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cyan · cool

#0bbfff

a balanced, electric cyan · cool · “Deep Sky Blue”

Token name suggestion: Atlas Teal

RGB
11, 191, 255
HSL
196°, 100%, 52%
CMYK
96, 25, 0, 0
Luminance
0.4455

#0bbfff is a balanced electric cyan, 196° on the wheel and 94/100 on the cool side. Put black text on it (9.91:1). As text it scores 2.12:1 on white — use #007DA9 instead. Nearest name is Deep Sky Blue, nearest Tailwind family is sky.

hsl(196 100% 52%)rgb(11 191 255)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #0bbfff is made of, how bright it looks, and which way it leans.

Hex
#0bbfff
Hue
196°
cyan
Saturation
100%
electric
Lightness
52%
balanced
Brightness
100%
HSV value
Perceived
67%
weighted brightness
Luminance
0.4455
WCAG relative
Temperature
Cool
94/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
9.91:1
Closest name
Deep Sky Blue
ΔE2000 0.1
Chroma
45.9
LCH, 0–130ish
OKLCH L
0.756
perceptual lightness
Tailwind
sky
500 · ΔE 7.6
Web-safe
#00CCFF
nearest of 216
Where it sits
Hue196° of 360°
Saturation100%
Lightness52%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #0bbfff.

Temperature
Warm ← → Cool94% 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
Red0%
Green84%
Blue16%

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

Every format

HEX#0bbfff
HEX (8-digit)#0bbfffff
RGBrgb(11, 191, 255)
RGBArgba(11, 191, 255, 1)
HSLhsl(196, 100%, 52%)
HSV / HSBhsv(196, 96%, 100%)
HWBhwb(196 4% 0%)
CMYKcmyk(96%, 25%, 0%, 0%)
LABlab(72.6 -17.4 -42.5)
LCHlch(72.6 45.9 247.7)
OKLCHoklch(0.756 0.153 231.9)
XYZ (D65)xyz(36.81, 44.55, 101.25)
Decimal770047
Display P3color(display-p3 0.043 0.749 1.000)
Web-safe#00CCFF

Copy-ready code

every platformclick to select
/* CSS */
color: #0bbfff;
background-color: #0bbfff;
/* CSS custom property */
--brand: #0bbfff;
/* Tailwind (arbitrary) */
class="text-[#0bbfff] bg-[#0bbfff]"
/* SCSS */
$brand: #0bbfff;
/* SwiftUI */
Color(red: 0.043, green: 0.749, blue: 1.000)
/* UIKit */
UIColor(red: 0.043, green: 0.749, blue: 1.000, alpha: 1)
/* Android XML */
<color name="brand">#0BBFFF</color>
/* Android Compose */
Color(0xFF0BBFFF)
/* Flutter */
Color(0xFF0BBFFF)
/* Python / OpenCV (BGR) */
(255, 191, 11)
/* Python / PIL (RGB) */
(11, 191, 255)
/* Java AWT */
new Color(11, 191, 255)
/* .NET */
Color.FromArgb(255, 11, 191, 255)
/* OpenGL / Unity (0–1) */
(0.0431f, 0.7490f, 1.0000f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{11,191,255}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #0bbfff 85%, white);
border-color: color-mix(in oklab, #0bbfff 40%, transparent);
/* theme-aware in one line */
color: light-dark(#005E80, #D3E7EE);
/* relative colour syntax */
--hover: hsl(from #0bbfff 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: #F1FAFE;
  --brand-100: #E3F6FC;
  --brand-200: #C0ECFC;
  --brand-300: #8FE2FF;
  --brand-400: #57D3FF;
  --brand-500: #0bbfff;
  --brand-600: #00B5F5;
  --brand-700: #0097CC;
  --brand-800: #0078A3;
  --brand-900: #055876;
  --brand-950: #033749;
  --brand: #0bbfff;
  --brand-ink: #000000;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E1ED;
  --brand-hover: #00AAE7;
  --brand-pressed: #0090C3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142024;
    --brand-ink: #D3E7EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1FAFE',
        100: '#E3F6FC',
        200: '#C0ECFC',
        300: '#8FE2FF',
        400: '#57D3FF',
        500: '#0bbfff',
        600: '#00B5F5',
        700: '#0097CC',
        800: '#0078A3',
        900: '#055876',
        950: '#033749',
        DEFAULT: '#0bbfff',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1FAFE,
  '100': #E3F6FC,
  '200': #C0ECFC,
  '300': #8FE2FF,
  '400': #57D3FF,
  '500': #0bbfff,
  '600': #00B5F5,
  '700': #0097CC,
  '800': #0078A3,
  '900': #055876,
  '950': #033749,
);
$brand-base: #0bbfff;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1FAFE", "$type": "color" },
      "100": { "$value": "#E3F6FC", "$type": "color" },
      "200": { "$value": "#C0ECFC", "$type": "color" },
      "300": { "$value": "#8FE2FF", "$type": "color" },
      "400": { "$value": "#57D3FF", "$type": "color" },
      "500": { "$value": "#0bbfff", "$type": "color" },
      "600": { "$value": "#00B5F5", "$type": "color" },
      "700": { "$value": "#0097CC", "$type": "color" },
      "800": { "$value": "#0078A3", "$type": "color" },
      "900": { "$value": "#055876", "$type": "color" },
      "950": { "$value": "#033749", "$type": "color" }
    },
    "brandInk": { "$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 #0bbfff · 9.91:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.12:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.91:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #0bbfff as text scores 2.12:1 on white and 9.91:1 on black.
Best tinted ink on it, if plain black or white feels flat: #005E80 at 3.40:1.

