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yellow · warm

#cfe71b

a balanced, electric yellow · warm · closest name: Yellow

Token name suggestion: Atlas Brass

RGB
207, 231, 27
HSL
67°, 81%, 51%
CMYK
10, 0, 88, 9
Luminance
0.7050

#cfe71b is a balanced electric yellow, 67° on the wheel and 31/100 on the cool side. Put black text on it (15.10:1). As text it scores 1.39:1 on white — use #6E7B0D instead. Nearest name is Yellow, nearest Tailwind family is lime.

hsl(67 81% 51%)rgb(207 231 27)Base step 600AAA inkWarm

At a glance

Every number on this page in one read: what #cfe71b is made of, how bright it looks, and which way it leans.

Hex
#cfe71b
Hue
67°
yellow
Saturation
81%
electric
Lightness
51%
balanced
Brightness
91%
HSV value
Perceived
82%
weighted brightness
Luminance
0.7050
WCAG relative
Temperature
Warm
31/100 cool
Color family
Yellow
Tone
Electric
Best ink
Black
15.10:1
Closest name
Yellow
ΔE2000 8.2
Chroma
87.8
LCH, 0–130ish
OKLCH L
0.880
perceptual lightness
Tailwind
lime
500 · ΔE 12.2
Web-safe
#CCFF33
nearest of 216
Where it sits
Hue67° of 360°
Saturation81%
Lightness51%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #cfe71b.

Temperature
Warm ← → Cool31% 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#cfe71b
HEX (8-digit)#cfe71bff
RGBrgb(207, 231, 27)
RGBArgba(207, 231, 27, 1)
HSLhsl(67, 81%, 51%)
HSV / HSBhsv(67, 88%, 91%)
HWBhwb(67 11% 9%)
CMYKcmyk(10%, 0%, 88%, 9%)
LABlab(87.2 -29.6 82.7)
LCHlch(87.2 87.8 109.7)
OKLCHoklch(0.880 0.199 117.2)
XYZ (D65)xyz(54.51, 70.50, 11.77)
Decimal13625115
Display P3color(display-p3 0.812 0.906 0.106)
Web-safe#CCFF33

Copy-ready code

every platformclick to select
/* CSS */
color: #cfe71b;
background-color: #cfe71b;
/* CSS custom property */
--brand: #cfe71b;
/* Tailwind (arbitrary) */
class="text-[#cfe71b] bg-[#cfe71b]"
/* SCSS */
$brand: #cfe71b;
/* SwiftUI */
Color(red: 0.812, green: 0.906, blue: 0.106)
/* UIKit */
UIColor(red: 0.812, green: 0.906, blue: 0.106, alpha: 1)
/* Android XML */
<color name="brand">#CFE71B</color>
/* Android Compose */
Color(0xFFCFE71B)
/* Flutter */
Color(0xFFCFE71B)
/* Python / OpenCV (BGR) */
(27, 231, 207)
/* Python / PIL (RGB) */
(207, 231, 27)
/* Java AWT */
new Color(207, 231, 27)
/* .NET */
Color.FromArgb(255, 207, 231, 27)
/* OpenGL / Unity (0–1) */
(0.8118f, 0.9059f, 0.1059f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{207,231,27}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #cfe71b 85%, white);
border-color: color-mix(in oklab, #cfe71b 40%, transparent);
/* theme-aware in one line */
color: light-dark(#67730C, #EBEED3);
/* relative colour syntax */
--hover: hsl(from #cfe71b 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: #FBFCF3;
  --brand-100: #F7F9E6;
  --brand-200: #F0F5C6;
  --brand-300: #EAF499;
  --brand-400: #DFEF67;
  --brand-500: #D4EA34;
  --brand-600: #cfe71b;
  --brand-700: #A5B913;
  --brand-800: #849410;
  --brand-900: #606B10;
  --brand-950: #3C430A;
  --brand: #cfe71b;
  --brand-ink: #000000;
  --brand-surface: #FAFAF4;
  --brand-border: #E7EDC0;
  --brand-hover: #B4C915;
  --brand-pressed: #97A912;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #222414;
    --brand-ink: #EBEED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FBFCF3',
        100: '#F7F9E6',
        200: '#F0F5C6',
        300: '#EAF499',
        400: '#DFEF67',
        500: '#D4EA34',
        600: '#cfe71b',
        700: '#A5B913',
        800: '#849410',
        900: '#606B10',
        950: '#3C430A',
        DEFAULT: '#cfe71b',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FBFCF3,
  '100': #F7F9E6,
  '200': #F0F5C6,
  '300': #EAF499,
  '400': #DFEF67,
  '500': #D4EA34,
  '600': #cfe71b,
  '700': #A5B913,
  '800': #849410,
  '900': #606B10,
  '950': #3C430A,
);
$brand-base: #cfe71b;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FBFCF3", "$type": "color" },
      "100": { "$value": "#F7F9E6", "$type": "color" },
      "200": { "$value": "#F0F5C6", "$type": "color" },
      "300": { "$value": "#EAF499", "$type": "color" },
      "400": { "$value": "#DFEF67", "$type": "color" },
      "500": { "$value": "#D4EA34", "$type": "color" },
      "600": { "$value": "#cfe71b", "$type": "color" },
      "700": { "$value": "#A5B913", "$type": "color" },
      "800": { "$value": "#849410", "$type": "color" },
      "900": { "$value": "#606B10", "$type": "color" },
      "950": { "$value": "#3C430A", "$type": "color" }
    },
    "brandInk": { "$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 #cfe71b · 15.10:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.39:1
AA fail · AA large fail · AAA fail
Aa
Black text · 15.10:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #cfe71b as text scores 1.39:1 on white and 15.10:1 on black.
Best tinted ink on it, if plain black or white feels flat: #67730C at 3.74:1.

