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blue · cool

#0677df

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

Token name suggestion: Slate Sapphire

RGB
6, 119, 223
HSL
209°, 95%, 45%
CMYK
97, 47, 0, 13
Luminance
0.1856

#0677df is a dark electric blue, 209° on the wheel and 99/100 on the cool side. Put black text on it (4.71:1). As text it scores 4.46:1 on white — large text only. Nearest name is Steel Blue, nearest Tailwind family is blue.

hsl(209 95% 45%)rgb(6 119 223)Base step 600AA inkCool

At a glance

Every number on this page in one read: what #0677df is made of, how bright it looks, and which way it leans.

Hex
#0677df
Hue
209°
blue
Saturation
95%
electric
Lightness
45%
dark
Brightness
87%
HSV value
Perceived
46%
weighted brightness
Luminance
0.1856
WCAG relative
Temperature
Cool
99/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
4.71:1
Closest name
Steel Blue
ΔE2000 5.7
Chroma
61.6
LCH, 0–130ish
OKLCH L
0.574
perceptual lightness
Tailwind
blue
500 · ΔE 5.8
Web-safe
#0066CC
nearest of 216
Where it sits
Hue209° of 360°
Saturation95%
Lightness45%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #0677df.

Temperature
Warm ← → Cool99% 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%
Green71%
Blue29%

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

Every format

HEX#0677df
HEX (8-digit)#0677dfff
RGBrgb(6, 119, 223)
RGBArgba(6, 119, 223, 1)
HSLhsl(209, 95%, 45%)
HSV / HSBhsv(209, 97%, 87%)
HWBhwb(209 2% 13%)
CMYKcmyk(97%, 47%, 0%, 13%)
LABlab(50.2 12.1 -60.4)
LCHlch(50.2 61.6 281.4)
OKLCHoklch(0.574 0.181 254.1)
XYZ (D65)xyz(19.99, 18.56, 72.33)
Decimal423903
Display P3color(display-p3 0.024 0.467 0.875)
Web-safe#0066CC

Copy-ready code

every platformclick to select
/* CSS */
color: #0677df;
background-color: #0677df;
/* CSS custom property */
--brand: #0677df;
/* Tailwind (arbitrary) */
class="text-[#0677df] bg-[#0677df]"
/* SCSS */
$brand: #0677df;
/* SwiftUI */
Color(red: 0.024, green: 0.467, blue: 0.875)
/* UIKit */
UIColor(red: 0.024, green: 0.467, blue: 0.875, alpha: 1)
/* Android XML */
<color name="brand">#0677DF</color>
/* Android Compose */
Color(0xFF0677DF)
/* Flutter */
Color(0xFF0677DF)
/* Python / OpenCV (BGR) */
(223, 119, 6)
/* Python / PIL (RGB) */
(6, 119, 223)
/* Java AWT */
new Color(6, 119, 223)
/* .NET */
Color.FromArgb(255, 6, 119, 223)
/* OpenGL / Unity (0–1) */
(0.0235f, 0.4667f, 0.8745f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{6,119,223}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #0677df 85%, white);
border-color: color-mix(in oklab, #0677df 40%, transparent);
/* theme-aware in one line */
color: light-dark(#03427C, #D3E1EE);
/* relative colour syntax */
--hover: hsl(from #0677df 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: #F1F8FD;
  --brand-100: #E4F0FB;
  --brand-200: #C2DFFA;
  --brand-300: #92C9FC;
  --brand-400: #5BAEFB;
  --brand-500: #2493F9;
  --brand-600: #0677df;
  --brand-700: #056AC7;
  --brand-800: #04559F;
  --brand-900: #083F73;
  --brand-950: #052848;
  --brand: #0677df;
  --brand-ink: #000000;
  --brand-surface: #F4F7FA;
  --brand-border: #C0D7ED;
  --brand-hover: #0564BC;
  --brand-pressed: #045299;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141C24;
    --brand-ink: #D3E1EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1F8FD',
        100: '#E4F0FB',
        200: '#C2DFFA',
        300: '#92C9FC',
        400: '#5BAEFB',
        500: '#2493F9',
        600: '#0677df',
        700: '#056AC7',
        800: '#04559F',
        900: '#083F73',
        950: '#052848',
        DEFAULT: '#0677df',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1F8FD,
  '100': #E4F0FB,
  '200': #C2DFFA,
  '300': #92C9FC,
  '400': #5BAEFB,
  '500': #2493F9,
  '600': #0677df,
  '700': #056AC7,
  '800': #04559F,
  '900': #083F73,
  '950': #052848,
);
$brand-base: #0677df;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1F8FD", "$type": "color" },
      "100": { "$value": "#E4F0FB", "$type": "color" },
      "200": { "$value": "#C2DFFA", "$type": "color" },
      "300": { "$value": "#92C9FC", "$type": "color" },
      "400": { "$value": "#5BAEFB", "$type": "color" },
      "500": { "$value": "#2493F9", "$type": "color" },
      "600": { "$value": "#0677df", "$type": "color" },
      "700": { "$value": "#056AC7", "$type": "color" },
      "800": { "$value": "#04559F", "$type": "color" },
      "900": { "$value": "#083F73", "$type": "color" },
      "950": { "$value": "#052848", "$type": "color" }
    },
    "brandInk": { "$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 #0677df · 4.71:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.46:1
AA fail · AA large pass · AAA fail
Aa
Black text · 4.71:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #0677df as text scores 4.46:1 on white and 4.71:1 on black.
Best tinted ink on it, if plain black or white feels flat: #03427C at 2.27:1.

