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cyan · cool

#408677

a dark, soft cyan · cool · closest name: Dark Cyan

Token name suggestion: Slate Reef

RGB
64, 134, 119
HSL
167°, 35%, 39%
CMYK
52, 0, 11, 48
Luminance
0.1947

#408677 is a dark soft cyan, 167° on the wheel and 82/100 on the cool side. Put black text on it (4.89:1). As text it scores 4.29:1 on white — large text only. Nearest name is Dark Cyan, nearest Tailwind family is teal.

hsl(167 35% 39%)rgb(64 134 119)Base step 700AA inkCool

At a glance

Every number on this page in one read: what #408677 is made of, how bright it looks, and which way it leans.

Hex
#408677
Hue
167°
cyan
Saturation
35%
soft
Lightness
39%
dark
Brightness
53%
HSV value
Perceived
45%
weighted brightness
Luminance
0.1947
WCAG relative
Temperature
Cool
82/100 cool
Color family
Cyan
Tone
Soft
Best ink
Black
4.89:1
Closest name
Dark Cyan
ΔE2000 7.3
Chroma
26.0
LCH, 0–130ish
OKLCH L
0.570
perceptual lightness
Tailwind
teal
500 · ΔE 15.9
Web-safe
#339966
nearest of 216
Where it sits
Hue167° of 360°
Saturation35%
Lightness39%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #408677.

Temperature
Warm ← → Cool82% 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
Red6%
Green88%
Blue7%

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

Every format

HEX#408677
HEX (8-digit)#408677ff
RGBrgb(64, 134, 119)
RGBArgba(64, 134, 119, 1)
HSLhsl(167, 35%, 39%)
HSV / HSBhsv(167, 52%, 53%)
HWBhwb(167 25% 47%)
CMYKcmyk(52%, 0%, 11%, 48%)
LABlab(51.2 -25.9 1.3)
LCHlch(51.2 26.0 177.0)
OKLCHoklch(0.570 0.075 177.6)
XYZ (D65)xyz(13.97, 19.47, 20.47)
Decimal4228727
Display P3color(display-p3 0.251 0.525 0.467)
Web-safe#339966

Copy-ready code

every platformclick to select
/* CSS */
color: #408677;
background-color: #408677;
/* CSS custom property */
--brand: #408677;
/* Tailwind (arbitrary) */
class="text-[#408677] bg-[#408677]"
/* SCSS */
$brand: #408677;
/* SwiftUI */
Color(red: 0.251, green: 0.525, blue: 0.467)
/* UIKit */
UIColor(red: 0.251, green: 0.525, blue: 0.467, alpha: 1)
/* Android XML */
<color name="brand">#408677</color>
/* Android Compose */
Color(0xFF408677)
/* Flutter */
Color(0xFF408677)
/* Python / OpenCV (BGR) */
(119, 134, 64)
/* Python / PIL (RGB) */
(64, 134, 119)
/* Java AWT */
new Color(64, 134, 119)
/* .NET */
Color.FromArgb(255, 64, 134, 119)
/* OpenGL / Unity (0–1) */
(0.2510f, 0.5255f, 0.4667f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{64,134,119}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #408677 85%, white);
border-color: color-mix(in oklab, #408677 40%, transparent);
/* theme-aware in one line */
color: light-dark(#29564D, #D6EBE7);
/* relative colour syntax */
--hover: hsl(from #408677 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: #F5F9F9;
  --brand-100: #EBF4F2;
  --brand-200: #D4E8E4;
  --brand-300: #B3DBD2;
  --brand-400: #8DC9BC;
  --brand-500: #67B7A5;
  --brand-600: #4FA693;
  --brand-700: #408677;
  --brand-800: #356E62;
  --brand-900: #295149;
  --brand-950: #1A332D;
  --brand: #408677;
  --brand-ink: #000000;
  --brand-surface: #F5FAF9;
  --brand-border: #C8E5DE;
  --brand-hover: #346E61;
  --brand-pressed: #29564C;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142421;
    --brand-ink: #D6EBE7;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F9F9',
        100: '#EBF4F2',
        200: '#D4E8E4',
        300: '#B3DBD2',
        400: '#8DC9BC',
        500: '#67B7A5',
        600: '#4FA693',
        700: '#408677',
        800: '#356E62',
        900: '#295149',
        950: '#1A332D',
        DEFAULT: '#408677',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F9F9,
  '100': #EBF4F2,
  '200': #D4E8E4,
  '300': #B3DBD2,
  '400': #8DC9BC,
  '500': #67B7A5,
  '600': #4FA693,
  '700': #408677,
  '800': #356E62,
  '900': #295149,
  '950': #1A332D,
);
$brand-base: #408677;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F9F9", "$type": "color" },
      "100": { "$value": "#EBF4F2", "$type": "color" },
      "200": { "$value": "#D4E8E4", "$type": "color" },
      "300": { "$value": "#B3DBD2", "$type": "color" },
      "400": { "$value": "#8DC9BC", "$type": "color" },
      "500": { "$value": "#67B7A5", "$type": "color" },
      "600": { "$value": "#4FA693", "$type": "color" },
      "700": { "$value": "#408677", "$type": "color" },
      "800": { "$value": "#356E62", "$type": "color" },
      "900": { "$value": "#295149", "$type": "color" },
      "950": { "$value": "#1A332D", "$type": "color" }
    },
    "brandInk": { "$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 #408677 · 4.89:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.29:1
AA fail · AA large pass · AAA fail
Aa
Black text · 4.89:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #408677 as text scores 4.29:1 on white and 4.89:1 on black.
Best tinted ink on it, if plain black or white feels flat: #29564D at 1.93:1.