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
#007DA9 · 4.66:1
AA on white−19% L
#007DA9
The quick fox
#005F81 · 7.11:1
AAA on white−27% L
#005F81
The quick fox
#0bbfff · 9.91:1
AA on blackalready passes
#0bbfff
The quick fox
#0bbfff · 9.91:1
AAA on blackalready passes
#0bbfff

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #009FD7 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
#0bbfff on white: 2.12:1
AA ✗ fail · AA-large · AAA
Aa
#0bbfff on black: 9.91:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #0bbfff as text on that neutral, and that neutral as text on #0bbfff.

NeutralRatioBoth directions
White2.12:1AaAa
Slate 502.03:1AaAa
Slate 1001.93:1AaAa
Slate 2001.72:1AaAa
Slate 3001.43:1AaAa
Slate 4001.21:1AaAa
Slate 5002.25:1AaAa
Slate 6003.58:1AaAa
Slate 7004.89:1AaAa
Slate 8006.90:1AaAa
Slate 9008.43:1AaAa
Black9.91:1AaAa
Colour vision deficiency
true color
protanopia · #9EBDFF
deuteranopia · #82A9FE
tritanopia · #00D0D5

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. #0bbfff 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.

#F1FAFE
#E3F6FC
#C0ECFC
#8FE2FF
#57D3FF
#0bbfff
#00B5F5
#0097CC
#0078A3
#055876
#033749
Base = 500Lightest = 50 · #F1FAFEDarkest = 950 · #033749Text 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 0.038 231.9);
  --brand-100: oklch(0.94 0.061 231.9);
  --brand-200: oklch(0.88 0.092 231.9);
  --brand-300: oklch(0.80 0.119 231.9);
  --brand-400: oklch(0.72 0.140 231.9);
  --brand-500: oklch(0.64 0.153 231.9);
  --brand-600: oklch(0.56 0.153 231.9);
  --brand-700: oklch(0.48 0.143 231.9);
  --brand-800: oklch(0.40 0.128 231.9);
  --brand-900: oklch(0.32 0.107 231.9);
  --brand-950: oklch(0.24 0.084 231.9);
}

Colors that work with #0bbfff

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#F4F9FA
Tinted page background
Border#C0E1ED
Hairlines and dividers
Muted text#4B869B
Captions on the surface
Accent#FF0E0B
Second voice, not a rival
Dark variant#005E80
Hover, pressed, headers
Light variant#E5F8FF
Selected rows, tints
Dark surface#142024
Dark-mode background
Hover#00AAE7
One step down in lightness
Pressed#0090C3
Two steps down
Disabled#AFC4CC
Chroma pulled out
Focus ring#20C5FF
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 #0bbfff

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 #005E80
Safe as a 1px border on white
No — use #009FD7

Meaning and mood

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

cleantechnicalfreshclinical

Cyan reads as water, air and infrastructure: cool, hygienic, engineered.

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

At high lightness it disappears into white surfaces and thin strokes vanish entirely.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight48/100
  • 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#FF4B0B
Analogous left#0BFFC5
Analogous right#0B45FF
Split-complement 1#FF0B45
Split-complement 2#FFC50B
Triadic 1#FF0BBF
Triadic 2#BFFF0B
Tetradic#C50BFF
On the wheel
Base+30°−30°+120°+240°+180°196°

#0bbfff sits at 196°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red4.3%
Green74.9%
Blue100.0%
R · 0–255
11
0x0b
G · 0–255
191
0xbf
B · 0–255
255
0xff

