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blue · cool

#116dda

a balanced, electric blue · cool · closest name: Royal Blue

Token name suggestion: Signal Cobalt

RGB
17, 109, 218
HSL
213°, 86%, 46%
CMYK
92, 50, 0, 15
Luminance
0.1612

#116dda is a balanced electric blue, 213° on the wheel and 99/100 on the cool side. Put white text on it (4.97:1). As text it scores 4.97:1 on white — safe at any size. Nearest name is Royal Blue, nearest Tailwind family is blue.

hsl(213 86% 46%)rgb(17 109 218)Base step 600AA inkCool

At a glance

Every number on this page in one read: what #116dda is made of, how bright it looks, and which way it leans.

Hex
#116dda
Hue
213°
blue
Saturation
86%
electric
Lightness
46%
balanced
Brightness
85%
HSV value
Perceived
44%
weighted brightness
Luminance
0.1612
WCAG relative
Temperature
Cool
99/100 cool
Color family
Blue
Tone
Electric
Best ink
White
4.97:1
Closest name
Royal Blue
ΔE2000 5
Chroma
64.7
LCH, 0–130ish
OKLCH L
0.549
perceptual lightness
Tailwind
blue
500 · ΔE 8.5
Web-safe
#0066CC
nearest of 216
Where it sits
Hue213° of 360°
Saturation86%
Lightness46%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #116dda.

Temperature
Warm ← → Cool99% 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
Red1%
Green68%
Blue31%

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

Every format

HEX#116dda
HEX (8-digit)#116ddaff
RGBrgb(17, 109, 218)
RGBArgba(17, 109, 218, 1)
HSLhsl(213, 86%, 46%)
HSV / HSBhsv(213, 92%, 85%)
HWBhwb(213 7% 15%)
CMYKcmyk(92%, 50%, 0%, 15%)
LABlab(47.1 16.9 -62.5)
LCHlch(47.1 64.7 285.1)
OKLCHoklch(0.549 0.185 256.9)
XYZ (D65)xyz(18.35, 16.12, 68.46)
Decimal1142234
Display P3color(display-p3 0.067 0.427 0.855)
Web-safe#0066CC

Copy-ready code

every platformclick to select
/* CSS */
color: #116dda;
background-color: #116dda;
/* CSS custom property */
--brand: #116dda;
/* Tailwind (arbitrary) */
class="text-[#116dda] bg-[#116dda]"
/* SCSS */
$brand: #116dda;
/* SwiftUI */
Color(red: 0.067, green: 0.427, blue: 0.855)
/* UIKit */
UIColor(red: 0.067, green: 0.427, blue: 0.855, alpha: 1)
/* Android XML */
<color name="brand">#116DDA</color>
/* Android Compose */
Color(0xFF116DDA)
/* Flutter */
Color(0xFF116DDA)
/* Python / OpenCV (BGR) */
(218, 109, 17)
/* Python / PIL (RGB) */
(17, 109, 218)
/* Java AWT */
new Color(17, 109, 218)
/* .NET */
Color.FromArgb(255, 17, 109, 218)
/* OpenGL / Unity (0–1) */
(0.0667f, 0.4275f, 0.8549f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{17,109,218}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #116dda 85%, white);
border-color: color-mix(in oklab, #116dda 40%, transparent);
/* theme-aware in one line */
color: light-dark(#093B76, #D3DFEE);
/* relative colour syntax */
--hover: hsl(from #116dda 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: #F2F7FD;
  --brand-100: #E5EFFA;
  --brand-200: #C5DCF7;
  --brand-300: #97C3F7;
  --brand-400: #63A5F3;
  --brand-500: #2F87EF;
  --brand-600: #116dda;
  --brand-700: #0F5FBD;
  --brand-800: #0C4C97;
  --brand-900: #0D396D;
  --brand-950: #082444;
  --brand: #116dda;
  --brand-ink: #ffffff;
  --brand-surface: #F4F7FA;
  --brand-border: #C0D4ED;
  --brand-hover: #0E5DB9;
  --brand-pressed: #0C4C98;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141B24;
    --brand-ink: #D3DFEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2F7FD',
        100: '#E5EFFA',
        200: '#C5DCF7',
        300: '#97C3F7',
        400: '#63A5F3',
        500: '#2F87EF',
        600: '#116dda',
        700: '#0F5FBD',
        800: '#0C4C97',
        900: '#0D396D',
        950: '#082444',
        DEFAULT: '#116dda',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2F7FD,
  '100': #E5EFFA,
  '200': #C5DCF7,
  '300': #97C3F7,
  '400': #63A5F3,
  '500': #2F87EF,
  '600': #116dda,
  '700': #0F5FBD,
  '800': #0C4C97,
  '900': #0D396D,
  '950': #082444,
);
$brand-base: #116dda;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2F7FD", "$type": "color" },
      "100": { "$value": "#E5EFFA", "$type": "color" },
      "200": { "$value": "#C5DCF7", "$type": "color" },
      "300": { "$value": "#97C3F7", "$type": "color" },
      "400": { "$value": "#63A5F3", "$type": "color" },
      "500": { "$value": "#2F87EF", "$type": "color" },
      "600": { "$value": "#116dda", "$type": "color" },
      "700": { "$value": "#0F5FBD", "$type": "color" },
      "800": { "$value": "#0C4C97", "$type": "color" },
      "900": { "$value": "#0D396D", "$type": "color" },
      "950": { "$value": "#082444", "$type": "color" }
    },
    "brandInk": { "$value": "#ffffff", "$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#ffffff on #116dda · 4.97:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.97:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 4.22:1
AA fail · AA large pass · AAA fail
Reading the other direction: #116dda as text scores 4.97:1 on white and 4.22:1 on black.
Best tinted ink on it, if plain black or white feels flat: #E7F1FD at 4.36:1.