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
#3D7F71 · 4.70:1
AA on white−2% L
#3D7F71
The quick fox
#2E6055 · 7.19:1
AAA on white−11% L
#2E6055
The quick fox
#408677 · 4.89:1
AA on blackalready passes
#408677
The quick fox
#4FA592 · 7.13:1
AAA on black+9% L
#4FA592

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #408677 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
#408677 on white: 4.29:1
AA ✗ fail · AA-large · AAA
Aa
#408677 on black: 4.89:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #408677 as text on that neutral, and that neutral as text on #408677.

NeutralRatioBoth directions
White4.29:1AaAa
Slate 504.10:1AaAa
Slate 1003.92:1AaAa
Slate 2003.48:1AaAa
Slate 3002.89:1AaAa
Slate 4001.67:1AaAa
Slate 5001.11:1AaAa
Slate 6001.77:1AaAa
Slate 7002.41:1AaAa
Slate 8003.41:1AaAa
Slate 9004.16:1AaAa
Black4.89:1AaAa
Colour vision deficiency
true color
protanopia · #817F76
deuteranopia · #767778
tritanopia · #1E8881

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. #408677 is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F5F9F9
#EBF4F2
#D4E8E4
#B3DBD2
#8DC9BC
#67B7A5
#4FA693
#408677
#356E62
#295149
#1A332D
Base = 700Lightest = 50 · #F5F9F9Darkest = 950 · #1A332DText 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 0.019 177.6);
  --brand-100: oklch(0.94 0.030 177.6);
  --brand-200: oklch(0.88 0.045 177.6);
  --brand-300: oklch(0.80 0.058 177.6);
  --brand-400: oklch(0.72 0.069 177.6);
  --brand-500: oklch(0.64 0.075 177.6);
  --brand-600: oklch(0.56 0.075 177.6);
  --brand-700: oklch(0.48 0.070 177.6);
  --brand-800: oklch(0.40 0.063 177.6);
  --brand-900: oklch(0.32 0.052 177.6);
  --brand-950: oklch(0.24 0.041 177.6);
}

Colors that work with #408677

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#F5FAF9
Tinted page background
Border#C8E5DE
Hairlines and dividers
Muted text#4B9B8A
Captions on the surface
Accent#8A3C60
Second voice, not a rival
Dark variant#29564D
Hover, pressed, headers
Light variant#EEF7F5
Selected rows, tints
Dark surface#142421
Dark-mode background
Hover#346E61
One step down in lightness
Pressed#29564C
Two steps down
Disabled#85B1A8
Chroma pulled out
Focus ring#3C9F89
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 #408677

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

Works well for
  • Headings from 24px up on white
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Small text on white — under 4.5:1
  • 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
24px / 18.66px bold
Safe as a fill behind white type
No — use #29564D
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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • Weight61/100
  • 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#86404F
Analogous left#408654
Analogous right#407286
Split-complement 1#864072
Split-complement 2#865440
Triadic 1#774086
Triadic 2#867740
Tetradic#544086
On the wheel
Base+30°−30°+120°+240°+180°167°

