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yellow · warm

#bbce02

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

Token name suggestion: Forest Honey

RGB
187, 206, 2
HSL
66°, 98%, 41%
CMYK
9, 0, 99, 19
Luminance
0.5471

#bbce02 is a dark electric yellow, 66° on the wheel and 30/100 on the cool side. Put black text on it (11.94:1). As text it scores 1.76:1 on white — use #727D01 instead. Nearest name is Yellow Green, nearest Tailwind family is lime.

hsl(66 98% 41%)rgb(187 206 2)Base step 700AAA inkWarm

At a glance

Every number on this page in one read: what #bbce02 is made of, how bright it looks, and which way it leans.

Hex
#bbce02
Hue
66°
yellow
Saturation
98%
electric
Lightness
41%
dark
Brightness
81%
HSV value
Perceived
74%
weighted brightness
Luminance
0.5471
WCAG relative
Temperature
Warm
30/100 cool
Color family
Yellow
Tone
Electric
Best ink
Black
11.94:1
Closest name
Yellow Green
ΔE2000 7.5
Chroma
82.8
LCH, 0–130ish
OKLCH L
0.809
perceptual lightness
Tailwind
lime
500 · ΔE 9.9
Web-safe
#CCCC00
nearest of 216
Where it sits
Hue66° of 360°
Saturation98%
Lightness41%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #bbce02.

Temperature
Warm ← → Cool30% 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
Red19%
Green81%
Blue0%

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

Every format

HEX#bbce02
HEX (8-digit)#bbce02ff
RGBrgb(187, 206, 2)
RGBArgba(187, 206, 2, 1)
HSLhsl(66, 98%, 41%)
HSV / HSBhsv(66, 99%, 81%)
HWBhwb(66 1% 19%)
CMYKcmyk(9%, 0%, 99%, 19%)
LABlab(78.9 -26.4 78.5)
LCHlch(78.9 82.8 108.6)
OKLCHoklch(0.809 0.185 116.3)
XYZ (D65)xyz(42.58, 54.71, 8.38)
Decimal12307970
Display P3color(display-p3 0.733 0.808 0.008)
Web-safe#CCCC00

Copy-ready code

every platformclick to select
/* CSS */
color: #bbce02;
background-color: #bbce02;
/* CSS custom property */
--brand: #bbce02;
/* Tailwind (arbitrary) */
class="text-[#bbce02] bg-[#bbce02]"
/* SCSS */
$brand: #bbce02;
/* SwiftUI */
Color(red: 0.733, green: 0.808, blue: 0.008)
/* UIKit */
UIColor(red: 0.733, green: 0.808, blue: 0.008, alpha: 1)
/* Android XML */
<color name="brand">#BBCE02</color>
/* Android Compose */
Color(0xFFBBCE02)
/* Flutter */
Color(0xFFBBCE02)
/* Python / OpenCV (BGR) */
(2, 206, 187)
/* Python / PIL (RGB) */
(187, 206, 2)
/* Java AWT */
new Color(187, 206, 2)
/* .NET */
Color.FromArgb(255, 187, 206, 2)
/* OpenGL / Unity (0–1) */
(0.7333f, 0.8078f, 0.0078f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{187,206,2}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #bbce02 85%, white);
border-color: color-mix(in oklab, #bbce02 40%, transparent);
/* theme-aware in one line */
color: light-dark(#737E01, #ECEED3);
/* relative colour syntax */
--hover: hsl(from #bbce02 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: #FCFDF1;
  --brand-100: #FAFCE3;
  --brand-200: #F6FBC1;
  --brand-300: #F4FE90;
  --brand-400: #EEFD58;
  --brand-500: #E8FD21;
  --brand-600: #DCF202;
  --brand-700: #bbce02;
  --brand-800: #93A202;
  --brand-900: #6A7406;
  --brand-950: #424904;
  --brand: #bbce02;
  --brand-ink: #000000;
  --brand-surface: #FAFAF4;
  --brand-border: #E8EDC0;
  --brand-hover: #9BAB02;
  --brand-pressed: #7B8701;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #232414;
    --brand-ink: #ECEED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FCFDF1',
        100: '#FAFCE3',
        200: '#F6FBC1',
        300: '#F4FE90',
        400: '#EEFD58',
        500: '#E8FD21',
        600: '#DCF202',
        700: '#bbce02',
        800: '#93A202',
        900: '#6A7406',
        950: '#424904',
        DEFAULT: '#bbce02',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FCFDF1,
  '100': #FAFCE3,
  '200': #F6FBC1,
  '300': #F4FE90,
  '400': #EEFD58,
  '500': #E8FD21,
  '600': #DCF202,
  '700': #bbce02,
  '800': #93A202,
  '900': #6A7406,
  '950': #424904,
);
$brand-base: #bbce02;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FCFDF1", "$type": "color" },
      "100": { "$value": "#FAFCE3", "$type": "color" },
      "200": { "$value": "#F6FBC1", "$type": "color" },
      "300": { "$value": "#F4FE90", "$type": "color" },
      "400": { "$value": "#EEFD58", "$type": "color" },
      "500": { "$value": "#E8FD21", "$type": "color" },
      "600": { "$value": "#DCF202", "$type": "color" },
      "700": { "$value": "#bbce02", "$type": "color" },
      "800": { "$value": "#93A202", "$type": "color" },
      "900": { "$value": "#6A7406", "$type": "color" },
      "950": { "$value": "#424904", "$type": "color" }
    },
    "brandInk": { "$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 #bbce02 · 11.94:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.76:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.94:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #bbce02 as text scores 1.76:1 on white and 11.94:1 on black.
Best tinted ink on it, if plain black or white feels flat: #737E01 at 2.53:1.

