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cyan · cool

#11accd

a dark, electric cyan · cool · closest name: Deep Sky Blue

Token name suggestion: Shadow Lagoon

RGB
17, 172, 205
HSL
191°, 85%, 44%
CMYK
92, 16, 0, 20
Luminance
0.3403

#11accd is a dark electric cyan, 191° on the wheel and 92/100 on the cool side. Put black text on it (7.81:1). As text it scores 2.69:1 on white — use #0D8199 instead. Nearest name is Deep Sky Blue, nearest Tailwind family is cyan.

hsl(191 85% 44%)rgb(17 172 205)Base step 700AAA inkCool

At a glance

Every number on this page in one read: what #11accd is made of, how bright it looks, and which way it leans.

Hex
#11accd
Hue
191°
cyan
Saturation
85%
electric
Lightness
44%
dark
Brightness
80%
HSV value
Perceived
58%
weighted brightness
Luminance
0.3403
WCAG relative
Temperature
Cool
92/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
7.81:1
Closest name
Deep Sky Blue
ΔE2000 9.6
Chroma
36.5
LCH, 0–130ish
OKLCH L
0.688
perceptual lightness
Tailwind
cyan
500 · ΔE 3.1
Web-safe
#0099CC
nearest of 216
Where it sits
Hue191° of 360°
Saturation85%
Lightness44%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #11accd.

Temperature
Warm ← → Cool92% 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%
Green87%
Blue13%

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

Every format

HEX#11accd
HEX (8-digit)#11accdff
RGBrgb(17, 172, 205)
RGBArgba(17, 172, 205, 1)
HSLhsl(191, 85%, 44%)
HSV / HSBhsv(191, 92%, 80%)
HWBhwb(191 7% 20%)
CMYKcmyk(92%, 16%, 0%, 20%)
LABlab(65.0 -24.5 -27.0)
LCHlch(65.0 36.5 227.7)
OKLCHoklch(0.688 0.122 218.4)
XYZ (D65)xyz(26.00, 34.03, 62.94)
Decimal1158349
Display P3color(display-p3 0.067 0.675 0.804)
Web-safe#0099CC

Copy-ready code

every platformclick to select
/* CSS */
color: #11accd;
background-color: #11accd;
/* CSS custom property */
--brand: #11accd;
/* Tailwind (arbitrary) */
class="text-[#11accd] bg-[#11accd]"
/* SCSS */
$brand: #11accd;
/* SwiftUI */
Color(red: 0.067, green: 0.675, blue: 0.804)
/* UIKit */
UIColor(red: 0.067, green: 0.675, blue: 0.804, alpha: 1)
/* Android XML */
<color name="brand">#11ACCD</color>
/* Android Compose */
Color(0xFF11ACCD)
/* Flutter */
Color(0xFF11ACCD)
/* Python / OpenCV (BGR) */
(205, 172, 17)
/* Python / PIL (RGB) */
(17, 172, 205)
/* Java AWT */
new Color(17, 172, 205)
/* .NET */
Color.FromArgb(255, 17, 172, 205)
/* OpenGL / Unity (0–1) */
(0.0667f, 0.6745f, 0.8039f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{17,172,205}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #11accd 85%, white);
border-color: color-mix(in oklab, #11accd 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0A6376, #D3E9EE);
/* relative colour syntax */
--hover: hsl(from #11accd 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: #F2FBFC;
  --brand-100: #E5F6FA;
  --brand-200: #C5EEF7;
  --brand-300: #97E6F6;
  --brand-400: #64D9F2;
  --brand-500: #30CDEE;
  --brand-600: #13BEE2;
  --brand-700: #11accd;
  --brand-800: #0C7F97;
  --brand-900: #0E5C6D;
  --brand-950: #083A44;
  --brand: #11accd;
  --brand-ink: #000000;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E5ED;
  --brand-hover: #0E90AC;
  --brand-pressed: #0C758B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142224;
    --brand-ink: #D3E9EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FBFC',
        100: '#E5F6FA',
        200: '#C5EEF7',
        300: '#97E6F6',
        400: '#64D9F2',
        500: '#30CDEE',
        600: '#13BEE2',
        700: '#11accd',
        800: '#0C7F97',
        900: '#0E5C6D',
        950: '#083A44',
        DEFAULT: '#11accd',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FBFC,
  '100': #E5F6FA,
  '200': #C5EEF7,
  '300': #97E6F6,
  '400': #64D9F2,
  '500': #30CDEE,
  '600': #13BEE2,
  '700': #11accd,
  '800': #0C7F97,
  '900': #0E5C6D,
  '950': #083A44,
);
$brand-base: #11accd;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FBFC", "$type": "color" },
      "100": { "$value": "#E5F6FA", "$type": "color" },
      "200": { "$value": "#C5EEF7", "$type": "color" },
      "300": { "$value": "#97E6F6", "$type": "color" },
      "400": { "$value": "#64D9F2", "$type": "color" },
      "500": { "$value": "#30CDEE", "$type": "color" },
      "600": { "$value": "#13BEE2", "$type": "color" },
      "700": { "$value": "#11accd", "$type": "color" },
      "800": { "$value": "#0C7F97", "$type": "color" },
      "900": { "$value": "#0E5C6D", "$type": "color" },
      "950": { "$value": "#083A44", "$type": "color" }
    },
    "brandInk": { "$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 #11accd · 7.81:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.69:1
AA fail · AA large fail · AAA fail
Aa
Black text · 7.81:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #11accd as text scores 2.69:1 on white and 7.81:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0A6376 at 2.55:1.

