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blue · cool

#0c7abc

a dark, electric blue · cool · closest name: Steel Blue

Token name suggestion: Dusk Denim

RGB
12, 122, 188
HSL
203°, 88%, 39%
CMYK
94, 35, 0, 26
Luminance
0.1763

#0c7abc is a dark electric blue, 203° on the wheel and 97/100 on the cool side. Put white text on it (4.64:1). As text it scores 4.64:1 on white — safe at any size. Nearest name is Steel Blue, nearest Tailwind family is blue.

hsl(203 88% 39%)rgb(12 122 188)Base step 700AA inkCool

At a glance

Every number on this page in one read: what #0c7abc is made of, how bright it looks, and which way it leans.

Hex
#0c7abc
Hue
203°
blue
Saturation
88%
electric
Lightness
39%
dark
Brightness
74%
HSV value
Perceived
44%
weighted brightness
Luminance
0.1763
WCAG relative
Temperature
Cool
97/100 cool
Color family
Blue
Tone
Electric
Best ink
White
4.64:1
Closest name
Steel Blue
ΔE2000 4.5
Chroma
42.4
LCH, 0–130ish
OKLCH L
0.558
perceptual lightness
Tailwind
blue
500 · ΔE 9.7
Web-safe
#0066CC
nearest of 216
Where it sits
Hue203° of 360°
Saturation88%
Lightness39%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #0c7abc.

Temperature
Warm ← → Cool97% 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
Red0%
Green79%
Blue21%

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

Every format

HEX#0c7abc
HEX (8-digit)#0c7abcff
RGBrgb(12, 122, 188)
RGBArgba(12, 122, 188, 1)
HSLhsl(203, 88%, 39%)
HSV / HSBhsv(203, 94%, 74%)
HWBhwb(203 5% 26%)
CMYKcmyk(94%, 35%, 0%, 26%)
LABlab(49.0 -3.2 -42.3)
LCHlch(49.0 42.4 265.7)
OKLCHoklch(0.558 0.134 244.0)
XYZ (D65)xyz(16.18, 17.63, 50.12)
Decimal817852
Display P3color(display-p3 0.047 0.478 0.737)
Web-safe#0066CC

Copy-ready code

every platformclick to select
/* CSS */
color: #0c7abc;
background-color: #0c7abc;
/* CSS custom property */
--brand: #0c7abc;
/* Tailwind (arbitrary) */
class="text-[#0c7abc] bg-[#0c7abc]"
/* SCSS */
$brand: #0c7abc;
/* SwiftUI */
Color(red: 0.047, green: 0.478, blue: 0.737)
/* UIKit */
UIColor(red: 0.047, green: 0.478, blue: 0.737, alpha: 1)
/* Android XML */
<color name="brand">#0C7ABC</color>
/* Android Compose */
Color(0xFF0C7ABC)
/* Flutter */
Color(0xFF0C7ABC)
/* Python / OpenCV (BGR) */
(188, 122, 12)
/* Python / PIL (RGB) */
(12, 122, 188)
/* Java AWT */
new Color(12, 122, 188)
/* .NET */
Color.FromArgb(255, 12, 122, 188)
/* OpenGL / Unity (0–1) */
(0.0471f, 0.4784f, 0.7373f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{12,122,188}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #0c7abc 85%, white);
border-color: color-mix(in oklab, #0c7abc 40%, transparent);
/* theme-aware in one line */
color: light-dark(#084E78, #D3E4EE);
/* relative colour syntax */
--hover: hsl(from #0c7abc 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: #F2F9FD;
  --brand-100: #E5F2FA;
  --brand-200: #C4E4F8;
  --brand-300: #96D3F8;
  --brand-400: #61BDF5;
  --brand-500: #2CA7F2;
  --brand-600: #0F95E6;
  --brand-700: #0c7abc;
  --brand-800: #0A6499;
  --brand-900: #0C4A6F;
  --brand-950: #072E45;
  --brand: #0c7abc;
  --brand-ink: #ffffff;
  --brand-surface: #F4F8FA;
  --brand-border: #C0DCED;
  --brand-hover: #0A649A;
  --brand-pressed: #084E79;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141E24;
    --brand-ink: #D3E4EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2F9FD',
        100: '#E5F2FA',
        200: '#C4E4F8',
        300: '#96D3F8',
        400: '#61BDF5',
        500: '#2CA7F2',
        600: '#0F95E6',
        700: '#0c7abc',
        800: '#0A6499',
        900: '#0C4A6F',
        950: '#072E45',
        DEFAULT: '#0c7abc',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2F9FD,
  '100': #E5F2FA,
  '200': #C4E4F8,
  '300': #96D3F8,
  '400': #61BDF5,
  '500': #2CA7F2,
  '600': #0F95E6,
  '700': #0c7abc,
  '800': #0A6499,
  '900': #0C4A6F,
  '950': #072E45,
);
$brand-base: #0c7abc;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2F9FD", "$type": "color" },
      "100": { "$value": "#E5F2FA", "$type": "color" },
      "200": { "$value": "#C4E4F8", "$type": "color" },
      "300": { "$value": "#96D3F8", "$type": "color" },
      "400": { "$value": "#61BDF5", "$type": "color" },
      "500": { "$value": "#2CA7F2", "$type": "color" },
      "600": { "$value": "#0F95E6", "$type": "color" },
      "700": { "$value": "#0c7abc", "$type": "color" },
      "800": { "$value": "#0A6499", "$type": "color" },
      "900": { "$value": "#0C4A6F", "$type": "color" },
      "950": { "$value": "#072E45", "$type": "color" }
    },
    "brandInk": { "$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 #0c7abc · 4.64:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.64:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 4.53:1
AA pass · AA large pass · AAA fail
Reading the other direction: #0c7abc as text scores 4.64:1 on white and 4.53:1 on black.
Best tinted ink on it, if plain black or white feels flat: #E7F5FD at 4.17:1.

