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green · warm

#abcd17

a dark, electric green · warm · closest name: Yellow Green

Token name suggestion: Slate Moss

RGB
171, 205, 23
HSL
71°, 80%, 45%
CMYK
17, 0, 89, 20
Luminance
0.5238

#abcd17 is a dark electric green, 71° on the wheel and 34/100 on the cool side. Put black text on it (11.48:1). As text it scores 1.83:1 on white — use #6A7F0E instead. Nearest name is Yellow Green, nearest Tailwind family is lime.

hsl(71 80% 45%)rgb(171 205 23)Base step 600AAA inkWarm

At a glance

Every number on this page in one read: what #abcd17 is made of, how bright it looks, and which way it leans.

Hex
#abcd17
Hue
71°
green
Saturation
80%
electric
Lightness
45%
dark
Brightness
80%
HSV value
Perceived
72%
weighted brightness
Luminance
0.5238
WCAG relative
Temperature
Warm
34/100 cool
Color family
Green
Tone
Electric
Best ink
Black
11.48:1
Closest name
Yellow Green
ΔE2000 4.1
Chroma
81.2
LCH, 0–130ish
OKLCH L
0.795
perceptual lightness
Tailwind
lime
500 · ΔE 6.5
Web-safe
#99CC00
nearest of 216
Where it sits
Hue71° of 360°
Saturation80%
Lightness45%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #abcd17.

Temperature
Warm ← → Cool34% cool

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

Luminance by channel
Red17%
Green83%
Blue0%

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

Every format

HEX#abcd17
HEX (8-digit)#abcd17ff
RGBrgb(171, 205, 23)
RGBArgba(171, 205, 23, 1)
HSLhsl(71, 80%, 45%)
HSV / HSBhsv(71, 89%, 80%)
HWBhwb(71 9% 20%)
CMYKcmyk(17%, 0%, 89%, 20%)
LABlab(77.5 -32.2 74.5)
LCHlch(77.5 81.2 113.4)
OKLCHoklch(0.795 0.187 121.1)
XYZ (D65)xyz(38.78, 52.38, 8.88)
Decimal11259159
Display P3color(display-p3 0.671 0.804 0.090)
Web-safe#99CC00

Copy-ready code

every platformclick to select
/* CSS */
color: #abcd17;
background-color: #abcd17;
/* CSS custom property */
--brand: #abcd17;
/* Tailwind (arbitrary) */
class="text-[#abcd17] bg-[#abcd17]"
/* SCSS */
$brand: #abcd17;
/* SwiftUI */
Color(red: 0.671, green: 0.804, blue: 0.090)
/* UIKit */
UIColor(red: 0.671, green: 0.804, blue: 0.090, alpha: 1)
/* Android XML */
<color name="brand">#ABCD17</color>
/* Android Compose */
Color(0xFFABCD17)
/* Flutter */
Color(0xFFABCD17)
/* Python / OpenCV (BGR) */
(23, 205, 171)
/* Python / PIL (RGB) */
(171, 205, 23)
/* Java AWT */
new Color(171, 205, 23)
/* .NET */
Color.FromArgb(255, 171, 205, 23)
/* OpenGL / Unity (0–1) */
(0.6706f, 0.8039f, 0.0902f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{171,205,23}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #abcd17 85%, white);
border-color: color-mix(in oklab, #abcd17 40%, transparent);
/* theme-aware in one line */
color: light-dark(#60730D, #E9EED3);
/* relative colour syntax */
--hover: hsl(from #abcd17 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: #FAFCF3;
  --brand-100: #F6F9E6;
  --brand-200: #ECF5C7;
  --brand-300: #E3F49A;
  --brand-400: #D5EE68;
  --brand-500: #C7E835;
  --brand-600: #abcd17;
  --brand-700: #99B715;
  --brand-800: #7A9310;
  --brand-900: #596A10;
  --brand-950: #38420A;
  --brand: #abcd17;
  --brand-ink: #000000;
  --brand-surface: #F9FAF4;
  --brand-border: #E4EDC0;
  --brand-hover: #90AD13;
  --brand-pressed: #758D10;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #212414;
    --brand-ink: #E9EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FAFCF3',
        100: '#F6F9E6',
        200: '#ECF5C7',
        300: '#E3F49A',
        400: '#D5EE68',
        500: '#C7E835',
        600: '#abcd17',
        700: '#99B715',
        800: '#7A9310',
        900: '#596A10',
        950: '#38420A',
        DEFAULT: '#abcd17',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FAFCF3,
  '100': #F6F9E6,
  '200': #ECF5C7,
  '300': #E3F49A,
  '400': #D5EE68,
  '500': #C7E835,
  '600': #abcd17,
  '700': #99B715,
  '800': #7A9310,
  '900': #596A10,
  '950': #38420A,
);
$brand-base: #abcd17;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FAFCF3", "$type": "color" },
      "100": { "$value": "#F6F9E6", "$type": "color" },
      "200": { "$value": "#ECF5C7", "$type": "color" },
      "300": { "$value": "#E3F49A", "$type": "color" },
      "400": { "$value": "#D5EE68", "$type": "color" },
      "500": { "$value": "#C7E835", "$type": "color" },
      "600": { "$value": "#abcd17", "$type": "color" },
      "700": { "$value": "#99B715", "$type": "color" },
      "800": { "$value": "#7A9310", "$type": "color" },
      "900": { "$value": "#596A10", "$type": "color" },
      "950": { "$value": "#38420A", "$type": "color" }
    },
    "brandInk": { "$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 #abcd17 · 11.48:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.83:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.48:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #abcd17 as text scores 1.83:1 on white and 11.48:1 on black.
Best tinted ink on it, if plain black or white feels flat: #60730D at 2.90:1.