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
#0D8199 · 4.55:1
AA on white−11% L
#0D8199
The quick fox
#0A6173 · 7.07:1
AAA on white−19% L
#0A6173
The quick fox
#11accd · 7.81:1
AA on blackalready passes
#11accd
The quick fox
#11accd · 7.81:1
AAA on blackalready passes
#11accd

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #10A0BF 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
#11accd on white: 2.69:1
AA ✗ fail · AA-large · AAA
Aa
#11accd on black: 7.81:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #11accd as text on that neutral, and that neutral as text on #11accd.

NeutralRatioBoth directions
White2.69:1AaAa
Slate 502.57:1AaAa
Slate 1002.46:1AaAa
Slate 2002.18:1AaAa
Slate 3001.81:1AaAa
Slate 4001.05:1AaAa
Slate 5001.77:1AaAa
Slate 6002.82:1AaAa
Slate 7003.85:1AaAa
Slate 8005.44:1AaAa
Slate 9006.64:1AaAa
Black7.81:1AaAa
Colour vision deficiency
true color
protanopia · #97A7CF
deuteranopia · #8197CD
tritanopia · #00B7B7

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. #11accd 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.

#F2FBFC
#E5F6FA
#C5EEF7
#97E6F6
#64D9F2
#30CDEE
#13BEE2
#11accd
#0C7F97
#0E5C6D
#083A44
Base = 700Lightest = 50 · #F2FBFCDarkest = 950 · #083A44Text 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 0.030 218.4);
  --brand-100: oklch(0.94 0.049 218.4);
  --brand-200: oklch(0.88 0.073 218.4);
  --brand-300: oklch(0.80 0.095 218.4);
  --brand-400: oklch(0.72 0.112 218.4);
  --brand-500: oklch(0.64 0.122 218.4);
  --brand-600: oklch(0.56 0.122 218.4);
  --brand-700: oklch(0.48 0.114 218.4);
  --brand-800: oklch(0.40 0.102 218.4);
  --brand-900: oklch(0.32 0.085 218.4);
  --brand-950: oklch(0.24 0.067 218.4);
}

Colors that work with #11accd

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#C0E5ED
Hairlines and dividers
Muted text#4B8D9B
Captions on the surface
Accent#D10D1B
Second voice, not a rival
Dark variant#0A6376
Hover, pressed, headers
Light variant#E7F9FD
Selected rows, tints
Dark surface#142224
Dark-mode background
Hover#0E90AC
One step down in lightness
Pressed#0C758B
Two steps down
Disabled#94B4BA
Chroma pulled out
Focus ring#06C4EC
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 #11accd

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 #0A6376
Safe as a 1px border on white
No — use #10A0BF

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 low lightness adds weight and formality.

Worth knowing

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

Reads as
  • FormalityHigh
  • EnergyHigh
  • Weight57/100
  • 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#CD3211
Analogous left#11CD90
Analogous right#114ECD
Split-complement 1#CD114E
Split-complement 2#CD9011
Triadic 1#CD11AC
Triadic 2#ACCD11
Tetradic#9011CD
On the wheel
Base+30°−30°+120°+240°+180°191°

#11accd sits at 191°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red6.7%
Green67.5%
Blue80.4%
R · 0–255
17
0x11
G · 0–255
172
0xac
B · 0–255
205
0xcd

