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cyan · cool

#77bbc3

a balanced, soft cyan · cool · closest name: Cadet Blue

Token name suggestion: Atlas Teal

RGB
119, 187, 195
HSL
186°, 39%, 62%
CMYK
39, 4, 0, 24
Luminance
0.4340

#77bbc3 is a balanced soft cyan, 186° on the wheel and 90/100 on the cool side. Put black text on it (9.68:1). As text it scores 2.17:1 on white — use #3B7D85 instead. Nearest name is Cadet Blue, nearest Tailwind family is cyan.

hsl(186 39% 62%)rgb(119 187 195)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #77bbc3 is made of, how bright it looks, and which way it leans.

Hex
#77bbc3
Hue
186°
cyan
Saturation
39%
soft
Lightness
62%
balanced
Brightness
76%
HSV value
Perceived
67%
weighted brightness
Luminance
0.4340
WCAG relative
Temperature
Cool
90/100 cool
Color family
Cyan
Tone
Soft
Best ink
Black
9.68:1
Closest name
Cadet Blue
ΔE2000 8.9
Chroma
22.2
LCH, 0–130ish
OKLCH L
0.750
perceptual lightness
Tailwind
cyan
500 · ΔE 8.4
Web-safe
#66CCCC
nearest of 216
Where it sits
Hue186° of 360°
Saturation39%
Lightness62%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #77bbc3.

Temperature
Warm ← → Cool90% 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
Red9%
Green82%
Blue9%

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

Every format

HEX#77bbc3
HEX (8-digit)#77bbc3ff
RGBrgb(119, 187, 195)
RGBArgba(119, 187, 195, 1)
HSLhsl(186, 39%, 62%)
HSV / HSBhsv(186, 39%, 76%)
HWBhwb(186 47% 24%)
CMYKcmyk(39%, 4%, 0%, 24%)
LABlab(71.8 -19.4 -10.8)
LCHlch(71.8 22.2 209.2)
OKLCHoklch(0.750 0.070 205.3)
XYZ (D65)xyz(35.22, 43.40, 58.14)
Decimal7846851
Display P3color(display-p3 0.467 0.733 0.765)
Web-safe#66CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #77bbc3;
background-color: #77bbc3;
/* CSS custom property */
--brand: #77bbc3;
/* Tailwind (arbitrary) */
class="text-[#77bbc3] bg-[#77bbc3]"
/* SCSS */
$brand: #77bbc3;
/* SwiftUI */
Color(red: 0.467, green: 0.733, blue: 0.765)
/* UIKit */
UIColor(red: 0.467, green: 0.733, blue: 0.765, alpha: 1)
/* Android XML */
<color name="brand">#77BBC3</color>
/* Android Compose */
Color(0xFF77BBC3)
/* Flutter */
Color(0xFF77BBC3)
/* Python / OpenCV (BGR) */
(195, 187, 119)
/* Python / PIL (RGB) */
(119, 187, 195)
/* Java AWT */
new Color(119, 187, 195)
/* .NET */
Color.FromArgb(255, 119, 187, 195)
/* OpenGL / Unity (0–1) */
(0.4667f, 0.7333f, 0.7647f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{119,187,195}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #77bbc3 85%, white);
border-color: color-mix(in oklab, #77bbc3 40%, transparent);
/* theme-aware in one line */
color: light-dark(#275358, #D5EAEC);
/* relative colour syntax */
--hover: hsl(from #77bbc3 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: #F5F9FA;
  --brand-100: #EBF3F4;
  --brand-200: #D3E7E9;
  --brand-300: #B1D8DD;
  --brand-400: #77bbc3;
  --brand-500: #63B1BA;
  --brand-600: #4BA0AA;
  --brand-700: #3E858E;
  --brand-800: #326B71;
  --brand-900: #274E53;
  --brand-950: #193134;
  --brand: #77bbc3;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C6E3E6;
  --brand-hover: #5EAFB8;
  --brand-pressed: #4A9FA8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142324;
    --brand-ink: #D5EAEC;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F9FA',
        100: '#EBF3F4',
        200: '#D3E7E9',
        300: '#B1D8DD',
        400: '#77bbc3',
        500: '#63B1BA',
        600: '#4BA0AA',
        700: '#3E858E',
        800: '#326B71',
        900: '#274E53',
        950: '#193134',
        DEFAULT: '#77bbc3',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F9FA,
  '100': #EBF3F4,
  '200': #D3E7E9,
  '300': #B1D8DD,
  '400': #77bbc3,
  '500': #63B1BA,
  '600': #4BA0AA,
  '700': #3E858E,
  '800': #326B71,
  '900': #274E53,
  '950': #193134,
);
$brand-base: #77bbc3;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F9FA", "$type": "color" },
      "100": { "$value": "#EBF3F4", "$type": "color" },
      "200": { "$value": "#D3E7E9", "$type": "color" },
      "300": { "$value": "#B1D8DD", "$type": "color" },
      "400": { "$value": "#77bbc3", "$type": "color" },
      "500": { "$value": "#63B1BA", "$type": "color" },
      "600": { "$value": "#4BA0AA", "$type": "color" },
      "700": { "$value": "#3E858E", "$type": "color" },
      "800": { "$value": "#326B71", "$type": "color" },
      "900": { "$value": "#274E53", "$type": "color" },
      "950": { "$value": "#193134", "$type": "color" }
    },
    "brandInk": { "$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 #77bbc3 · 9.68:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.17:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.68:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #77bbc3 as text scores 2.17:1 on white and 9.68:1 on black.
Best tinted ink on it, if plain black or white feels flat: #275358 at 3.93:1.