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
#0c7abc · 4.64:1
AA on whitealready passes
#0c7abc
The quick fox
#095B8C · 7.27:1
AAA on white−10% L
#095B8C
The quick fox
#0c7abc · 4.53:1
AA on blackalready passes
#0c7abc
The quick fox
#109CF0 · 7.04:1
AAA on black+11% L
#109CF0

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #0C7ABC 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
#0c7abc on white: 4.64:1
AA ✓ pass · AA-large · AAA
Aa
#0c7abc on black: 4.53:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #0c7abc as text on that neutral, and that neutral as text on #0c7abc.

NeutralRatioBoth directions
White4.64:1AaAa
Slate 504.44:1AaAa
Slate 1004.24:1AaAa
Slate 2003.76:1AaAa
Slate 3003.13:1AaAa
Slate 4001.81:1AaAa
Slate 5001.03:1AaAa
Slate 6001.63:1AaAa
Slate 7002.23:1AaAa
Slate 8003.15:1AaAa
Slate 9003.85:1AaAa
Black4.53:1AaAa
Colour vision deficiency
true color
protanopia · #5A7DBF
deuteranopia · #426EBB
tritanopia · #008A92

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. #0c7abc 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.

#F2F9FD
#E5F2FA
#C4E4F8
#96D3F8
#61BDF5
#2CA7F2
#0F95E6
#0c7abc
#0A6499
#0C4A6F
#072E45
Base = 700Lightest = 50 · #F2F9FDDarkest = 950 · #072E45Text step on white = 700
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 0.034 244.0);
  --brand-100: oklch(0.94 0.054 244.0);
  --brand-200: oklch(0.88 0.081 244.0);
  --brand-300: oklch(0.80 0.105 244.0);
  --brand-400: oklch(0.72 0.123 244.0);
  --brand-500: oklch(0.64 0.134 244.0);
  --brand-600: oklch(0.56 0.134 244.0);
  --brand-700: oklch(0.48 0.126 244.0);
  --brand-800: oklch(0.40 0.113 244.0);
  --brand-900: oklch(0.32 0.094 244.0);
  --brand-950: oklch(0.24 0.074 244.0);
}

Colors that work with #0c7abc

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#F4F8FA
Tinted page background
Border#C0DCED
Hairlines and dividers
Muted text#4B7D9B
Captions on the surface
Accent#C01F08
Second voice, not a rival
Dark variant#084E78
Hover, pressed, headers
Light variant#E7F5FD
Selected rows, tints
Dark surface#141E24
Dark-mode background
Hover#0A649A
One step down in lightness
Pressed#084E79
Two steps down
Disabled#86A2B2
Chroma pulled out
Focus ring#0289DA
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 #0c7abc

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

Works well for
  • Body text and links on white
  • Text and icons on dark surfaces
  • 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
  • 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.

trustedcalmcompetentcorporate

The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed.

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

It is also the most crowded hue on the web. Distinctiveness has to come from your other choices.