CMYK percentages

Cyan91.7%
Magenta16.1%
Yellow0.0%
Key (black)19.6%

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

Color previews

#11accd text on a black background

contrast 7.81:1

Card sample

#11accd text on a white background

contrast 2.69:1

Card sample

#11accd on grey

2.46:1

#11accd on its own surface

2.53:1

#11accd on its dark surface

6.08:1

CSS3 live lab

Text font color

The quick brown fox

color: #11accd;
Background color
Panel with #11accd background
background-color: #11accd;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #11accd;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(17, 172, 205, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(17, 172, 205, 0.45);
Border & gradient
Gradient panel
border: 3px solid #11accd;
background: linear-gradient(135deg, #11accd, #112FCD);
Gradient text

Gradient headline

background: linear-gradient(90deg, #11accd, #2211CD);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #11accd;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #11accd;
caret-color: #11accd;
Left rule
Pull quote or callout
border-left: 4px solid #11accd;
Ring + tint
Selected chip
background: #E7F9FD;
box-shadow: inset 0 0 0 2px #11accd;
Conic badge
68%
background: conic-gradient(#11accd 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #11accd 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(17, 172, 205, 0.5)
rgb(17 172 205 / 50%)
#11accd80
hsl(191 85% 44% / 50%)
color-mix(in srgb, #11accd 50%, transparent)
Alpha8-digit hexFlat on white
10%#11accd1a#E7F7FA
20%#11accd33#CFEEF5
40%#11accd66#A0DEEB
60%#11accd99#70CDE1
80%#11accdcc#41BDD7

Gradients from #11accd

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, #2DCCEE, #11accd 45%, #0A6376);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #11accd, #0F1BB1);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #11accd, #CD3211);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #4AD3F0 0%, #11accd 45%, #0A6376 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%, #24ED9B 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #1347E9 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0A6376 0%, transparent 65%), #11accd;

Monochromatic scale

Palettes built from #11accd

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.

#11accd 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 7.81:1.

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.

#11accd, answered

What color is #11accd?

#11accd is a dark electric cyan, closest to Deep Sky Blue (ΔE2000 9.6). It sits at 191° on the hue wheel with 85% saturation and 44% lightness, which reads as cool.

What is the RGB value of #11accd?

rgb(17, 172, 205) — 17 red, 172 green and 205 blue out of 255, or 6.7% / 67.5% / 80.4% by channel.

What is #11accd in HSL and HSV?

hsl(191, 85%, 44%) and hsv(191, 92%, 80%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #11accd a light or a dark color?

It is a mid-tone. Relative luminance is 0.3403 and perceived brightness is 58%, so black text on it reaches 7.81:1.

Should I use black or white text on #11accd?

Black. It scores 7.81:1 against #11accd, versus 2.69:1 for white — AAA at any size.

Is #11accd accessible on a white background?

#11accd on white scores 2.69:1, which fails WCAG AA at every size. Darken it to #0D8199 to reach 4.5:1, or #0A6173 for 7:1.

What is the complementary color of #11accd?

#CD3211 sits directly opposite on the wheel. Softer options are the split-complements #CD114E and #CD9011, which give the same contrast with far less vibration.

What colors go well with #11accd?

For interface work: #F4F9FA as the surface, #C0E5ED for borders, #4B8D9B for secondary text, #D10D1B as an accent and #0A6376 for hover and pressed states. For a palette, the analogous pair #11CD90 and #114ECD stays calm, while #CD3211 is the loudest partner.

What is #11accd in CMYK for printing?

cmyk(92%, 16%, 0%, 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 #11accd warm or cool?

Cool — it scores 92 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #11CDA9; nudged cooler, #0F8BCF.

Which Tailwind color is closest to #11accd?

The cyan family — its 500 step is #06b6d4, ΔE2000 3.1 away. That is a visible difference, so define #11accd as a custom token rather than reaching for the built-in.

How do I use #11accd in Tailwind CSS?

Inline it as an arbitrary value with bg-[#11accd] or text-[#11accd], 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 #11accd with 50% opacity?

rgba(17, 172, 205, 0.5), or #11accd80 in eight-digit hex. Over white that composites to #88D6E6; over black, #095667.

Is #11accd a web-safe color?

No. The nearest web-safe colour is #0099CC, ΔE2000 8.3 away. The palette only matters for legacy displays and some email clients now.

What does the color #11accd 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 #11accd?

The safest is same-hue elevation: linear-gradient(135deg, #2DCCEE, #11accd 45%, #0A6376). For more colour, a short hue run to #0F1BB1 keeps it rich without turning muddy.

Work with #11accd in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #11accd at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.