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
#3B7D85 · 4.71:1
AA on white−24% L
#3B7D85
The quick fox
#2D5F65 · 7.15:1
AAA on white−33% L
#2D5F65
The quick fox
#77bbc3 · 9.68:1
AA on blackalready passes
#77bbc3
The quick fox
#77bbc3 · 9.68:1
AAA on blackalready passes
#77bbc3

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #4A9FA8 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
#77bbc3 on white: 2.17:1
AA ✗ fail · AA-large · AAA
Aa
#77bbc3 on black: 9.68:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #77bbc3 as text on that neutral, and that neutral as text on #77bbc3.

NeutralRatioBoth directions
White2.17:1AaAa
Slate 502.07:1AaAa
Slate 1001.98:1AaAa
Slate 2001.76:1AaAa
Slate 3001.46:1AaAa
Slate 4001.18:1AaAa
Slate 5002.19:1AaAa
Slate 6003.49:1AaAa
Slate 7004.77:1AaAa
Slate 8006.74:1AaAa
Slate 9008.23:1AaAa
Black9.68:1AaAa
Colour vision deficiency
true color
protanopia · #B1B6C4
deuteranopia · #A4ACC3
tritanopia · #57C0BD

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. #77bbc3 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.

#F5F9FA
#EBF3F4
#D3E7E9
#B1D8DD
#77bbc3
#63B1BA
#4BA0AA
#3E858E
#326B71
#274E53
#193134
Base = 400Lightest = 50 · #F5F9FADarkest = 950 · #193134Text 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 0.017 205.3);
  --brand-100: oklch(0.94 0.028 205.3);
  --brand-200: oklch(0.88 0.042 205.3);
  --brand-300: oklch(0.80 0.054 205.3);
  --brand-400: oklch(0.72 0.064 205.3);
  --brand-500: oklch(0.64 0.070 205.3);
  --brand-600: oklch(0.56 0.070 205.3);
  --brand-700: oklch(0.48 0.066 205.3);
  --brand-800: oklch(0.40 0.059 205.3);
  --brand-900: oklch(0.32 0.049 205.3);
  --brand-950: oklch(0.24 0.038 205.3);
}

Colors that work with #77bbc3

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#F4FAFA
Tinted page background
Border#C6E3E6
Hairlines and dividers
Muted text#4B929B
Captions on the surface
Accent#C7737F
Second voice, not a rival
Dark variant#275358
Hover, pressed, headers
Light variant#EDF6F7
Selected rows, tints
Dark surface#142324
Dark-mode background
Hover#5EAFB8
One step down in lightness
Pressed#4A9FA8
Two steps down
Disabled#CCDCDE
Chroma pulled out
Focus ring#7CC9D2
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 #77bbc3

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

Works well for
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • 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 #275358
Safe as a 1px border on white
No — use #4A9FA8

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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • FormalityMedium
  • EnergyMedium
  • Weight38/100
  • 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#C37F77
Analogous left#77C3A5
Analogous right#7795C3
Split-complement 1#C37795
Split-complement 2#C3A577
Triadic 1#C377BB
Triadic 2#BBC377
Tetradic#A577C3
On the wheel
Base+30°−30°+120°+240°+180°186°

#77bbc3 sits at 186°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red46.7%
Green73.3%
Blue76.5%
R · 0–255
119
0x77
G · 0–255
187
0xbb
B · 0–255
195
0xc3

