Skip to content
cyan · cool

#08445c

a deep, electric cyan · cool · closest name: Dark Slate Gray

Token name suggestion: Midnight Lagoon

RGB
8, 68, 92
HSL
197°, 84%, 20%
CMYK
91, 26, 0, 64
Luminance
0.0496

#08445c is a deep electric cyan, 197° on the wheel and 95/100 on the cool side. Put white text on it (10.54:1). As text it scores 10.54:1 on white — safe at any size. Nearest name is Dark Slate Gray, nearest Tailwind family is slate.

hsl(197 84% 20%)rgb(8 68 92)Base step 900AAA inkCool

At a glance

Every number on this page in one read: what #08445c is made of, how bright it looks, and which way it leans.

Hex
#08445c
Hue
197°
cyan
Saturation
84%
electric
Lightness
20%
deep
Brightness
36%
HSV value
Perceived
24%
weighted brightness
Luminance
0.0496
WCAG relative
Temperature
Cool
95/100 cool
Color family
Cyan
Tone
Electric
Best ink
White
10.54:1
Closest name
Dark Slate Gray
ΔE2000 11.9
Chroma
21.0
LCH, 0–130ish
OKLCH L
0.364
perceptual lightness
Tailwind
slate
500 · ΔE 20.3
Web-safe
#003366
nearest of 216
Where it sits
Hue197° of 360°
Saturation84%
Lightness20%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #08445c.

Temperature
Warm ← → Cool95% 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
Red1%
Green83%
Blue16%

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

Every format

HEX#08445c
HEX (8-digit)#08445cff
RGBrgb(8, 68, 92)
RGBArgba(8, 68, 92, 1)
HSLhsl(197, 84%, 20%)
HSV / HSBhsv(197, 91%, 36%)
HWBhwb(197 3% 64%)
CMYKcmyk(91%, 26%, 0%, 64%)
LABlab(26.6 -8.3 -19.3)
LCHlch(26.6 21.0 246.6)
OKLCHoklch(0.364 0.070 231.5)
XYZ (D65)xyz(4.10, 4.96, 10.86)
Decimal541788
Display P3color(display-p3 0.031 0.267 0.361)
Web-safe#003366

Copy-ready code

every platformclick to select
/* CSS */
color: #08445c;
background-color: #08445c;
/* CSS custom property */
--brand: #08445c;
/* Tailwind (arbitrary) */
class="text-[#08445c] bg-[#08445c]"
/* SCSS */
$brand: #08445c;
/* SwiftUI */
Color(red: 0.031, green: 0.267, blue: 0.361)
/* UIKit */
UIColor(red: 0.031, green: 0.267, blue: 0.361, alpha: 1)
/* Android XML */
<color name="brand">#08445C</color>
/* Android Compose */
Color(0xFF08445C)
/* Flutter */
Color(0xFF08445C)
/* Python / OpenCV (BGR) */
(92, 68, 8)
/* Python / PIL (RGB) */
(8, 68, 92)
/* Java AWT */
new Color(8, 68, 92)
/* .NET */
Color.FromArgb(255, 8, 68, 92)
/* OpenGL / Unity (0–1) */
(0.0314f, 0.2667f, 0.3608f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{8,68,92}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #08445c 85%, white);
border-color: color-mix(in oklab, #08445c 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0A5775, #D3E6EE);
/* relative colour syntax */
--hover: hsl(from #08445c 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: #F2FAFC;
  --brand-100: #E6F4FA;
  --brand-200: #C5E8F6;
  --brand-300: #98DBF6;
  --brand-400: #64C9F2;
  --brand-500: #31B7ED;
  --brand-600: #14A7E1;
  --brand-700: #108BBC;
  --brand-800: #0D6F96;
  --brand-900: #08445c;
  --brand-950: #093344;
  --brand: #08445c;
  --brand-ink: #ffffff;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E0ED;
  --brand-hover: #052C3B;
  --brand-pressed: #02131A;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142024;
    --brand-ink: #D3E6EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FAFC',
        100: '#E6F4FA',
        200: '#C5E8F6',
        300: '#98DBF6',
        400: '#64C9F2',
        500: '#31B7ED',
        600: '#14A7E1',
        700: '#108BBC',
        800: '#0D6F96',
        900: '#08445c',
        950: '#093344',
        DEFAULT: '#08445c',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FAFC,
  '100': #E6F4FA,
  '200': #C5E8F6,
  '300': #98DBF6,
  '400': #64C9F2,
  '500': #31B7ED,
  '600': #14A7E1,
  '700': #108BBC,
  '800': #0D6F96,
  '900': #08445c,
  '950': #093344,
);
$brand-base: #08445c;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FAFC", "$type": "color" },
      "100": { "$value": "#E6F4FA", "$type": "color" },
      "200": { "$value": "#C5E8F6", "$type": "color" },
      "300": { "$value": "#98DBF6", "$type": "color" },
      "400": { "$value": "#64C9F2", "$type": "color" },
      "500": { "$value": "#31B7ED", "$type": "color" },
      "600": { "$value": "#14A7E1", "$type": "color" },
      "700": { "$value": "#108BBC", "$type": "color" },
      "800": { "$value": "#0D6F96", "$type": "color" },
      "900": { "$value": "#08445c", "$type": "color" },
      "950": { "$value": "#093344", "$type": "color" }
    },
    "brandInk": { "$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 #08445c · 10.54:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 10.54:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.99:1
AA fail · AA large fail · AAA fail
Reading the other direction: #08445c as text scores 10.54:1 on white and 1.99:1 on black.
Best tinted ink on it, if plain black or white feels flat: #E8F7FD at 9.62:1.

