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#6db0df

a light, vivid blue · cool · closest name: Deep Sky Blue

RGB
109, 176, 223
HSL
205°, 64%, 65%
CMYK
51, 21, 0, 13
Luminance
0.3963

At a glance

Every number on this page in one read: what #6db0df is made of, how bright it looks, and which way it leans.

Hex
#6db0df
Hue
205°
blue
Saturation
64%
vivid
Lightness
65%
light
Brightness
87%
HSV value
Perceived
65%
weighted brightness
Luminance
0.3963
WCAG relative
Temperature
Cool
98/100 cool
Color family
Blue
Tone
Vivid
Best ink
Black
8.93:1
Closest name
Deep Sky Blue
ΔE2000 7.3
Where it sits
Hue205° of 360°
Saturation64%
Lightness65%
Temperature
Warm ← → Cool98% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Every format

HEX#6db0df
RGBrgb(109, 176, 223)
HSLhsl(205, 64%, 65%)
CMYKcmyk(51%, 21%, 0%, 13%)
LABlab(69.2 -8.4 -30.2)
LCHlch(69.2 31.3 254.5)
OKLCHoklch(0.731 0.097 240.5)
Decimal7188703
Display P3color(display-p3 0.427 0.690 0.875)

Copy-ready code

/* CSS */
color: #6db0df;
background-color: #6db0df;
/* Tailwind (arbitrary) */
class="text-[#6db0df] bg-[#6db0df]"
/* SCSS */
$brand: #6db0df;
/* SwiftUI */
Color(red: 0.427, green: 0.690, blue: 0.875)
/* Android */
Color.parseColor("#6db0df")
/* Flutter */
Color(0xFF6DB0DF)
/* Python / OpenCV (BGR) */
(223, 176, 109)

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 #6db0df · 8.93:1
Use #000000AAA at every size.
Aa
White text · 2.35:1
AA fail · AA large fail · AAA fail
Aa
Black text · 8.93:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #6db0df as text scores 2.35:1 on white and 8.93:1 on black.

Accessibility — WCAG contrast

Aa
#6db0df on white: 2.35:1
AA ✗ fail · AA-large · AAA
Aa
#6db0df on black: 8.93:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #9BB0E1
deuteranopia · #8CA4DE
tritanopia · #2DBCC0

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #6db0df is pinned to step 400; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4F8FB
#E8F1F7
#CBE1F1
#A3CDEB
#6db0df
#479BD7
#2C88C9
#2572A7
#1D5B86
#194461
#102A3D
Base = 400Lightest = 50 · #F4F8FBDarkest = 950 · #102A3D
:root {
  --brand-50: #F4F8FB;
  --brand-100: #E8F1F7;
  --brand-200: #CBE1F1;
  --brand-300: #A3CDEB;
  --brand-400: #6db0df;
  --brand-500: #479BD7;
  --brand-600: #2C88C9;
  --brand-700: #2572A7;
  --brand-800: #1D5B86;
  --brand-900: #194461;
  --brand-950: #102A3D;
  --brand: #6db0df;
  --brand-ink: #000000;
}

Colors that work with #6db0df

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#F4F8FA
Tinted page background
Border#C0DAED
Hairlines and dividers
Muted text#4B7A9B
Captions on the surface
Accent#AC3720
Second voice, not a rival
Dark variant#174769
Hover, pressed, headers
Light variant#EAF4FA
Selected rows, tints
Dark surface#141E24
Dark-mode background
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

How to use #6db0df

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
  • Card and section backgrounds
  • 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
  • White text placed on it
  • Pairing with a same-lightness hue — edges vibrate

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#DF9C6D
Analogous left#6DDFD5
Analogous right#6D77DF
Split-complement 1#DF6D77
Split-complement 2#DFD56D
Triadic 1#DF6DB0
Triadic 2#B0DF6D
Tetradic#D56DDF

RGB percentages

Red42.7%
Green69.0%
Blue87.5%

CMYK percentages

Cyan51.1%
Magenta21.1%
Yellow0.0%
Key (black)12.5%

Color previews

#6db0df text on a black background

contrast 8.93:1

Card sample

#6db0df text on a white background

contrast 2.35:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #6db0df;
Background color
Panel with #6db0df background
background-color: #6db0df;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #6db0df;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(109, 176, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(109, 176, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6db0df;
background: linear-gradient(135deg, #6db0df, #766DDF);

Monochromatic scale

Palettes built from #6db0df

Shades — darker

Tints — lighter

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.

#6db0df 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
SurfacesBadgesHighlightsEmpty states
Print note

Converts to four-color process without much drama. Proof it anyway.

#6db0df, answered

What color is #6db0df?

#6db0df is a light vivid blue, closest to Deep Sky Blue (ΔE2000 7.3). It sits at 205° on the hue wheel with 64% saturation and 65% lightness, which reads as cool.

What is the RGB value of #6db0df?

rgb(109, 176, 223) — 109 red, 176 green and 223 blue out of 255, or 42.7% / 69% / 87.5% by channel.

Is #6db0df a light or a dark color?

It is a mid-tone. Relative luminance is 0.3963 and perceived brightness is 65%, so black text on it reaches 8.93:1.

Should I use black or white text on #6db0df?

Black. It scores 8.93:1 against #6db0df, versus 2.35:1 for white — AAA at any size.

What is the complementary color of #6db0df?

#DF9C6D sits directly opposite on the wheel. Softer options are the split-complements #DF6D77 and #DFD56D, which give the same contrast with far less vibration.

What colors go well with #6db0df?

For interface work: #F4F8FA as the surface, #C0DAED for borders, #4B7A9B for secondary text, #AC3720 as an accent and #174769 for hover and pressed states. For a palette, the analogous pair #6DDFD5 and #6D77DF stays calm, while #DF9C6D is the loudest partner.

What is #6db0df in CMYK for printing?

cmyk(51%, 21%, 0%, 13%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #6db0df warm or cool?

Cool — it scores 98 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #6DDADF; nudged cooler, #569BDC.

Work with #6db0df in the Color Lab