#408677 sits at 167°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red25.1%
Green52.5%
Blue46.7%
R · 0–255
64
0x40
G · 0–255
134
0x86
B · 0–255
119
0x77

CMYK percentages

Cyan52.2%
Magenta0.0%
Yellow11.2%
Key (black)47.5%

Total ink coverage is 111%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#408677 text on a black background

contrast 4.89:1

Card sample

#408677 text on a white background

contrast 4.29:1

Card sample

#408677 on grey

3.92:1

#408677 on its own surface

4.07:1

#408677 on its dark surface

3.75:1

CSS3 live lab

Text font color

The quick brown fox

color: #408677;
Background color
Panel with #408677 background
background-color: #408677;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #408677;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(64, 134, 119, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 134, 119, 0.45);
Border & gradient
Gradient panel
border: 3px solid #408677;
background: linear-gradient(135deg, #408677, #406686);
Gradient text

Gradient headline

background: linear-gradient(90deg, #408677, #405586);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #408677;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #408677;
caret-color: #408677;
Left rule
Pull quote or callout
border-left: 4px solid #408677;
Ring + tint
Selected chip
background: #EEF7F5;
box-shadow: inset 0 0 0 2px #408677;
Conic badge
68%
background: conic-gradient(#408677 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #408677 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(64, 134, 119, 0.5)
rgb(64 134 119 / 50%)
#40867780
hsl(167 35% 39% / 50%)
color-mix(in srgb, #408677 50%, transparent)
Alpha8-digit hexFlat on white
10%#4086771a#ECF3F1
20%#40867733#D9E7E4
40%#40867766#B3CFC9
60%#40867799#8CB6AD
80%#408677cc#669E92

Gradients from #408677

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, #55AE9B, #408677 45%, #29564D);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #408677, #365271);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #408677, #86404F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #6AB8A7 0%, #408677 45%, #29564D 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF9, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #50A862 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #4A7D9B 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #29564D 0%, transparent 65%), #408677;

Monochromatic scale

Palettes built from #408677

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.

#408677 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 4.89:1.

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.

#408677, answered

What color is #408677?

#408677 is a dark soft cyan, closest to Dark Cyan (ΔE2000 7.3). It sits at 167° on the hue wheel with 35% saturation and 39% lightness, which reads as cool.

What is the RGB value of #408677?

rgb(64, 134, 119) — 64 red, 134 green and 119 blue out of 255, or 25.1% / 52.5% / 46.7% by channel.

What is #408677 in HSL and HSV?

hsl(167, 35%, 39%) and hsv(167, 52%, 53%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #408677 a light or a dark color?

It is a mid-tone. Relative luminance is 0.1947 and perceived brightness is 45%, so black text on it reaches 4.89:1.

Should I use black or white text on #408677?

Black. It scores 4.89:1 against #408677, versus 4.29:1 for white — AA at any size.

Is #408677 accessible on a white background?

#408677 on white scores 4.29:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #3D7F71 to reach 4.5:1, or #2E6055 for 7:1.

What is the complementary color of #408677?

#86404F sits directly opposite on the wheel. Softer options are the split-complements #864072 and #865440, which give the same contrast with far less vibration.

What colors go well with #408677?

For interface work: #F5FAF9 as the surface, #C8E5DE for borders, #4B9B8A for secondary text, #8A3C60 as an accent and #29564D for hover and pressed states. For a palette, the analogous pair #408654 and #407286 stays calm, while #86404F is the loudest partner.

What is #408677 in CMYK for printing?

cmyk(52%, 0%, 11%, 48%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #408677 warm or cool?

Cool — it scores 82 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #40865D; nudged cooler, #3E7D88.

Which Tailwind color is closest to #408677?

The teal family — its 500 step is #14b8a6, ΔE2000 15.9 away. That is a visible difference, so define #408677 as a custom token rather than reaching for the built-in.

How do I use #408677 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#408677] or text-[#408677], 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 #408677 with 50% opacity?

rgba(64, 134, 119, 0.5), or #40867780 in eight-digit hex. Over white that composites to #A0C3BB; over black, #20433C.

Is #408677 a web-safe color?

No. The nearest web-safe colour is #339966, ΔE2000 11.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #408677 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 #408677?

The safest is same-hue elevation: linear-gradient(135deg, #55AE9B, #408677 45%, #29564D). For more colour, a short hue run to #365271 keeps it rich without turning muddy.

Work with #408677 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #408677 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.