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green · neutral

#91cf49

a balanced, vivid green · neutral · closest name: Yellow Green

Token name suggestion: Studio Basil

RGB
145, 207, 73
HSL
88°, 58%, 55%
CMYK
30, 0, 65, 19
Luminance
0.5113

#91cf49 is a balanced vivid green, 88° on the wheel and 48/100 on the cool side. Put black text on it (11.23:1). As text it scores 1.87:1 on white — use #558122 instead. Nearest name is Yellow Green, nearest Tailwind family is lime.

hsl(88 58% 55%)rgb(145 207 73)Base step 500AAA inkNeutral

At a glance

Every number on this page in one read: what #91cf49 is made of, how bright it looks, and which way it leans.

Hex
#91cf49
Hue
88°
green
Saturation
58%
vivid
Lightness
55%
balanced
Brightness
81%
HSV value
Perceived
70%
weighted brightness
Luminance
0.5113
WCAG relative
Temperature
Neutral
48/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
11.23:1
Closest name
Yellow Green
ΔE2000 3.3
Chroma
71.1
LCH, 0–130ish
OKLCH L
0.786
perceptual lightness
Tailwind
lime
500 · ΔE 3.6
Web-safe
#99CC33
nearest of 216
Where it sits
Hue88° of 360°
Saturation58%
Lightness55%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #91cf49.

Temperature
Warm ← → Cool48% cool

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

Luminance by channel
Red12%
Green87%
Blue1%

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

Every format

HEX#91cf49
HEX (8-digit)#91cf49ff
RGBrgb(145, 207, 73)
RGBArgba(145, 207, 73, 1)
HSLhsl(88, 58%, 55%)
HSV / HSBhsv(88, 65%, 81%)
HWBhwb(88 29% 19%)
CMYKcmyk(30%, 0%, 65%, 19%)
LABlab(76.8 -40.8 58.2)
LCHlch(76.8 71.1 125.0)
OKLCHoklch(0.786 0.176 130.7)
XYZ (D65)xyz(35.19, 51.13, 14.32)
Decimal9555785
Display P3color(display-p3 0.569 0.812 0.286)
Web-safe#99CC33

Copy-ready code

every platformclick to select
/* CSS */
color: #91cf49;
background-color: #91cf49;
/* CSS custom property */
--brand: #91cf49;
/* Tailwind (arbitrary) */
class="text-[#91cf49] bg-[#91cf49]"
/* SCSS */
$brand: #91cf49;
/* SwiftUI */
Color(red: 0.569, green: 0.812, blue: 0.286)
/* UIKit */
UIColor(red: 0.569, green: 0.812, blue: 0.286, alpha: 1)
/* Android XML */
<color name="brand">#91CF49</color>
/* Android Compose */
Color(0xFF91CF49)
/* Flutter */
Color(0xFF91CF49)
/* Python / OpenCV (BGR) */
(73, 207, 145)
/* Python / PIL (RGB) */
(145, 207, 73)
/* Java AWT */
new Color(145, 207, 73)
/* .NET */
Color.FromArgb(255, 145, 207, 73)
/* OpenGL / Unity (0–1) */
(0.5686f, 0.8118f, 0.2863f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{145,207,73}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #91cf49 85%, white);
border-color: color-mix(in oklab, #91cf49 40%, transparent);
/* theme-aware in one line */
color: light-dark(#42651B, #E1EED3);
/* relative colour syntax */
--hover: hsl(from #91cf49 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: #F8FBF4;
  --brand-100: #F0F7E9;
  --brand-200: #DFEFCD;
  --brand-300: #C9E8A6;
  --brand-400: #AEDC7A;
  --brand-500: #91cf49;
  --brand-600: #80C233;
  --brand-700: #6AA12B;
  --brand-800: #558122;
  --brand-900: #405E1C;
  --brand-950: #283B12;
  --brand: #91cf49;
  --brand-ink: #000000;
  --brand-surface: #F8FAF4;
  --brand-border: #D8EDC0;
  --brand-hover: #7FC133;
  --brand-pressed: #6DA52B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1D2414;
    --brand-ink: #E1EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F8FBF4',
        100: '#F0F7E9',
        200: '#DFEFCD',
        300: '#C9E8A6',
        400: '#AEDC7A',
        500: '#91cf49',
        600: '#80C233',
        700: '#6AA12B',
        800: '#558122',
        900: '#405E1C',
        950: '#283B12',
        DEFAULT: '#91cf49',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F8FBF4,
  '100': #F0F7E9,
  '200': #DFEFCD,
  '300': #C9E8A6,
  '400': #AEDC7A,
  '500': #91cf49,
  '600': #80C233,
  '700': #6AA12B,
  '800': #558122,
  '900': #405E1C,
  '950': #283B12,
);
$brand-base: #91cf49;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F8FBF4", "$type": "color" },
      "100": { "$value": "#F0F7E9", "$type": "color" },
      "200": { "$value": "#DFEFCD", "$type": "color" },
      "300": { "$value": "#C9E8A6", "$type": "color" },
      "400": { "$value": "#AEDC7A", "$type": "color" },
      "500": { "$value": "#91cf49", "$type": "color" },
      "600": { "$value": "#80C233", "$type": "color" },
      "700": { "$value": "#6AA12B", "$type": "color" },
      "800": { "$value": "#558122", "$type": "color" },
      "900": { "$value": "#405E1C", "$type": "color" },
      "950": { "$value": "#283B12", "$type": "color" }
    },
    "brandInk": { "$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 #91cf49 · 11.23:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.87:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.23:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #91cf49 as text scores 1.87:1 on white and 11.23:1 on black.
Best tinted ink on it, if plain black or white feels flat: #42651B at 3.61:1.

