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cyan · cool

#246771

a dark, vivid cyan · cool · closest name: Dark Slate Gray

Token name suggestion: Shadow Teal

RGB
36, 103, 113
HSL
188°, 52%, 29%
CMYK
68, 9, 0, 56
Luminance
0.1127

#246771 is a dark vivid cyan, 188° on the wheel and 91/100 on the cool side. Put white text on it (6.45:1). As text it scores 6.45:1 on white — safe at any size. Nearest name is Dark Slate Gray, nearest Tailwind family is slate.

hsl(188 52% 29%)rgb(36 103 113)Base step 800AA inkCool

At a glance

Every number on this page in one read: what #246771 is made of, how bright it looks, and which way it leans.

Hex
#246771
Hue
188°
cyan
Saturation
52%
vivid
Lightness
29%
dark
Brightness
44%
HSV value
Perceived
35%
weighted brightness
Luminance
0.1127
WCAG relative
Temperature
Cool
91/100 cool
Color family
Cyan
Tone
Vivid
Best ink
White
6.45:1
Closest name
Dark Slate Gray
ΔE2000 9.6
Chroma
21.0
LCH, 0–130ish
OKLCH L
0.476
perceptual lightness
Tailwind
slate
500 · ΔE 17
Web-safe
#336666
nearest of 216
Where it sits
Hue188° of 360°
Saturation52%
Lightness29%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #246771.

Temperature
Warm ← → Cool91% 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
Red3%
Green86%
Blue11%

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

Every format

HEX#246771
HEX (8-digit)#246771ff
RGBrgb(36, 103, 113)
RGBArgba(36, 103, 113, 1)
HSLhsl(188, 52%, 29%)
HSV / HSBhsv(188, 68%, 44%)
HWBhwb(188 14% 56%)
CMYKcmyk(68%, 9%, 0%, 56%)
LABlab(40.0 -17.4 -11.8)
LCHlch(40.0 21.0 214.2)
OKLCHoklch(0.476 0.068 208.9)
XYZ (D65)xyz(8.56, 11.27, 17.34)
Decimal2385777
Display P3color(display-p3 0.141 0.404 0.443)
Web-safe#336666

Copy-ready code

every platformclick to select
/* CSS */
color: #246771;
background-color: #246771;
/* CSS custom property */
--brand: #246771;
/* Tailwind (arbitrary) */
class="text-[#246771] bg-[#246771]"
/* SCSS */
$brand: #246771;
/* SwiftUI */
Color(red: 0.141, green: 0.404, blue: 0.443)
/* UIKit */
UIColor(red: 0.141, green: 0.404, blue: 0.443, alpha: 1)
/* Android XML */
<color name="brand">#246771</color>
/* Android Compose */
Color(0xFF246771)
/* Flutter */
Color(0xFF246771)
/* Python / OpenCV (BGR) */
(113, 103, 36)
/* Python / PIL (RGB) */
(36, 103, 113)
/* Java AWT */
new Color(36, 103, 113)
/* .NET */
Color.FromArgb(255, 36, 103, 113)
/* OpenGL / Unity (0–1) */
(0.1412f, 0.4039f, 0.4431f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{36,103,113}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #246771 85%, white);
border-color: color-mix(in oklab, #246771 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1F5861, #D3EBEE);
/* relative colour syntax */
--hover: hsl(from #246771 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: #F4FAFA;
  --brand-100: #EAF4F6;
  --brand-200: #CFE9ED;
  --brand-300: #AADCE4;
  --brand-400: #7FCBD6;
  --brand-500: #55BAC9;
  --brand-600: #3BA9BA;
  --brand-700: #318D9B;
  --brand-800: #246771;
  --brand-900: #20535A;
  --brand-950: #143438;
  --brand: #246771;
  --brand-ink: #ffffff;
  --brand-surface: #F4FAFA;
  --brand-border: #C1E6EB;
  --brand-hover: #1B4E56;
  --brand-pressed: #13363B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142224;
    --brand-ink: #D3EBEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FAFA',
        100: '#EAF4F6',
        200: '#CFE9ED',
        300: '#AADCE4',
        400: '#7FCBD6',
        500: '#55BAC9',
        600: '#3BA9BA',
        700: '#318D9B',
        800: '#246771',
        900: '#20535A',
        950: '#143438',
        DEFAULT: '#246771',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FAFA,
  '100': #EAF4F6,
  '200': #CFE9ED,
  '300': #AADCE4,
  '400': #7FCBD6,
  '500': #55BAC9,
  '600': #3BA9BA,
  '700': #318D9B,
  '800': #246771,
  '900': #20535A,
  '950': #143438,
);
$brand-base: #246771;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FAFA", "$type": "color" },
      "100": { "$value": "#EAF4F6", "$type": "color" },
      "200": { "$value": "#CFE9ED", "$type": "color" },
      "300": { "$value": "#AADCE4", "$type": "color" },
      "400": { "$value": "#7FCBD6", "$type": "color" },
      "500": { "$value": "#55BAC9", "$type": "color" },
      "600": { "$value": "#3BA9BA", "$type": "color" },
      "700": { "$value": "#318D9B", "$type": "color" },
      "800": { "$value": "#246771", "$type": "color" },
      "900": { "$value": "#20535A", "$type": "color" },
      "950": { "$value": "#143438", "$type": "color" }
    },
    "brandInk": { "$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 #246771 · 6.45:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 6.45:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 3.25:1
AA fail · AA large pass · AAA fail
Reading the other direction: #246771 as text scores 6.45:1 on white and 3.25:1 on black.
Best tinted ink on it, if plain black or white feels flat: #ECF7F9 at 5.91:1.

