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#448bbc

a balanced, vivid blue · cool · closest name: Steel Blue

RGB
68, 139, 188
HSL
205°, 47%, 50%
CMYK
64, 26, 0, 26
Luminance
0.2333

At a glance

Every number on this page in one read: what #448bbc is made of, how bright it looks, and which way it leans.

Hex
#448bbc
Hue
205°
blue
Saturation
47%
vivid
Lightness
50%
balanced
Brightness
74%
HSV value
Perceived
51%
weighted brightness
Luminance
0.2333
WCAG relative
Temperature
Cool
98/100 cool
Color family
Blue
Tone
Vivid
Best ink
Black
5.67:1
Closest name
Steel Blue
ΔE2000 3.5
Where it sits
Hue205° of 360°
Saturation47%
Lightness50%
Temperature
Warm ← → Cool98% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Every format

HEX#448bbc
RGBrgb(68, 139, 188)
HSLhsl(205, 47%, 50%)
CMYKcmyk(64%, 26%, 0%, 26%)
LABlab(55.4 -7.0 -32.2)
LCHlch(55.4 32.9 257.7)
OKLCHoklch(0.612 0.103 241.4)
Decimal4492220
Display P3color(display-p3 0.267 0.545 0.737)

Copy-ready code

/* CSS */
color: #448bbc;
background-color: #448bbc;
/* Tailwind (arbitrary) */
class="text-[#448bbc] bg-[#448bbc]"
/* SCSS */
$brand: #448bbc;
/* SwiftUI */
Color(red: 0.267, green: 0.545, blue: 0.737)
/* Android */
Color.parseColor("#448bbc")
/* Flutter */
Color(0xFF448BBC)
/* Python / OpenCV (BGR) */
(188, 139, 68)

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 #448bbc · 5.67:1
Use #000000AA at every size, AAA for large text only.
Aa
White text · 3.71:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.67:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #448bbc as text scores 3.71:1 on white and 5.67:1 on black.

Accessibility — WCAG contrast

Aa
#448bbc on white: 3.71:1
AA ✗ fail · AA-large · AAA
Aa
#448bbc on black: 5.67:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #758BBE
deuteranopia · #657FBB
tritanopia · #00979C

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #448bbc 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.

#F5F8FA
#EAF1F5
#D0E0EC
#ACCCE1
#83B2D3
#5A99C4
#448bbc
#366F96
#2B5978
#234258
#162937
Base = 600Lightest = 50 · #F5F8FADarkest = 950 · #162937
:root {
  --brand-50: #F5F8FA;
  --brand-100: #EAF1F5;
  --brand-200: #D0E0EC;
  --brand-300: #ACCCE1;
  --brand-400: #83B2D3;
  --brand-500: #5A99C4;
  --brand-600: #448bbc;
  --brand-700: #366F96;
  --brand-800: #2B5978;
  --brand-900: #234258;
  --brand-950: #162937;
  --brand: #448bbc;
  --brand-ink: #000000;
}

Colors that work with #448bbc

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#F4F8FA
Tinted page background
Border#C3DAE9
Hairlines and dividers
Muted text#4B7A9B
Captions on the surface
Accent#C1543F
Second voice, not a rival
Dark variant#22455E
Hover, pressed, headers
Light variant#ECF3F8
Selected rows, tints
Dark surface#141E24
Dark-mode background
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

How to use #448bbc

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
  • Brand accents, badges and data highlights
Use with care
  • Small text on white — under 4.5:1
  • Full-page backgrounds — tiring over long sessions
  • Pairing with a same-lightness hue — edges vibrate

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#BC7544
Analogous left#44BCB1
Analogous right#444FBC
Split-complement 1#BC444F
Split-complement 2#BCB144
Triadic 1#BC448B
Triadic 2#8BBC44
Tetradic#B144BC

RGB percentages

Red26.7%
Green54.5%
Blue73.7%

CMYK percentages

Cyan63.8%
Magenta26.1%
Yellow0.0%
Key (black)26.3%

Color previews

#448bbc text on a black background

contrast 5.67:1

Card sample

#448bbc text on a white background

contrast 3.71:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #448bbc;
Background color
Panel with #448bbc background
background-color: #448bbc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #448bbc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(68, 139, 188, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(68, 139, 188, 0.45);
Border & gradient
Gradient panel
border: 3px solid #448bbc;
background: linear-gradient(135deg, #448bbc, #4D44BC);

Monochromatic scale

Palettes built from #448bbc

Shades — darker

Tints — lighter

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.

#448bbc 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

Converts to four-color process without much drama. Proof it anyway.

#448bbc, answered

What color is #448bbc?

#448bbc is a balanced vivid blue, closest to Steel Blue (ΔE2000 3.5). It sits at 205° on the hue wheel with 47% saturation and 50% lightness, which reads as cool.

What is the RGB value of #448bbc?

rgb(68, 139, 188) — 68 red, 139 green and 188 blue out of 255, or 26.7% / 54.5% / 73.7% by channel.

Is #448bbc a light or a dark color?

It is a mid-tone. Relative luminance is 0.2333 and perceived brightness is 51%, so black text on it reaches 5.67:1.

Should I use black or white text on #448bbc?

Black. It scores 5.67:1 against #448bbc, versus 3.71:1 for white — AA at any size.

What is the complementary color of #448bbc?

#BC7544 sits directly opposite on the wheel. Softer options are the split-complements #BC444F and #BCB144, which give the same contrast with far less vibration.

What colors go well with #448bbc?

For interface work: #F4F8FA as the surface, #C3DAE9 for borders, #4B7A9B for secondary text, #C1543F as an accent and #22455E for hover and pressed states. For a palette, the analogous pair #44BCB1 and #444FBC stays calm, while #BC7544 is the loudest partner.

What is #448bbc in CMYK for printing?

cmyk(64%, 26%, 0%, 26%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #448bbc warm or cool?

Cool — it scores 98 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #44B7BC; nudged cooler, #3B75AC.

Work with #448bbc in the Color Lab