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#65bccf

a balanced, vivid cyan · cool · closest name: Sky Blue

RGB
101, 188, 207
HSL
191°, 53%, 60%
CMYK
51, 9, 0, 19
Luminance
0.4324

At a glance

Every number on this page in one read: what #65bccf is made of, how bright it looks, and which way it leans.

Hex
#65bccf
Hue
191°
cyan
Saturation
53%
vivid
Lightness
60%
balanced
Brightness
81%
HSV value
Perceived
66%
weighted brightness
Luminance
0.4324
WCAG relative
Temperature
Cool
92/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
9.65:1
Closest name
Sky Blue
ΔE2000 7.2
Where it sits
Hue191° of 360°
Saturation53%
Lightness60%
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.

Every format

HEX#65bccf
RGBrgb(101, 188, 207)
HSLhsl(191, 53%, 60%)
CMYKcmyk(51%, 9%, 0%, 19%)
LABlab(71.7 -21.0 -17.6)
LCHlch(71.7 27.5 220.0)
OKLCHoklch(0.748 0.088 213.6)
Decimal6667471
Display P3color(display-p3 0.396 0.737 0.812)

Copy-ready code

/* CSS */
color: #65bccf;
background-color: #65bccf;
/* Tailwind (arbitrary) */
class="text-[#65bccf] bg-[#65bccf]"
/* SCSS */
$brand: #65bccf;
/* SwiftUI */
Color(red: 0.396, green: 0.737, blue: 0.812)
/* Android */
Color.parseColor("#65bccf")
/* Flutter */
Color(0xFF65BCCF)
/* Python / OpenCV (BGR) */
(207, 188, 101)

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 #65bccf · 9.65:1
Use #000000AAA at every size.
Aa
White text · 2.18:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.65:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #65bccf as text scores 2.18:1 on white and 9.65:1 on black.

Accessibility — WCAG contrast

Aa
#65bccf on white: 2.18:1
AA ✗ fail · AA-large · AAA
Aa
#65bccf on black: 9.65:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #AEB7D0
deuteranopia · #9DAACF
tritanopia · #1EC4C2

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #65bccf 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.

#F4F9FA
#E9F4F6
#CFE8ED
#A9DAE4
#7FC7D7
#65bccf
#3AA4BB
#30889C
#276D7C
#20505B
#143239
Base = 500Lightest = 50 · #F4F9FADarkest = 950 · #143239
:root {
  --brand-50: #F4F9FA;
  --brand-100: #E9F4F6;
  --brand-200: #CFE8ED;
  --brand-300: #A9DAE4;
  --brand-400: #7FC7D7;
  --brand-500: #65bccf;
  --brand-600: #3AA4BB;
  --brand-700: #30889C;
  --brand-800: #276D7C;
  --brand-900: #20505B;
  --brand-950: #143239;
  --brand: #65bccf;
  --brand-ink: #000000;
}

Colors that work with #65bccf

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#C1E4EC
Hairlines and dividers
Muted text#4B8C9B
Captions on the surface
Accent#D36169
Second voice, not a rival
Dark variant#1E5561
Hover, pressed, headers
Light variant#ECF7F9
Selected rows, tints
Dark surface#142124
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 #65bccf

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
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

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#CF7865
Analogous left#65CFAD
Analogous right#6587CF
Split-complement 1#CF6587
Split-complement 2#CFAD65
Triadic 1#CF65BC
Triadic 2#BCCF65
Tetradic#AD65CF

RGB percentages

Red39.6%
Green73.7%
Blue81.2%

CMYK percentages

Cyan51.2%
Magenta9.2%
Yellow0.0%
Key (black)18.8%

Color previews

#65bccf text on a black background

contrast 9.65:1

Card sample

#65bccf text on a white background

contrast 2.18:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #65bccf;
Background color
Panel with #65bccf background
background-color: #65bccf;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #65bccf;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(101, 188, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(101, 188, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #65bccf;
background: linear-gradient(135deg, #65bccf, #6575CF);

Monochromatic scale

Palettes built from #65bccf

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.

#65bccf 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

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

#65bccf, answered

What color is #65bccf?

#65bccf is a balanced vivid cyan, closest to Sky Blue (ΔE2000 7.2). It sits at 191° on the hue wheel with 53% saturation and 60% lightness, which reads as cool.

What is the RGB value of #65bccf?

rgb(101, 188, 207) — 101 red, 188 green and 207 blue out of 255, or 39.6% / 73.7% / 81.2% by channel.

Is #65bccf a light or a dark color?

It is a mid-tone. Relative luminance is 0.4324 and perceived brightness is 66%, so black text on it reaches 9.65:1.

Should I use black or white text on #65bccf?

Black. It scores 9.65:1 against #65bccf, versus 2.18:1 for white — AAA at any size.

What is the complementary color of #65bccf?

#CF7865 sits directly opposite on the wheel. Softer options are the split-complements #CF6587 and #CFAD65, which give the same contrast with far less vibration.

What colors go well with #65bccf?

For interface work: #F4F9FA as the surface, #C1E4EC for borders, #4B8C9B for secondary text, #D36169 as an accent and #1E5561 for hover and pressed states. For a palette, the analogous pair #65CFAD and #6587CF stays calm, while #CF7865 is the loudest partner.

What is #65bccf in CMYK for printing?

cmyk(51%, 9%, 0%, 19%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #65bccf 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 #65CFBB; nudged cooler, #63A4D1.

Work with #65bccf in the Color Lab