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
#727D01 · 4.52:1
AA on white−16% L
#727D01
The quick fox
#525A01 · 7.44:1
AAA on white−23% L
#525A01
The quick fox
#bbce02 · 11.94:1
AA on blackalready passes
#bbce02
The quick fox
#bbce02 · 11.94:1
AAA on blackalready passes
#bbce02

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #8D9C01 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
#bbce02 on white: 1.76:1
AA ✗ fail · AA-large · AAA
Aa
#bbce02 on black: 11.94:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #bbce02 as text on that neutral, and that neutral as text on #bbce02.

NeutralRatioBoth directions
White1.76:1AaAa
Slate 501.68:1AaAa
Slate 1001.61:1AaAa
Slate 2001.43:1AaAa
Slate 3001.18:1AaAa
Slate 4001.46:1AaAa
Slate 5002.71:1AaAa
Slate 6004.31:1AaAa
Slate 7005.89:1AaAa
Slate 8008.32:1AaAa
Slate 90010.15:1AaAa
Black11.94:1AaAa
Colour vision deficiency
true color
protanopia · #DDC200
deuteranopia · #DCC428
tritanopia · #C8C1AF

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. #bbce02 is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FCFDF1
#FAFCE3
#F6FBC1
#F4FE90
#EEFD58
#E8FD21
#DCF202
#bbce02
#93A202
#6A7406
#424904
Base = 700Lightest = 50 · #FCFDF1Darkest = 950 · #424904Text 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 0.046 116.3);
  --brand-100: oklch(0.94 0.074 116.3);
  --brand-200: oklch(0.88 0.111 116.3);
  --brand-300: oklch(0.80 0.144 116.3);
  --brand-400: oklch(0.72 0.170 116.3);
  --brand-500: oklch(0.64 0.185 116.3);
  --brand-600: oklch(0.56 0.185 116.3);
  --brand-700: oklch(0.48 0.174 116.3);
  --brand-800: oklch(0.40 0.155 116.3);
  --brand-900: oklch(0.32 0.130 116.3);
  --brand-950: oklch(0.24 0.102 116.3);
}

Colors that work with #bbce02

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#E8EDC0
Hairlines and dividers
Muted text#939B4B
Captions on the surface
Accent#0021D0
Second voice, not a rival
Dark variant#737E01
Hover, pressed, headers
Light variant#FCFFE6
Selected rows, tints
Dark surface#232414
Dark-mode background
Hover#9BAB02
One step down in lightness
Pressed#7B8701
Two steps down
Disabled#B1B58B
Chroma pulled out
Focus ring#CFE400
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 #bbce02

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
  • Thin strokes and 1px borders — they disappear on light UI
  • 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 #737E01
Safe as a 1px border on white
No — use #8D9C01

Meaning and mood

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

optimisticalertcheap-and-cheerfulvisible

The most visible hue at low light levels, which is why it owns warnings, hazard tape and value retail.

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

Almost never passes contrast against white. Treat it as a surface or a marker, not as text.