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
#08445c · 10.54:1
AA on whitealready passes
#08445c
The quick fox
#08445c · 10.54:1
AAA on whitealready passes
#08445c
The quick fox
#0F7FAC · 4.65:1
AA on black+17% L
#0F7FAC
The quick fox
#13A2DB · 7.22:1
AAA on black+27% L
#13A2DB

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #08445C 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
#08445c on white: 10.54:1
AA ✓ pass · AA-large · AAA
Aa
#08445c on black: 1.99:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #08445c as text on that neutral, and that neutral as text on #08445c.

NeutralRatioBoth directions
White10.54:1AaAa
Slate 5010.08:1AaAa
Slate 1009.62:1AaAa
Slate 2008.55:1AaAa
Slate 3007.10:1AaAa
Slate 4004.11:1AaAa
Slate 5002.22:1AaAa
Slate 6001.39:1AaAa
Slate 7001.02:1AaAa
Slate 8001.39:1AaAa
Slate 9001.69:1AaAa
Black1.99:1AaAa
Colour vision deficiency
true color
protanopia · #38435D
deuteranopia · #2D3C5C
tritanopia · #004A4C

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. #08445c is pinned to step 900; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F2FAFC
#E6F4FA
#C5E8F6
#98DBF6
#64C9F2
#31B7ED
#14A7E1
#108BBC
#0D6F96
#08445c
#093344
Base = 900Lightest = 50 · #F2FAFCDarkest = 950 · #093344Text 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 0.017 231.5);
  --brand-100: oklch(0.94 0.028 231.5);
  --brand-200: oklch(0.88 0.042 231.5);
  --brand-300: oklch(0.80 0.054 231.5);
  --brand-400: oklch(0.72 0.064 231.5);
  --brand-500: oklch(0.64 0.070 231.5);
  --brand-600: oklch(0.56 0.070 231.5);
  --brand-700: oklch(0.48 0.065 231.5);
  --brand-800: oklch(0.40 0.058 231.5);
  --brand-900: oklch(0.32 0.049 231.5);
  --brand-950: oklch(0.24 0.038 231.5);
}

Colors that work with #08445c

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#F4F9FA
Tinted page background
Border#C0E0ED
Hairlines and dividers
Muted text#4B849B
Captions on the surface
Accent#5E0906
Second voice, not a rival
Dark variant#0A5775
Hover, pressed, headers
Light variant#E8F7FD
Selected rows, tints
Dark surface#142024
Dark-mode background
Hover#052C3B
One step down in lightness
Pressed#02131A
Two steps down
Disabled#537481
Chroma pulled out
Focus ring#045575
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 #08445c

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
  • Text on black or near-black surfaces
  • 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.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. 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
  • EnergyHigh
  • Weight80/100
  • 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#5C2008
Analogous left#085C4A
Analogous right#081A5C
Split-complement 1#5C081A
Split-complement 2#5C4A08
Triadic 1#5C0844
Triadic 2#445C08
Tetradic#4A085C
On the wheel
Base+30°−30°+120°+240°+180°197°

#08445c sits at 197°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red3.1%
Green26.7%
Blue36.1%
R · 0–255
8
0x08
G · 0–255
68
0x44
B · 0–255
92
0x5c