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
#6A7F0E · 4.51:1
AA on white−17% L
#6A7F0E
The quick fox
#4F5F0B · 7.06:1
AAA on white−24% L
#4F5F0B
The quick fox
#abcd17 · 11.48:1
AA on blackalready passes
#abcd17
The quick fox
#abcd17 · 11.48:1
AAA on blackalready passes
#abcd17

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #859F12 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
#abcd17 on white: 1.83:1
AA ✗ fail · AA-large · AAA
Aa
#abcd17 on black: 11.48:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #abcd17 as text on that neutral, and that neutral as text on #abcd17.

NeutralRatioBoth directions
White1.83:1AaAa
Slate 501.75:1AaAa
Slate 1001.67:1AaAa
Slate 2001.48:1AaAa
Slate 3001.23:1AaAa
Slate 4001.40:1AaAa
Slate 5002.60:1AaAa
Slate 6004.14:1AaAa
Slate 7005.66:1AaAa
Slate 8007.99:1AaAa
Slate 9009.76:1AaAa
Black11.48:1AaAa
Colour vision deficiency
true color
protanopia · #DAC000
deuteranopia · #D6C030
tritanopia · #B5C2AF

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. #abcd17 is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FAFCF3
#F6F9E6
#ECF5C7
#E3F49A
#D5EE68
#C7E835
#abcd17
#99B715
#7A9310
#596A10
#38420A
Base = 600Lightest = 50 · #FAFCF3Darkest = 950 · #38420AText 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 0.047 121.1);
  --brand-100: oklch(0.94 0.075 121.1);
  --brand-200: oklch(0.88 0.112 121.1);
  --brand-300: oklch(0.80 0.146 121.1);
  --brand-400: oklch(0.72 0.172 121.1);
  --brand-500: oklch(0.64 0.187 121.1);
  --brand-600: oklch(0.56 0.187 121.1);
  --brand-700: oklch(0.48 0.175 121.1);
  --brand-800: oklch(0.40 0.157 121.1);
  --brand-900: oklch(0.32 0.131 121.1);
  --brand-950: oklch(0.24 0.103 121.1);
}

Colors that work with #abcd17

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#F9FAF4
Tinted page background
Border#E4EDC0
Hairlines and dividers
Muted text#8C9B4B
Captions on the surface
Accent#121FD2
Second voice, not a rival
Dark variant#60730D
Hover, pressed, headers
Light variant#F9FCE8
Selected rows, tints
Dark surface#212414
Dark-mode background
Hover#90AD13
One step down in lightness
Pressed#758D10
Two steps down
Disabled#B6BD97
Chroma pulled out
Focus ring#C2EC0D
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 #abcd17

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
  • Headers, footers and dark-mode surfaces
  • 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
  • Black text placed on it
  • 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 #60730D
Safe as a 1px border on white
No — use #859F12

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 low lightness adds weight and formality.