Reads as
  • FormalityHigh
  • EnergyHigh
  • 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#BC4E0C
Analogous left#0CBCA6
Analogous right#0C22BC
Split-complement 1#BC0C22
Split-complement 2#BCA60C
Triadic 1#BC0C7A
Triadic 2#7ABC0C
Tetradic#A60CBC
On the wheel
Base+30°−30°+120°+240°+180°203°

#0c7abc sits at 203°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red4.7%
Green47.8%
Blue73.7%
R · 0–255
12
0x0c
G · 0–255
122
0x7a
B · 0–255
188
0xbc

CMYK percentages

Cyan93.6%
Magenta35.1%
Yellow0.0%
Key (black)26.3%

Total ink coverage is 155%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#0c7abc text on a black background

contrast 4.53:1

Card sample

#0c7abc text on a white background

contrast 4.64:1

Card sample

#0c7abc on grey

4.24:1

#0c7abc on its own surface

4.34:1

#0c7abc on its dark surface

3.65:1

CSS3 live lab

Text font color

The quick brown fox

color: #0c7abc;
Background color
Panel with #0c7abc background
background-color: #0c7abc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #0c7abc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(12, 122, 188, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(12, 122, 188, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0c7abc;
background: linear-gradient(135deg, #0c7abc, #130CBC);
Gradient text

Gradient headline

background: linear-gradient(90deg, #0c7abc, #3F0CBC);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #0c7abc;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #0c7abc;
caret-color: #0c7abc;
Left rule
Pull quote or callout
border-left: 4px solid #0c7abc;
Ring + tint
Selected chip
background: #E7F5FD;
box-shadow: inset 0 0 0 2px #0c7abc;
Conic badge
68%
background: conic-gradient(#0c7abc 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #0c7abc 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(12, 122, 188, 0.5)
rgb(12 122 188 / 50%)
#0c7abc80
hsl(203 88% 39% / 50%)
color-mix(in srgb, #0c7abc 50%, transparent)
Alpha8-digit hexFlat on white
10%#0c7abc1a#E7F2F8
20%#0c7abc33#CEE4F2
40%#0c7abc66#9ECAE4
60%#0c7abc99#6DAFD7
80%#0c7abccc#3D95C9

Gradients from #0c7abc

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, #159EF0, #0c7abc 45%, #084E78);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #0c7abc, #1D0A9F);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #0c7abc, #BC4E0C);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #32AAF2 0%, #0c7abc 45%, #084E78 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F8FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #0FECBE 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #0E16D9 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #084E78 0%, transparent 65%), #0c7abc;

Monochromatic scale

Palettes built from #0c7abc

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.

#0c7abc in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
TechnologyFinanceHealthcareEnterprise SaaS
Common UI roles
ButtonsLinksFocus statesCharts
Print note

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

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 4.53:1.

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.

#0c7abc, answered

What color is #0c7abc?

#0c7abc is a dark electric blue, closest to Steel Blue (ΔE2000 4.5). It sits at 203° on the hue wheel with 88% saturation and 39% lightness, which reads as cool.

What is the RGB value of #0c7abc?

rgb(12, 122, 188) — 12 red, 122 green and 188 blue out of 255, or 4.7% / 47.8% / 73.7% by channel.

What is #0c7abc in HSL and HSV?

hsl(203, 88%, 39%) and hsv(203, 94%, 74%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #0c7abc a light or a dark color?

It is a dark color. Relative luminance is 0.1763 and perceived brightness is 44%, so white text on it reaches 4.64:1.

Should I use black or white text on #0c7abc?

White. It scores 4.64:1 against #0c7abc, versus 4.53:1 for black — AA at any size.

Is #0c7abc accessible on a white background?

#0c7abc on white scores 4.64:1, which clears AA at every size but not AAA.

What is the complementary color of #0c7abc?

#BC4E0C sits directly opposite on the wheel. Softer options are the split-complements #BC0C22 and #BCA60C, which give the same contrast with far less vibration.

What colors go well with #0c7abc?

For interface work: #F4F8FA as the surface, #C0DCED for borders, #4B7D9B for secondary text, #C01F08 as an accent and #084E78 for hover and pressed states. For a palette, the analogous pair #0CBCA6 and #0C22BC stays calm, while #BC4E0C is the loudest partner.

What is #0c7abc in CMYK for printing?

cmyk(94%, 35%, 0%, 26%). 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 #0c7abc warm or cool?

Cool — it scores 97 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #0CBABC; nudged cooler, #095EA6.

Which Tailwind color is closest to #0c7abc?

The blue family — its 500 step is #3b82f6, ΔE2000 9.7 away. That is a visible difference, so define #0c7abc as a custom token rather than reaching for the built-in.

How do I use #0c7abc in Tailwind CSS?

Inline it as an arbitrary value with bg-[#0c7abc] or text-[#0c7abc], 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 #0c7abc with 50% opacity?

rgba(12, 122, 188, 0.5), or #0c7abc80 in eight-digit hex. Over white that composites to #86BDDE; over black, #063D5E.

Is #0c7abc a web-safe color?

No. The nearest web-safe colour is #0066CC, ΔE2000 8.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #0c7abc mean?

As a blue, it reads trusted, calm, competent. The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #0c7abc?

The safest is same-hue elevation: linear-gradient(135deg, #159EF0, #0c7abc 45%, #084E78). For more colour, a short hue run to #1D0A9F keeps it rich without turning muddy.

Work with #0c7abc in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #0c7abc at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.