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
#246771 · 6.45:1
AA on whitealready passes
#246771
The quick fox
#226069 · 7.13:1
AAA on white−2% L
#226069
The quick fox
#2D808C · 4.58:1
AA on black+7% L
#2D808C
The quick fox
#39A3B3 · 7.06:1
AAA on black+17% L
#39A3B3

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #246771 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
#246771 on white: 6.45:1
AA ✓ pass · AA-large · AAA
Aa
#246771 on black: 3.25:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #246771 as text on that neutral, and that neutral as text on #246771.

NeutralRatioBoth directions
White6.45:1AaAa
Slate 506.17:1AaAa
Slate 1005.89:1AaAa
Slate 2005.24:1AaAa
Slate 3004.35:1AaAa
Slate 4002.52:1AaAa
Slate 5001.36:1AaAa
Slate 6001.17:1AaAa
Slate 7001.60:1AaAa
Slate 8002.27:1AaAa
Slate 9002.77:1AaAa
Black3.25:1AaAa
Colour vision deficiency
true color
protanopia · #5E6372
deuteranopia · #535B71
tritanopia · #006C6A

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. #246771 is pinned to step 800; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4FAFA
#EAF4F6
#CFE9ED
#AADCE4
#7FCBD6
#55BAC9
#3BA9BA
#318D9B
#246771
#20535A
#143438
Base = 800Lightest = 50 · #F4FAFADarkest = 950 · #143438Text 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 0.017 208.9);
  --brand-100: oklch(0.94 0.027 208.9);
  --brand-200: oklch(0.88 0.041 208.9);
  --brand-300: oklch(0.80 0.053 208.9);
  --brand-400: oklch(0.72 0.062 208.9);
  --brand-500: oklch(0.64 0.068 208.9);
  --brand-600: oklch(0.56 0.068 208.9);
  --brand-700: oklch(0.48 0.064 208.9);
  --brand-800: oklch(0.40 0.057 208.9);
  --brand-900: oklch(0.32 0.047 208.9);
  --brand-950: oklch(0.24 0.037 208.9);
}

Colors that work with #246771

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#F4FAFA
Tinted page background
Border#C1E6EB
Hairlines and dividers
Muted text#4B909B
Captions on the surface
Accent#74212B
Second voice, not a rival
Dark variant#1F5861
Hover, pressed, headers
Light variant#ECF7F9
Selected rows, tints
Dark surface#142224
Dark-mode background
Hover#1B4E56
One step down in lightness
Pressed#13363B
Two steps down
Disabled#67979E
Chroma pulled out
Focus ring#207B89
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 #246771

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
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • 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
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.

cleantechnicalfreshclinical

Cyan reads as water, air and infrastructure: cool, hygienic, engineered.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. 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
  • EnergyMedium-high
  • Weight71/100
  • 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#712E24
Analogous left#247154
Analogous right#244071
Split-complement 1#712440
Split-complement 2#715424
Triadic 1#712467
Triadic 2#677124
Tetradic#542471
On the wheel
Base+30°−30°+120°+240°+180°188°