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
#558122 · 4.62:1
AA on white−23% L
#558122
The quick fox
#406019 · 7.23:1
AAA on white−31% L
#406019
The quick fox
#91cf49 · 11.23:1
AA on blackalready passes
#91cf49
The quick fox
#91cf49 · 11.23:1
AAA on blackalready passes
#91cf49

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #6AA12A 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
#91cf49 on white: 1.87:1
AA ✗ fail · AA-large · AAA
Aa
#91cf49 on black: 11.23:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #91cf49 as text on that neutral, and that neutral as text on #91cf49.

NeutralRatioBoth directions
White1.87:1AaAa
Slate 501.79:1AaAa
Slate 1001.71:1AaAa
Slate 2001.52:1AaAa
Slate 3001.26:1AaAa
Slate 4001.37:1AaAa
Slate 5002.54:1AaAa
Slate 6004.05:1AaAa
Slate 7005.53:1AaAa
Slate 8007.82:1AaAa
Slate 9009.54:1AaAa
Black11.23:1AaAa
Colour vision deficiency
true color
protanopia · #D8C038
deuteranopia · #CFBC54
tritanopia · #94C7B3

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. #91cf49 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.

#F8FBF4
#F0F7E9
#DFEFCD
#C9E8A6
#AEDC7A
#91cf49
#80C233
#6AA12B
#558122
#405E1C
#283B12
Base = 500Lightest = 50 · #F8FBF4Darkest = 950 · #283B12Text step on white = 800
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 0.044 130.7);
  --brand-100: oklch(0.94 0.070 130.7);
  --brand-200: oklch(0.88 0.106 130.7);
  --brand-300: oklch(0.80 0.137 130.7);
  --brand-400: oklch(0.72 0.162 130.7);
  --brand-500: oklch(0.64 0.176 130.7);
  --brand-600: oklch(0.56 0.176 130.7);
  --brand-700: oklch(0.48 0.165 130.7);
  --brand-800: oklch(0.40 0.148 130.7);
  --brand-900: oklch(0.32 0.123 130.7);
  --brand-950: oklch(0.24 0.097 130.7);
}

Colors that work with #91cf49

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#F8FAF4
Tinted page background
Border#D8EDC0
Hairlines and dividers
Muted text#769B4B
Captions on the surface
Accent#6344D4
Second voice, not a rival
Dark variant#42651B
Hover, pressed, headers
Light variant#F3FAEB
Selected rows, tints
Dark surface#1D2414
Dark-mode background
Hover#7FC133
One step down in lightness
Pressed#6DA52B
Two steps down
Disabled#C5D1B7
Chroma pulled out
Focus ring#9BDE4F
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 #91cf49

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 #42651B
Safe as a 1px border on white
No — use #6AA12A

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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. 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
  • FormalityMedium
  • EnergyMedium-high
  • Weight45/100
  • TemperatureNeutral
  • ApproachabilityBalanced

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#8749CF
Analogous left#CFCA49
Analogous right#4ECF49
Split-complement 1#494ECF
Split-complement 2#CA49CF
Triadic 1#4991CF
Triadic 2#CF4991
Tetradic#49CFCA
On the wheel
Base+30°−30°+120°+240°+180°88°

#91cf49 sits at 88°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red56.9%
Green81.2%
Blue28.6%
R · 0–255
145
0x91
G · 0–255
207
0xcf
B · 0–255
73
0x49