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
#6E7B0D · 4.66:1
AA on white−24% L
#6E7B0D
The quick fox
#515A09 · 7.46:1
AAA on white−31% L
#515A09
The quick fox
#cfe71b · 15.10:1
AA on blackalready passes
#cfe71b
The quick fox
#cfe71b · 15.10:1
AAA on blackalready passes
#cfe71b

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #8B9B10 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
#cfe71b on white: 1.39:1
AA ✗ fail · AA-large · AAA
Aa
#cfe71b on black: 15.10:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #cfe71b as text on that neutral, and that neutral as text on #cfe71b.

NeutralRatioBoth directions
White1.39:1AaAa
Slate 501.33:1AaAa
Slate 1001.27:1AaAa
Slate 2001.13:1AaAa
Slate 3001.07:1AaAa
Slate 4001.84:1AaAa
Slate 5003.42:1AaAa
Slate 6005.45:1AaAa
Slate 7007.45:1AaAa
Slate 80010.52:1AaAa
Slate 90012.84:1AaAa
Black15.10:1AaAa
Colour vision deficiency
true color
protanopia · #F7DA00
deuteranopia · #F5DC37
tritanopia · #DDD9C5

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. #cfe71b 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.

#FBFCF3
#F7F9E6
#F0F5C6
#EAF499
#DFEF67
#D4EA34
#cfe71b
#A5B913
#849410
#606B10
#3C430A
Base = 600Lightest = 50 · #FBFCF3Darkest = 950 · #3C430AText 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 0.050 117.2);
  --brand-100: oklch(0.94 0.079 117.2);
  --brand-200: oklch(0.88 0.119 117.2);
  --brand-300: oklch(0.80 0.155 117.2);
  --brand-400: oklch(0.72 0.183 117.2);
  --brand-500: oklch(0.64 0.199 117.2);
  --brand-600: oklch(0.56 0.199 117.2);
  --brand-700: oklch(0.48 0.187 117.2);
  --brand-800: oklch(0.40 0.167 117.2);
  --brand-900: oklch(0.32 0.139 117.2);
  --brand-950: oklch(0.24 0.109 117.2);
}

Colors that work with #cfe71b

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#E7EDC0
Hairlines and dividers
Muted text#919B4B
Captions on the surface
Accent#1632EC
Second voice, not a rival
Dark variant#67730C
Hover, pressed, headers
Light variant#FAFDE8
Selected rows, tints
Dark surface#222414
Dark-mode background
Hover#B4C915
One step down in lightness
Pressed#97A912
Two steps down
Disabled#C5C9AA
Chroma pulled out
Focus ring#DCF522
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 #cfe71b

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
  • 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 #67730C
Safe as a 1px border on white
No — use #8B9B10

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 mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight49/100
  • 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#331BE7
Analogous left#E7991B
Analogous right#69E71B
Split-complement 1#1B69E7
Split-complement 2#991BE7
Triadic 1#1BCFE7
Triadic 2#E71BCF
Tetradic#1BE799
On the wheel
Base+30°−30°+120°+240°+180°67°

#cfe71b sits at 67°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red81.2%
Green90.6%
Blue10.6%
R · 0–255
207
0xcf
G · 0–255
231
0xe7
B · 0–255
27
0x1b