#246771 sits at 188°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red14.1%
Green40.4%
Blue44.3%
R · 0–255
36
0x24
G · 0–255
103
0x67
B · 0–255
113
0x71

CMYK percentages

Cyan68.1%
Magenta8.8%
Yellow0.0%
Key (black)55.7%

Total ink coverage is 133%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#246771 text on a black background

contrast 3.25:1

Card sample

#246771 text on a white background

contrast 6.45:1

Card sample

#246771 on grey

5.89:1

#246771 on its own surface

6.12:1

#246771 on its dark surface

2.53:1

CSS3 live lab

Text font color

The quick brown fox

color: #246771;
Background color
Panel with #246771 background
background-color: #246771;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #246771;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(36, 103, 113, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(36, 103, 113, 0.45);
Border & gradient
Gradient panel
border: 3px solid #246771;
background: linear-gradient(135deg, #246771, #243471);
Gradient text

Gradient headline

background: linear-gradient(90deg, #246771, #282471);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #246771;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #246771;
caret-color: #246771;
Left rule
Pull quote or callout
border-left: 4px solid #246771;
Ring + tint
Selected chip
background: #ECF7F9;
box-shadow: inset 0 0 0 2px #246771;
Conic badge
68%
background: conic-gradient(#246771 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #246771 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(36, 103, 113, 0.5)
rgb(36 103 113 / 50%)
#24677180
hsl(188 52% 29% / 50%)
color-mix(in srgb, #246771 50%, transparent)
Alpha8-digit hexFlat on white
10%#2467711a#E9F0F1
20%#24677133#D3E1E3
40%#24677166#A7C2C6
60%#24677199#7CA4AA
80%#246771cc#50858D

Gradients from #246771

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, #33919F, #246771 45%, #1F5861);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #246771, #1D245A);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #246771, #712E24);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #3AA6B7 0%, #246771 45%, #1F5861 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%, #309869 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #2B4688 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1F5861 0%, transparent 65%), #246771;

Monochromatic scale

Palettes built from #246771

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.

#246771 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

Too dim on dark surfaces at 3.25:1 — lift it to #2D808C 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.

#246771, answered

What color is #246771?

#246771 is a dark vivid cyan, closest to Dark Slate Gray (ΔE2000 9.6). It sits at 188° on the hue wheel with 52% saturation and 29% lightness, which reads as cool.

What is the RGB value of #246771?

rgb(36, 103, 113) — 36 red, 103 green and 113 blue out of 255, or 14.1% / 40.4% / 44.3% by channel.

What is #246771 in HSL and HSV?

hsl(188, 52%, 29%) and hsv(188, 68%, 44%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #246771 a light or a dark color?

It is a dark color. Relative luminance is 0.1127 and perceived brightness is 35%, so white text on it reaches 6.45:1.

Should I use black or white text on #246771?

White. It scores 6.45:1 against #246771, versus 3.25:1 for black — AA at any size.

Is #246771 accessible on a white background?

#246771 on white scores 6.45:1, which clears AA at every size but not AAA.

What is the complementary color of #246771?

#712E24 sits directly opposite on the wheel. Softer options are the split-complements #712440 and #715424, which give the same contrast with far less vibration.

What colors go well with #246771?

For interface work: #F4FAFA as the surface, #C1E6EB for borders, #4B909B for secondary text, #74212B as an accent and #1F5861 for hover and pressed states. For a palette, the analogous pair #247154 and #244071 stays calm, while #712E24 is the loudest partner.

What is #246771 in CMYK for printing?

cmyk(68%, 9%, 0%, 56%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #246771 warm or cool?

Cool — it scores 91 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #24715F; nudged cooler, #225172.

Which Tailwind color is closest to #246771?

The slate family — its 500 step is #64748b, ΔE2000 17 away. That is a visible difference, so define #246771 as a custom token rather than reaching for the built-in.

How do I use #246771 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#246771] or text-[#246771], 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 #246771 with 50% opacity?

rgba(36, 103, 113, 0.5), or #24677180 in eight-digit hex. Over white that composites to #92B3B8; over black, #123439.

Is #246771 a web-safe color?

No. The nearest web-safe colour is #336666, ΔE2000 4.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #246771 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 #246771?

The safest is same-hue elevation: linear-gradient(135deg, #33919F, #246771 45%, #1F5861). For more colour, a short hue run to #1D245A keeps it rich without turning muddy.

Work with #246771 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #246771 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.