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
#116dda · 4.97:1
AA on whitealready passes
#116dda
The quick fox
#0D55AB · 7.23:1
AAA on white−10% L
#0D55AB
The quick fox
#1272E4 · 4.55:1
AA on black+2% L
#1272E4
The quick fox
#4C97F1 · 7.00:1
AAA on black+16% L
#4C97F1

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #116DDA 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
#116dda on white: 4.97:1
AA ✓ pass · AA-large · AAA
Aa
#116dda on black: 4.22:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #116dda as text on that neutral, and that neutral as text on #116dda.

NeutralRatioBoth directions
White4.97:1AaAa
Slate 504.75:1AaAa
Slate 1004.54:1AaAa
Slate 2004.03:1AaAa
Slate 3003.35:1AaAa
Slate 4001.94:1AaAa
Slate 5001.04:1AaAa
Slate 6001.52:1AaAa
Slate 7002.08:1AaAa
Slate 8002.94:1AaAa
Slate 9003.59:1AaAa
Black4.22:1AaAa
Colour vision deficiency
true color
protanopia · #2579DE
deuteranopia · #0068D8
tritanopia · #008899

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. #116dda 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.

#F2F7FD
#E5EFFA
#C5DCF7
#97C3F7
#63A5F3
#2F87EF
#116dda
#0F5FBD
#0C4C97
#0D396D
#082444
Base = 600Lightest = 50 · #F2F7FDDarkest = 950 · #082444Text step on white = 600
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 0.046 256.9);
  --brand-100: oklch(0.94 0.074 256.9);
  --brand-200: oklch(0.88 0.111 256.9);
  --brand-300: oklch(0.80 0.144 256.9);
  --brand-400: oklch(0.72 0.170 256.9);
  --brand-500: oklch(0.64 0.185 256.9);
  --brand-600: oklch(0.56 0.185 256.9);
  --brand-700: oklch(0.48 0.174 256.9);
  --brand-800: oklch(0.40 0.155 256.9);
  --brand-900: oklch(0.32 0.130 256.9);
  --brand-950: oklch(0.24 0.102 256.9);
}

Colors that work with #116dda

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#ffffff
White wins here
Surface#F4F7FA
Tinted page background
Border#C0D4ED
Hairlines and dividers
Muted text#4B6F9B
Captions on the surface
Accent#DF4A0C
Second voice, not a rival
Dark variant#093B76
Hover, pressed, headers
Light variant#E7F1FD
Selected rows, tints
Dark surface#141B24
Dark-mode background
Hover#0E5DB9
One step down in lightness
Pressed#0C4C98
Two steps down
Disabled#9CACC0
Chroma pulled out
Focus ring#0676F9
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 #116dda

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Body text and links on white
  • 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
  • Full-page backgrounds — tiring over long sessions
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Any size
Safe as a fill behind white type
Yes
Safe as a 1px border on white
Yes

Meaning and mood

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

trustedcalmcompetentcorporate

The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed.