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
#0674DA · 4.65:1
AA on white−1% L
#0674DA
The quick fox
#0457A3 · 7.25:1
AAA on white−12% L
#0457A3
The quick fox
#0677df · 4.71:1
AA on blackalready passes
#0677df
The quick fox
#339AFA · 7.14:1
AAA on black+14% L
#339AFA

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #0677DF 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
#0677df on white: 4.46:1
AA ✗ fail · AA-large · AAA
Aa
#0677df on black: 4.71:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #0677df as text on that neutral, and that neutral as text on #0677df.

NeutralRatioBoth directions
White4.46:1AaAa
Slate 504.26:1AaAa
Slate 1004.07:1AaAa
Slate 2003.62:1AaAa
Slate 3003.00:1AaAa
Slate 4001.74:1AaAa
Slate 5001.07:1AaAa
Slate 6001.70:1AaAa
Slate 7002.32:1AaAa
Slate 8003.28:1AaAa
Slate 9004.01:1AaAa
Black4.71:1AaAa
Colour vision deficiency
true color
protanopia · #3B81E3
deuteranopia · #006FDD
tritanopia · #0090A0

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. #0677df is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F1F8FD
#E4F0FB
#C2DFFA
#92C9FC
#5BAEFB
#2493F9
#0677df
#056AC7
#04559F
#083F73
#052848
Base = 600Lightest = 50 · #F1F8FDDarkest = 950 · #052848Text 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 0.045 254.1);
  --brand-100: oklch(0.94 0.072 254.1);
  --brand-200: oklch(0.88 0.109 254.1);
  --brand-300: oklch(0.80 0.141 254.1);
  --brand-400: oklch(0.72 0.166 254.1);
  --brand-500: oklch(0.64 0.181 254.1);
  --brand-600: oklch(0.56 0.181 254.1);
  --brand-700: oklch(0.48 0.170 254.1);
  --brand-800: oklch(0.40 0.152 254.1);
  --brand-900: oklch(0.32 0.127 254.1);
  --brand-950: oklch(0.24 0.099 254.1);
}

Colors that work with #0677df

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#F4F7FA
Tinted page background
Border#C0D7ED
Hairlines and dividers
Muted text#4B749B
Captions on the surface
Accent#E43501
Second voice, not a rival
Dark variant#03427C
Hover, pressed, headers
Light variant#E6F3FE
Selected rows, tints
Dark surface#141C24
Dark-mode background
Hover#0564BC
One step down in lightness
Pressed#045299
Two steps down
Disabled#98ABBD
Chroma pulled out
Focus ring#0082F9
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 #0677df

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
  • 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
  • Small text on white — under 4.5:1
  • 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
24px / 18.66px bold
Safe as a fill behind white type
No — use #03427C
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
  • Weight55/100
  • 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#DF6E06
Analogous left#06DFDB
Analogous right#060ADF
Split-complement 1#DF060A
Split-complement 2#DFDB06
Triadic 1#DF0677
Triadic 2#77DF06
Tetradic#DB06DF
On the wheel
Base+30°−30°+120°+240°+180°209°

#0677df sits at 209°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red2.4%
Green46.7%
Blue87.5%
R · 0–255
6
0x06
G · 0–255
119
0x77
B · 0–255
223
0xdf