CMYK percentages

Cyan30.0%
Magenta0.0%
Yellow64.7%
Key (black)18.8%

Total ink coverage is 114%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#91cf49 text on a black background

contrast 11.23:1

Card sample

#91cf49 text on a white background

contrast 1.87:1

Card sample

#91cf49 on grey

1.71:1

#91cf49 on its own surface

1.78:1

#91cf49 on its dark surface

8.54:1

CSS3 live lab

Text font color

The quick brown fox

color: #91cf49;
Background color
Panel with #91cf49 background
background-color: #91cf49;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #91cf49;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(145, 207, 73, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(145, 207, 73, 0.45);
Border & gradient
Gradient panel
border: 3px solid #91cf49;
background: linear-gradient(135deg, #91cf49, #49CF5A);
Gradient text

Gradient headline

background: linear-gradient(90deg, #91cf49, #49CF7C);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #91cf49;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #91cf49;
caret-color: #91cf49;
Left rule
Pull quote or callout
border-left: 4px solid #91cf49;
Ring + tint
Selected chip
background: #F3FAEB;
box-shadow: inset 0 0 0 2px #91cf49;
Conic badge
68%
background: conic-gradient(#91cf49 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #91cf49 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(145, 207, 73, 0.5)
rgb(145 207 73 / 50%)
#91cf4980
hsl(88 58% 55% / 50%)
color-mix(in srgb, #91cf49 50%, transparent)
Alpha8-digit hexFlat on white
10%#91cf491a#F4FAED
20%#91cf4933#E9F5DB
40%#91cf4966#D3ECB6
60%#91cf4999#BDE292
80%#91cf49cc#A7D96D

Gradients from #91cf49

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, #AEDC79, #91cf49 45%, #42651B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #91cf49, #34C553);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #91cf49, #8749CF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #BDE292 0%, #91cf49 45%, #42651B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F8FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #DACD71 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #61D567 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #42651B 0%, transparent 65%), #91cf49;

Monochromatic scale

Palettes built from #91cf49

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.

#91cf49 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

Converts to four-color process without much drama. Proof it anyway.

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 11.23:1.

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.

#91cf49, answered

What color is #91cf49?

#91cf49 is a balanced vivid green, closest to Yellow Green (ΔE2000 3.3). It sits at 88° on the hue wheel with 58% saturation and 55% lightness, which reads as neutral.

What is the RGB value of #91cf49?

rgb(145, 207, 73) — 145 red, 207 green and 73 blue out of 255, or 56.9% / 81.2% / 28.6% by channel.

What is #91cf49 in HSL and HSV?

hsl(88, 58%, 55%) and hsv(88, 65%, 81%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #91cf49 a light or a dark color?

It is a light color. Relative luminance is 0.5113 and perceived brightness is 70%, so black text on it reaches 11.23:1.

Should I use black or white text on #91cf49?

Black. It scores 11.23:1 against #91cf49, versus 1.87:1 for white — AAA at any size.

Is #91cf49 accessible on a white background?

#91cf49 on white scores 1.87:1, which fails WCAG AA at every size. Darken it to #558122 to reach 4.5:1, or #406019 for 7:1.

What is the complementary color of #91cf49?

#8749CF sits directly opposite on the wheel. Softer options are the split-complements #494ECF and #CA49CF, which give the same contrast with far less vibration.

What colors go well with #91cf49?

For interface work: #F8FAF4 as the surface, #D8EDC0 for borders, #769B4B for secondary text, #6344D4 as an accent and #42651B for hover and pressed states. For a palette, the analogous pair #CFCA49 and #4ECF49 stays calm, while #8749CF is the loudest partner.

What is #91cf49 in CMYK for printing?

cmyk(30%, 0%, 65%, 19%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #91cf49 warm or cool?

Neutral — it scores 48 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #C2CF49; nudged cooler, #5ED147.

Which Tailwind color is closest to #91cf49?

The lime family — its 500 step is #84cc16, ΔE2000 3.6 away. That is a visible difference, so define #91cf49 as a custom token rather than reaching for the built-in.

How do I use #91cf49 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#91cf49] or text-[#91cf49], 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 #91cf49 with 50% opacity?

rgba(145, 207, 73, 0.5), or #91cf4980 in eight-digit hex. Over white that composites to #C8E7A4; over black, #496825.

Is #91cf49 a web-safe color?

No. The nearest web-safe colour is #99CC33, ΔE2000 3.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #91cf49 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 #91cf49?

The safest is same-hue elevation: linear-gradient(135deg, #AEDC79, #91cf49 45%, #42651B). For more colour, a short hue run to #34C553 keeps it rich without turning muddy.

Work with #91cf49 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #91cf49 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.