Reads as
  • FormalityHigh
  • EnergyHigh
  • Weight59/100
  • 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#1502CE
Analogous left#CE7B02
Analogous right#55CE02
Split-complement 1#0255CE
Split-complement 2#7B02CE
Triadic 1#02BBCE
Triadic 2#CE02BB
Tetradic#02CE7B
On the wheel
Base+30°−30°+120°+240°+180°66°

#bbce02 sits at 66°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red73.3%
Green80.8%
Blue0.8%
R · 0–255
187
0xbb
G · 0–255
206
0xce
B · 0–255
2
0x02

CMYK percentages

Cyan9.2%
Magenta0.0%
Yellow99.0%
Key (black)19.2%

Total ink coverage is 127%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#bbce02 text on a black background

contrast 11.94:1

Card sample

#bbce02 text on a white background

contrast 1.76:1

Card sample

#bbce02 on grey

1.61:1

#bbce02 on its own surface

1.68:1

#bbce02 on its dark surface

8.95:1

CSS3 live lab

Text font color

The quick brown fox

color: #bbce02;
Background color
Panel with #bbce02 background
background-color: #bbce02;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #bbce02;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(187, 206, 2, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(187, 206, 2, 0.45);
Border & gradient
Gradient panel
border: 3px solid #bbce02;
background: linear-gradient(135deg, #bbce02, #33CE02);
Gradient text

Gradient headline

background: linear-gradient(90deg, #bbce02, #02CE04);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #bbce02;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #bbce02;
caret-color: #bbce02;
Left rule
Pull quote or callout
border-left: 4px solid #bbce02;
Ring + tint
Selected chip
background: #FCFFE6;
box-shadow: inset 0 0 0 2px #bbce02;
Conic badge
68%
background: conic-gradient(#bbce02 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #bbce02 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(187, 206, 2, 0.5)
rgb(187 206 2 / 50%)
#bbce0280
hsl(66 98% 41% / 50%)
color-mix(in srgb, #bbce02 50%, transparent)
Alpha8-digit hexFlat on white
10%#bbce021a#F8FAE6
20%#bbce0233#F1F5CC
40%#bbce0266#E4EB9A
60%#bbce0299#D6E267
80%#bbce02cc#C9D835

Gradients from #bbce02

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, #E7FD11, #bbce02 45%, #737E01);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #bbce02, #1DB002);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #bbce02, #1502CE);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #EAFD2F 0%, #bbce02 45%, #737E01 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAFAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #FD8406 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #4EEC02 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #737E01 0%, transparent 65%), #bbce02;

Monochromatic scale

Palettes built from #bbce02

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.

#bbce02 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.

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 11.94:1.

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.

#bbce02, answered

What color is #bbce02?

#bbce02 is a dark electric yellow, closest to Yellow Green (ΔE2000 7.5). It sits at 66° on the hue wheel with 98% saturation and 41% lightness, which reads as warm.

What is the RGB value of #bbce02?

rgb(187, 206, 2) — 187 red, 206 green and 2 blue out of 255, or 73.3% / 80.8% / 0.8% by channel.

What is #bbce02 in HSL and HSV?

hsl(66, 98%, 41%) and hsv(66, 99%, 81%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #bbce02 a light or a dark color?

It is a light color. Relative luminance is 0.5471 and perceived brightness is 74%, so black text on it reaches 11.94:1.

Should I use black or white text on #bbce02?

Black. It scores 11.94:1 against #bbce02, versus 1.76:1 for white — AAA at any size.

Is #bbce02 accessible on a white background?

#bbce02 on white scores 1.76:1, which fails WCAG AA at every size. Darken it to #727D01 to reach 4.5:1, or #525A01 for 7:1.

What is the complementary color of #bbce02?

#1502CE sits directly opposite on the wheel. Softer options are the split-complements #0255CE and #7B02CE, which give the same contrast with far less vibration.

What colors go well with #bbce02?

For interface work: #FAFAF4 as the surface, #E8EDC0 for borders, #939B4B for secondary text, #0021D0 as an accent and #737E01 for hover and pressed states. For a palette, the analogous pair #CE7B02 and #55CE02 stays calm, while #1502CE is the loudest partner.

What is #bbce02 in CMYK for printing?

cmyk(9%, 0%, 99%, 19%). 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 #bbce02 warm or cool?

Warm — it scores 30 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #CE9602; nudged cooler, #70D000.

Which Tailwind color is closest to #bbce02?

The lime family — its 500 step is #84cc16, ΔE2000 9.9 away. That is a visible difference, so define #bbce02 as a custom token rather than reaching for the built-in.

How do I use #bbce02 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#bbce02] or text-[#bbce02], 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 #bbce02 with 50% opacity?

rgba(187, 206, 2, 0.5), or #bbce0280 in eight-digit hex. Over white that composites to #DDE781; over black, #5E6701.

Is #bbce02 a web-safe color?

No. The nearest web-safe colour is #CCCC00, ΔE2000 4.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #bbce02 mean?

As a yellow, it reads optimistic, alert, cheap-and-cheerful. The most visible hue at low light levels, which is why it owns warnings, hazard tape and value retail. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #bbce02?

The safest is same-hue elevation: linear-gradient(135deg, #E7FD11, #bbce02 45%, #737E01). For more colour, a short hue run to #1DB002 keeps it rich without turning muddy.

Work with #bbce02 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #bbce02 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.