Worth knowing

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

Reads as
  • FormalityHigh
  • EnergyHigh
  • Weight55/100
  • TemperatureWarm
  • ApproachabilityHigh

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#3917CD
Analogous left#CD9417
Analogous right#50CD17
Split-complement 1#1750CD
Split-complement 2#9417CD
Triadic 1#17ABCD
Triadic 2#CD17AB
Tetradic#17CD94
On the wheel
Base+30°−30°+120°+240°+180°71°

#abcd17 sits at 71°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.1%
Green80.4%
Blue9.0%
R · 0–255
171
0xab
G · 0–255
205
0xcd
B · 0–255
23
0x17

CMYK percentages

Cyan16.6%
Magenta0.0%
Yellow88.8%
Key (black)19.6%

Total ink coverage is 125%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#abcd17 text on a black background

contrast 11.48:1

Card sample

#abcd17 text on a white background

contrast 1.83:1

Card sample

#abcd17 on grey

1.67:1

#abcd17 on its own surface

1.74:1

#abcd17 on its dark surface

8.65:1

CSS3 live lab

Text font color

The quick brown fox

color: #abcd17;
Background color
Panel with #abcd17 background
background-color: #abcd17;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #abcd17;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(171, 205, 23, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(171, 205, 23, 0.45);
Border & gradient
Gradient panel
border: 3px solid #abcd17;
background: linear-gradient(135deg, #abcd17, #32CD17);
Gradient text

Gradient headline

background: linear-gradient(90deg, #abcd17, #17CD2A);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #abcd17;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #abcd17;
caret-color: #abcd17;
Left rule
Pull quote or callout
border-left: 4px solid #abcd17;
Ring + tint
Selected chip
background: #F9FCE8;
box-shadow: inset 0 0 0 2px #abcd17;
Conic badge
68%
background: conic-gradient(#abcd17 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #abcd17 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(171, 205, 23, 0.5)
rgb(171 205 23 / 50%)
#abcd1780
hsl(71 80% 45% / 50%)
color-mix(in srgb, #abcd17 50%, transparent)
Alpha8-digit hexFlat on white
10%#abcd171a#F7FAE8
20%#abcd1733#EEF5D1
40%#abcd1766#DDEBA2
60%#abcd1799#CDE174
80%#abcd17cc#BCD745

Gradients from #abcd17

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, #C8E938, #abcd17 45%, #60730D);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #abcd17, #1EB114);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #abcd17, #3917CD);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #CFEC54 0%, #abcd17 45%, #60730D 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F9FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #E89F2F 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #4BE61D 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #60730D 0%, transparent 65%), #abcd17;

Monochromatic scale

Palettes built from #abcd17

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.

#abcd17 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 11.48:1.

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.

#abcd17, answered

What color is #abcd17?

#abcd17 is a dark electric green, closest to Yellow Green (ΔE2000 4.1). It sits at 71° on the hue wheel with 80% saturation and 45% lightness, which reads as warm.

What is the RGB value of #abcd17?

rgb(171, 205, 23) — 171 red, 205 green and 23 blue out of 255, or 67.1% / 80.4% / 9% by channel.

What is #abcd17 in HSL and HSV?

hsl(71, 80%, 45%) and hsv(71, 89%, 80%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #abcd17 a light or a dark color?

It is a light color. Relative luminance is 0.5238 and perceived brightness is 72%, so black text on it reaches 11.48:1.

Should I use black or white text on #abcd17?

Black. It scores 11.48:1 against #abcd17, versus 1.83:1 for white — AAA at any size.

Is #abcd17 accessible on a white background?

#abcd17 on white scores 1.83:1, which fails WCAG AA at every size. Darken it to #6A7F0E to reach 4.5:1, or #4F5F0B for 7:1.

What is the complementary color of #abcd17?

#3917CD sits directly opposite on the wheel. Softer options are the split-complements #1750CD and #9417CD, which give the same contrast with far less vibration.

What colors go well with #abcd17?

For interface work: #F9FAF4 as the surface, #E4EDC0 for borders, #8C9B4B for secondary text, #121FD2 as an accent and #60730D for hover and pressed states. For a palette, the analogous pair #CD9417 and #50CD17 stays calm, while #3917CD is the loudest partner.

What is #abcd17 in CMYK for printing?

cmyk(17%, 0%, 89%, 20%). 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 #abcd17 warm or cool?

Warm — it scores 34 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #CDAC17; nudged cooler, #68CF15.

Which Tailwind color is closest to #abcd17?

The lime family — its 500 step is #84cc16, ΔE2000 6.5 away. That is a visible difference, so define #abcd17 as a custom token rather than reaching for the built-in.

How do I use #abcd17 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#abcd17] or text-[#abcd17], 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 #abcd17 with 50% opacity?

rgba(171, 205, 23, 0.5), or #abcd1780 in eight-digit hex. Over white that composites to #D5E68B; over black, #56670C.

Is #abcd17 a web-safe color?

No. The nearest web-safe colour is #99CC00, ΔE2000 3 away. The palette only matters for legacy displays and some email clients now.

What does the color #abcd17 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 #abcd17?

The safest is same-hue elevation: linear-gradient(135deg, #C8E938, #abcd17 45%, #60730D). For more colour, a short hue run to #1EB114 keeps it rich without turning muddy.

Work with #abcd17 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #abcd17 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.