CMYK percentages

Cyan10.4%
Magenta0.0%
Yellow88.3%
Key (black)9.4%

Total ink coverage is 108%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#cfe71b text on a black background

contrast 15.10:1

Card sample

#cfe71b text on a white background

contrast 1.39:1

Card sample

#cfe71b on grey

1.27:1

#cfe71b on its own surface

1.33:1

#cfe71b on its dark surface

11.35:1

CSS3 live lab

Text font color

The quick brown fox

color: #cfe71b;
Background color
Panel with #cfe71b background
background-color: #cfe71b;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #cfe71b;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(207, 231, 27, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(207, 231, 27, 0.45);
Border & gradient
Gradient panel
border: 3px solid #cfe71b;
background: linear-gradient(135deg, #cfe71b, #47E71B);
Gradient text

Gradient headline

background: linear-gradient(90deg, #cfe71b, #1BE722);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #cfe71b;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #cfe71b;
caret-color: #cfe71b;
Left rule
Pull quote or callout
border-left: 4px solid #cfe71b;
Ring + tint
Selected chip
background: #FAFDE8;
box-shadow: inset 0 0 0 2px #cfe71b;
Conic badge
68%
background: conic-gradient(#cfe71b 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #cfe71b 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(207, 231, 27, 0.5)
rgb(207 231 27 / 50%)
#cfe71b80
hsl(67 81% 51% / 50%)
color-mix(in srgb, #cfe71b 50%, transparent)
Alpha8-digit hexFlat on white
10%#cfe71b1a#FAFDE8
20%#cfe71b33#F5FAD1
40%#cfe71b66#ECF5A4
60%#cfe71b99#E2F176
80%#cfe71bcc#D9EC49

Gradients from #cfe71b

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, #DBED52, #cfe71b 45%, #67730C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #cfe71b, #2ECE16);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #cfe71b, #331BE7);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E0F06E 0%, #cfe71b 45%, #67730C 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%, #ECA049 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #6CEA37 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #67730C 0%, transparent 65%), #cfe71b;

Monochromatic scale

Palettes built from #cfe71b

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.

#cfe71b 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 15.10:1.

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.

#cfe71b, answered

What color is #cfe71b?

#cfe71b is a balanced electric yellow, closest to Yellow (ΔE2000 8.2). It sits at 67° on the hue wheel with 81% saturation and 51% lightness, which reads as warm.

What is the RGB value of #cfe71b?

rgb(207, 231, 27) — 207 red, 231 green and 27 blue out of 255, or 81.2% / 90.6% / 10.6% by channel.

What is #cfe71b in HSL and HSV?

hsl(67, 81%, 51%) and hsv(67, 88%, 91%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #cfe71b a light or a dark color?

It is a light color. Relative luminance is 0.7050 and perceived brightness is 82%, so black text on it reaches 15.10:1.

Should I use black or white text on #cfe71b?

Black. It scores 15.10:1 against #cfe71b, versus 1.39:1 for white — AAA at any size.

Is #cfe71b accessible on a white background?

#cfe71b on white scores 1.39:1, which fails WCAG AA at every size. Darken it to #6E7B0D to reach 4.5:1, or #515A09 for 7:1.

What is the complementary color of #cfe71b?

#331BE7 sits directly opposite on the wheel. Softer options are the split-complements #1B69E7 and #991BE7, which give the same contrast with far less vibration.

What colors go well with #cfe71b?

For interface work: #FAFAF4 as the surface, #E7EDC0 for borders, #919B4B for secondary text, #1632EC as an accent and #67730C for hover and pressed states. For a palette, the analogous pair #E7991B and #69E71B stays calm, while #331BE7 is the loudest partner.

What is #cfe71b in CMYK for printing?

cmyk(10%, 0%, 88%, 9%). 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 #cfe71b warm or cool?

Warm — it scores 31 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #E7B41B; nudged cooler, #84EA18.

Which Tailwind color is closest to #cfe71b?

The lime family — its 500 step is #84cc16, ΔE2000 12.2 away. That is a visible difference, so define #cfe71b as a custom token rather than reaching for the built-in.

How do I use #cfe71b in Tailwind CSS?

Inline it as an arbitrary value with bg-[#cfe71b] or text-[#cfe71b], 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 #cfe71b with 50% opacity?

rgba(207, 231, 27, 0.5), or #cfe71b80 in eight-digit hex. Over white that composites to #E7F38D; over black, #68740E.

Is #cfe71b a web-safe color?

No. The nearest web-safe colour is #CCFF33, ΔE2000 6.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #cfe71b 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 #cfe71b?

The safest is same-hue elevation: linear-gradient(135deg, #DBED52, #cfe71b 45%, #67730C). For more colour, a short hue run to #2ECE16 keeps it rich without turning muddy.

Work with #cfe71b in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #cfe71b at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.