CMYK percentages

Cyan97.3%
Magenta46.6%
Yellow0.0%
Key (black)12.5%

Total ink coverage is 156%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#0677df text on a black background

contrast 4.71:1

Card sample

#0677df text on a white background

contrast 4.46:1

Card sample

#0677df on grey

4.07:1

#0677df on its own surface

4.15:1

#0677df on its dark surface

3.86:1

CSS3 live lab

Text font color

The quick brown fox

color: #0677df;
Background color
Panel with #0677df background
background-color: #0677df;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #0677df;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(6, 119, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(6, 119, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0677df;
background: linear-gradient(135deg, #0677df, #2606DF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #0677df, #5C06DF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #0677df;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #0677df;
caret-color: #0677df;
Left rule
Pull quote or callout
border-left: 4px solid #0677df;
Ring + tint
Selected chip
background: #E6F3FE;
box-shadow: inset 0 0 0 2px #0677df;
Conic badge
68%
background: conic-gradient(#0677df 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #0677df 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(6, 119, 223, 0.5)
rgb(6 119 223 / 50%)
#0677df80
hsl(209 95% 45% / 50%)
color-mix(in srgb, #0677df 50%, transparent)
Alpha8-digit hexFlat on white
10%#0677df1a#E6F1FC
20%#0677df33#CDE4F9
40%#0677df66#9BC9F2
60%#0677df99#6AADEC
80%#0677dfcc#3892E5

Gradients from #0677df

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, #2995F9, #0677df 45%, #03427C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #0677df, #3005C1);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #0677df, #DF6E06);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #47A4FA 0%, #0677df 45%, #03427C 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F7FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #1FF9E2 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #1A0BF8 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #03427C 0%, transparent 65%), #0677df;

Monochromatic scale

Palettes built from #0677df

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.

#0677df 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 4.71:1.

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.

#0677df, answered

What color is #0677df?

#0677df is a dark electric blue, closest to Steel Blue (ΔE2000 5.7). It sits at 209° on the hue wheel with 95% saturation and 45% lightness, which reads as cool.

What is the RGB value of #0677df?

rgb(6, 119, 223) — 6 red, 119 green and 223 blue out of 255, or 2.4% / 46.7% / 87.5% by channel.

What is #0677df in HSL and HSV?

hsl(209, 95%, 45%) and hsv(209, 97%, 87%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #0677df a light or a dark color?

It is a mid-tone. Relative luminance is 0.1856 and perceived brightness is 46%, so black text on it reaches 4.71:1.

Should I use black or white text on #0677df?

Black. It scores 4.71:1 against #0677df, versus 4.46:1 for white — AA at any size.

Is #0677df accessible on a white background?

#0677df on white scores 4.46:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #0674DA to reach 4.5:1, or #0457A3 for 7:1.

What is the complementary color of #0677df?

#DF6E06 sits directly opposite on the wheel. Softer options are the split-complements #DF060A and #DFDB06, which give the same contrast with far less vibration.

What colors go well with #0677df?

For interface work: #F4F7FA as the surface, #C0D7ED for borders, #4B749B for secondary text, #E43501 as an accent and #03427C for hover and pressed states. For a palette, the analogous pair #06DFDB and #060ADF stays calm, while #DF6E06 is the loudest partner.

What is #0677df in CMYK for printing?

cmyk(97%, 47%, 0%, 13%). 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 #0677df warm or cool?

Cool — it scores 99 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #0627DF; nudged cooler, #0365C8.

Which Tailwind color is closest to #0677df?

The blue family — its 500 step is #3b82f6, ΔE2000 5.8 away. That is a visible difference, so define #0677df as a custom token rather than reaching for the built-in.

How do I use #0677df in Tailwind CSS?

Inline it as an arbitrary value with bg-[#0677df] or text-[#0677df], 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 #0677df with 50% opacity?

rgba(6, 119, 223, 0.5), or #0677df80 in eight-digit hex. Over white that composites to #83BBEF; over black, #033C70.

Is #0677df a web-safe color?

No. The nearest web-safe colour is #0066CC, ΔE2000 6.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #0677df 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 #0677df?

The safest is same-hue elevation: linear-gradient(135deg, #2995F9, #0677df 45%, #03427C). For more colour, a short hue run to #3005C1 keeps it rich without turning muddy.

Work with #0677df in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #0677df at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.