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

It is also the most crowded hue on the web. Distinctiveness has to come from your other choices.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight54/100
  • 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#DA7E11
Analogous left#11D2DA
Analogous right#1911DA
Split-complement 1#DA1911
Split-complement 2#D2DA11
Triadic 1#DA116D
Triadic 2#6DDA11
Tetradic#DA11D2
On the wheel
Base+30°−30°+120°+240°+180°213°

#116dda sits at 213°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red6.7%
Green42.7%
Blue85.5%
R · 0–255
17
0x11
G · 0–255
109
0x6d
B · 0–255
218
0xda

CMYK percentages

Cyan92.2%
Magenta50.0%
Yellow0.0%
Key (black)14.5%

Total ink coverage is 157%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#116dda text on a black background

contrast 4.22:1

Card sample

#116dda text on a white background

contrast 4.97:1

Card sample

#116dda on grey

4.54:1

#116dda on its own surface

4.62:1

#116dda on its dark surface

3.48:1

CSS3 live lab

Text font color

The quick brown fox

color: #116dda;
Background color
Panel with #116dda background
background-color: #116dda;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #116dda;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(17, 109, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(17, 109, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #116dda;
background: linear-gradient(135deg, #116dda, #3B11DA);
Gradient text

Gradient headline

background: linear-gradient(90deg, #116dda, #6D11DA);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #116dda;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #116dda;
caret-color: #116dda;
Left rule
Pull quote or callout
border-left: 4px solid #116dda;
Ring + tint
Selected chip
background: #E7F1FD;
box-shadow: inset 0 0 0 2px #116dda;
Conic badge
68%
background: conic-gradient(#116dda 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #116dda 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, 109, 218, 0.5)
rgb(17 109 218 / 50%)
#116dda80
hsl(213 86% 46% / 50%)
color-mix(in srgb, #116dda 50%, transparent)
Alpha8-digit hexFlat on white
10%#116dda1a#E7F0FB
20%#116dda33#CFE2F8
40%#116dda66#A0C5F0
60%#116dda99#70A7E9
80%#116ddacc#418AE1

Gradients from #116dda

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, #398DF0, #116dda 45%, #093B76);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #116dda, #420FBE);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #116dda, #DA7E11);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #559DF2 0%, #116dda 45%, #093B76 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F7FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #2FEFE7 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #371CED 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #093B76 0%, transparent 65%), #116dda;

Monochromatic scale

Palettes built from #116dda

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.

#116dda in the real world

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

Industries
TechnologyFinanceHealthcareEnterprise SaaS
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

Too dim on dark surfaces at 4.22:1 — lift it to #1272E4 for body text, or reserve it for fills.

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.

#116dda, answered

What color is #116dda?

#116dda is a balanced electric blue, closest to Royal Blue (ΔE2000 5). It sits at 213° on the hue wheel with 86% saturation and 46% lightness, which reads as cool.

What is the RGB value of #116dda?

rgb(17, 109, 218) — 17 red, 109 green and 218 blue out of 255, or 6.7% / 42.7% / 85.5% by channel.

What is #116dda in HSL and HSV?

hsl(213, 86%, 46%) and hsv(213, 92%, 85%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #116dda a light or a dark color?

It is a dark color. Relative luminance is 0.1612 and perceived brightness is 44%, so white text on it reaches 4.97:1.

Should I use black or white text on #116dda?

White. It scores 4.97:1 against #116dda, versus 4.22:1 for black — AA at any size.

Is #116dda accessible on a white background?

#116dda on white scores 4.97:1, which clears AA at every size but not AAA.

What is the complementary color of #116dda?

#DA7E11 sits directly opposite on the wheel. Softer options are the split-complements #DA1911 and #D2DA11, which give the same contrast with far less vibration.

What colors go well with #116dda?

For interface work: #F4F7FA as the surface, #C0D4ED for borders, #4B6F9B for secondary text, #DF4A0C as an accent and #093B76 for hover and pressed states. For a palette, the analogous pair #11D2DA and #1911DA stays calm, while #DA7E11 is the loudest partner.

What is #116dda in CMYK for printing?

cmyk(92%, 50%, 0%, 15%). 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 #116dda warm or cool?

Cool — it scores 99 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #1123DA; nudged cooler, #0D62C5.

Which Tailwind color is closest to #116dda?

The blue family — its 500 step is #3b82f6, ΔE2000 8.5 away. That is a visible difference, so define #116dda as a custom token rather than reaching for the built-in.

How do I use #116dda in Tailwind CSS?

Inline it as an arbitrary value with bg-[#116dda] or text-[#116dda], 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 #116dda with 50% opacity?

rgba(17, 109, 218, 0.5), or #116dda80 in eight-digit hex. Over white that composites to #88B6ED; over black, #09376D.

Is #116dda a web-safe color?

No. The nearest web-safe colour is #0066CC, ΔE2000 3 away. The palette only matters for legacy displays and some email clients now.

What does the color #116dda mean?

As a blue, it reads trusted, calm, competent. The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #116dda?

The safest is same-hue elevation: linear-gradient(135deg, #398DF0, #116dda 45%, #093B76). For more colour, a short hue run to #420FBE keeps it rich without turning muddy.

Work with #116dda in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #116dda at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.