CMYK percentages

Cyan39.0%
Magenta4.1%
Yellow0.0%
Key (black)23.5%

Total ink coverage is 67%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#77bbc3 text on a black background

contrast 9.68:1

Card sample

#77bbc3 text on a white background

contrast 2.17:1

Card sample

#77bbc3 on grey

1.98:1

#77bbc3 on its own surface

2.06:1

#77bbc3 on its dark surface

7.47:1

CSS3 live lab

Text font color

The quick brown fox

color: #77bbc3;
Background color
Panel with #77bbc3 background
background-color: #77bbc3;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #77bbc3;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(119, 187, 195, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(119, 187, 195, 0.45);
Border & gradient
Gradient panel
border: 3px solid #77bbc3;
background: linear-gradient(135deg, #77bbc3, #7788C3);
Gradient text

Gradient headline

background: linear-gradient(90deg, #77bbc3, #7977C3);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #77bbc3;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #77bbc3;
caret-color: #77bbc3;
Left rule
Pull quote or callout
border-left: 4px solid #77bbc3;
Ring + tint
Selected chip
background: #EDF6F7;
box-shadow: inset 0 0 0 2px #77bbc3;
Conic badge
68%
background: conic-gradient(#77bbc3 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #77bbc3 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(119, 187, 195, 0.5)
rgb(119 187 195 / 50%)
#77bbc380
hsl(186 39% 62% / 50%)
color-mix(in srgb, #77bbc3 50%, transparent)
Alpha8-digit hexFlat on white
10%#77bbc31a#F1F8F9
20%#77bbc333#E4F1F3
40%#77bbc366#C9E4E7
60%#77bbc399#ADD6DB
80%#77bbc3cc#92C9CF

Gradients from #77bbc3

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, #A2D0D6, #77bbc3 45%, #275358);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #77bbc3, #626FBA);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #77bbc3, #C37F77);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #B7DBDF 0%, #77bbc3 45%, #275358 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAFA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #9AD3B8 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #8CA0CC 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #275358 0%, transparent 65%), #77bbc3;

Monochromatic scale

Palettes built from #77bbc3

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.

#77bbc3 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.

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 9.68:1.

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.

#77bbc3, answered

What color is #77bbc3?

#77bbc3 is a balanced soft cyan, closest to Cadet Blue (ΔE2000 8.9). It sits at 186° on the hue wheel with 39% saturation and 62% lightness, which reads as cool.

What is the RGB value of #77bbc3?

rgb(119, 187, 195) — 119 red, 187 green and 195 blue out of 255, or 46.7% / 73.3% / 76.5% by channel.

What is #77bbc3 in HSL and HSV?

hsl(186, 39%, 62%) and hsv(186, 39%, 76%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #77bbc3 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4340 and perceived brightness is 67%, so black text on it reaches 9.68:1.

Should I use black or white text on #77bbc3?

Black. It scores 9.68:1 against #77bbc3, versus 2.17:1 for white — AAA at any size.

Is #77bbc3 accessible on a white background?

#77bbc3 on white scores 2.17:1, which fails WCAG AA at every size. Darken it to #3B7D85 to reach 4.5:1, or #2D5F65 for 7:1.

What is the complementary color of #77bbc3?

#C37F77 sits directly opposite on the wheel. Softer options are the split-complements #C37795 and #C3A577, which give the same contrast with far less vibration.

What colors go well with #77bbc3?

For interface work: #F4FAFA as the surface, #C6E3E6 for borders, #4B929B for secondary text, #C7737F as an accent and #275358 for hover and pressed states. For a palette, the analogous pair #77C3A5 and #7795C3 stays calm, while #C37F77 is the loudest partner.

What is #77bbc3 in CMYK for printing?

cmyk(39%, 4%, 0%, 24%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #77bbc3 warm or cool?

Cool — it scores 90 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #77C3AF; nudged cooler, #75A4C5.

Which Tailwind color is closest to #77bbc3?

The cyan family — its 500 step is #06b6d4, ΔE2000 8.4 away. That is a visible difference, so define #77bbc3 as a custom token rather than reaching for the built-in.

How do I use #77bbc3 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#77bbc3] or text-[#77bbc3], 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 #77bbc3 with 50% opacity?

rgba(119, 187, 195, 0.5), or #77bbc380 in eight-digit hex. Over white that composites to #BBDDE1; over black, #3C5E62.

Is #77bbc3 a web-safe color?

No. The nearest web-safe colour is #66CCCC, ΔE2000 6.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #77bbc3 mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this moderate chroma the association is present but not shouted.

What gradient works with #77bbc3?

The safest is same-hue elevation: linear-gradient(135deg, #A2D0D6, #77bbc3 45%, #275358). For more colour, a short hue run to #626FBA keeps it rich without turning muddy.

Work with #77bbc3 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #77bbc3 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.