fd8c accessible on a white background?

#45fd8c on white scores 1.34:1, which fails WCAG AA at every size. Darken it to #018936 to reach 4.5:1, or #016528 for 7:1.

What is the complementary color of #45fd8c?

#FD45B6 sits directly opposite on the wheel. Softer options are the split-complements #E845FD and #FD455A, which give the same contrast with far less vibration.

What colors go well with #45fd8c?

For interface work: #F4FAF7 as the surface, #C0EDD1 for borders, #4B9B6A for secondary text, #CC00B0 as an accent and #017E32 for hover and pressed states. For a palette, the analogous pair #5AFD45 and #45FDE8 stays calm, while #FD45B6 is the loudest partner.

What is #45fd8c in CMYK for printing?

cmyk(73%, 0%, 45%, 1%). 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 #45fd8c warm or cool?

Cool — it scores 72 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #45FD48; nudged cooler, #43FFD1.

Which Tailwind color is closest to #45fd8c?

The green family — its 500 step is #22c55e, ΔE2000 13 away. That is a visible difference, so define #45fd8c as a custom token rather than reaching for the built-in.

How do I use #45fd8c in Tailwind CSS?

Inline it as an arbitrary value with bg-[#45fd8c] or text-[#45fd8c], 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 #45fd8c with 50% opacity?

rgba(69, 253, 140, 0.5), or #45fd8c80 in eight-digit hex. Over white that composites to #A2FEC6; over black, #237F46.

Is #45fd8c a web-safe color?

No. The nearest web-safe colour is #33FF99, ΔE2000 2.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #45fd8c mean?

As a green, it reads safe, growing, natural. Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #45fd8c?

The safest is same-hue elevation: linear-gradient(135deg, #81FEB1, #45fd8c 45%, #017E32). For more colour, a short hue run to #27DFFD keeps it rich without turning muddy.

Work with #45fd8c in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #45fd8c at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.