CMYK percentages

Cyan91.3%
Magenta26.1%
Yellow0.0%
Key (black)63.9%

Total ink coverage is 181%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#08445c text on a black background

contrast 1.99:1

Card sample

#08445c text on a white background

contrast 10.54:1

Card sample

#08445c on grey

9.62:1

#08445c on its own surface

9.93:1

#08445c on its dark surface

1.58:1

CSS3 live lab

Text font color

The quick brown fox

color: #08445c;
Background color
Panel with #08445c background
background-color: #08445c;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #08445c;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(8, 68, 92, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(8, 68, 92, 0.45);
Border & gradient
Gradient panel
border: 3px solid #08445c;
background: linear-gradient(135deg, #08445c, #080C5C);
Gradient text

Gradient headline

background: linear-gradient(90deg, #08445c, #19085C);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #08445c;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #08445c;
caret-color: #08445c;
Left rule
Pull quote or callout
border-left: 4px solid #08445c;
Ring + tint
Selected chip
background: #E8F7FD;
box-shadow: inset 0 0 0 2px #08445c;
Conic badge
68%
background: conic-gradient(#08445c 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #08445c 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(8, 68, 92, 0.5)
rgb(8 68 92 / 50%)
#08445c80
hsl(197 84% 20% / 50%)
color-mix(in srgb, #08445c 50%, transparent)
Alpha8-digit hexFlat on white
10%#08445c1a#E6ECEF
20%#08445c33#CEDADE
40%#08445c66#9CB4BE
60%#08445c99#6B8F9D
80%#08445ccc#39697D

Gradients from #08445c

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, #0D6E94, #08445c 45%, #0A5775);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #08445c, #080640);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #08445c, #5C2008);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #0F83B0 0%, #08445c 45%, #0A5775 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F9FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #0C8B65 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #0A1978 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0A5775 0%, transparent 65%), #08445c;

Monochromatic scale

Palettes built from #08445c

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.

#08445c 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

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

On screens

Very dark values collapse into each other on cheap panels — leave more lightness between your darkest steps than the numbers suggest.

In dark mode

Too dim on dark surfaces at 1.99:1 — lift it to #0F7FAC 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.

#08445c, answered

What color is #08445c?

#08445c is a deep electric cyan, closest to Dark Slate Gray (ΔE2000 11.9). It sits at 197° on the hue wheel with 84% saturation and 20% lightness, which reads as cool.

What is the RGB value of #08445c?

rgb(8, 68, 92) — 8 red, 68 green and 92 blue out of 255, or 3.1% / 26.7% / 36.1% by channel.

What is #08445c in HSL and HSV?

hsl(197, 84%, 20%) and hsv(197, 91%, 36%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #08445c a light or a dark color?

It is a dark color. Relative luminance is 0.0496 and perceived brightness is 24%, so white text on it reaches 10.54:1.

Should I use black or white text on #08445c?

White. It scores 10.54:1 against #08445c, versus 1.99:1 for black — AAA at any size.

Is #08445c accessible on a white background?

#08445c on white scores 10.54:1, which clears AAA at every size.

What is the complementary color of #08445c?

#5C2008 sits directly opposite on the wheel. Softer options are the split-complements #5C081A and #5C4A08, which give the same contrast with far less vibration.

What colors go well with #08445c?

For interface work: #F4F9FA as the surface, #C0E0ED for borders, #4B849B for secondary text, #5E0906 as an accent and #0A5775 for hover and pressed states. For a palette, the analogous pair #085C4A and #081A5C stays calm, while #5C2008 is the loudest partner.

What is #08445c in CMYK for printing?

cmyk(91%, 26%, 0%, 64%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #08445c warm or cool?

Cool — it scores 95 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #085C55; nudged cooler, #07365D.

Which Tailwind color is closest to #08445c?

The slate family — its 500 step is #64748b, ΔE2000 20.3 away. That is a visible difference, so define #08445c as a custom token rather than reaching for the built-in.

How do I use #08445c in Tailwind CSS?

Inline it as an arbitrary value with bg-[#08445c] or text-[#08445c], 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 #08445c with 50% opacity?

rgba(8, 68, 92, 0.5), or #08445c80 in eight-digit hex. Over white that composites to #84A2AE; over black, #04222E.

Is #08445c a web-safe color?

No. The nearest web-safe colour is #003366, ΔE2000 10.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #08445c 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 #08445c?

The safest is same-hue elevation: linear-gradient(135deg, #0D6E94, #08445c 45%, #0A5775). For more colour, a short hue run to #080640 keeps it rich without turning muddy.

Work with #08445c in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #08445c at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.