CMYK percentages

Cyan95.7%
Magenta25.1%
Yellow0.0%
Key (black)0.0%

Total ink coverage is 121%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#0bbfff text on a black background

contrast 9.91:1

Card sample

#0bbfff text on a white background

contrast 2.12:1

Card sample

#0bbfff on grey

1.93:1

#0bbfff on its own surface

2.00:1

#0bbfff on its dark surface

7.85:1

CSS3 live lab

Text font color

The quick brown fox

color: #0bbfff;
Background color
Panel with #0bbfff background
background-color: #0bbfff;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #0bbfff;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(11, 191, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(11, 191, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0bbfff;
background: linear-gradient(135deg, #0bbfff, #0B1DFF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #0bbfff, #370BFF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #0bbfff;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #0bbfff;
caret-color: #0bbfff;
Left rule
Pull quote or callout
border-left: 4px solid #0bbfff;
Ring + tint
Selected chip
background: #E5F8FF;
box-shadow: inset 0 0 0 2px #0bbfff;
Conic badge
68%
background: conic-gradient(#0bbfff 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #0bbfff 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(11, 191, 255, 0.5)
rgb(11 191 255 / 50%)
#0bbfff80
hsl(196 100% 52% / 50%)
color-mix(in srgb, #0bbfff 50%, transparent)
Alpha8-digit hexFlat on white
10%#0bbfff1a#E7F9FF
20%#0bbfff33#CEF2FF
40%#0bbfff66#9DE5FF
60%#0bbfff99#6DD9FF
80%#0bbfffcc#3CCCFF

Gradients from #0bbfff

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, #48CFFF, #0bbfff 45%, #005E80);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #0bbfff, #0300EC);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #0bbfff, #FF4B0B);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #67D7FF 0%, #0bbfff 45%, #005E80 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F9FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #3EFFC1 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #2A4BFF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #005E80 0%, transparent 65%), #0bbfff;

Monochromatic scale

Palettes built from #0bbfff

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.

#0bbfff in the real world

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

Industries
TechnologyTravelHealthcareMedia
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 9.91:1.

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.

#0bbfff, answered

What color is #0bbfff?

#0bbfff is a balanced electric cyan — the CSS keyword Deep Sky Blue. It sits at 196° on the hue wheel with 100% saturation and 52% lightness, which reads as cool.

What is the RGB value of #0bbfff?

rgb(11, 191, 255) — 11 red, 191 green and 255 blue out of 255, or 4.3% / 74.9% / 100% by channel.

What is #0bbfff in HSL and HSV?

hsl(196, 100%, 52%) and hsv(196, 96%, 100%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #0bbfff a light or a dark color?

It is a mid-tone. Relative luminance is 0.4455 and perceived brightness is 67%, so black text on it reaches 9.91:1.

Should I use black or white text on #0bbfff?

Black. It scores 9.91:1 against #0bbfff, versus 2.12:1 for white — AAA at any size.

Is #0bbfff accessible on a white background?

#0bbfff on white scores 2.12:1, which fails WCAG AA at every size. Darken it to #007DA9 to reach 4.5:1, or #005F81 for 7:1.

What is the complementary color of #0bbfff?

#FF4B0B sits directly opposite on the wheel. Softer options are the split-complements #FF0B45 and #FFC50B, which give the same contrast with far less vibration.

What colors go well with #0bbfff?

For interface work: #F4F9FA as the surface, #C0E1ED for borders, #4B869B for secondary text, #FF0E0B as an accent and #005E80 for hover and pressed states. For a palette, the analogous pair #0BFFC5 and #0B45FF stays calm, while #FF4B0B is the loudest partner.

What is #0bbfff in CMYK for printing?

cmyk(96%, 25%, 0%, 0%). 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 #0bbfff warm or cool?

Cool — it scores 94 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #0BFFE5; nudged cooler, #0BA2FF.

Which Tailwind color is closest to #0bbfff?

The sky family — its 500 step is #0ea5e9, ΔE2000 7.6 away. That is a visible difference, so define #0bbfff as a custom token rather than reaching for the built-in.

How do I use #0bbfff in Tailwind CSS?

Inline it as an arbitrary value with bg-[#0bbfff] or text-[#0bbfff], 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 #0bbfff with 50% opacity?

rgba(11, 191, 255, 0.5), or #0bbfff80 in eight-digit hex. Over white that composites to #85DFFF; over black, #066080.

Is #0bbfff a web-safe color?

No. The nearest web-safe colour is #00CCFF, ΔE2000 5.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #0bbfff mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #0bbfff?

The safest is same-hue elevation: linear-gradient(135deg, #48CFFF, #0bbfff 45%, #005E80). For more colour, a short hue run to #0300EC keeps it rich without turning muddy.

Work with #0bbfff in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #0bbfff at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.