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Indigo Radiant Bright
Color detail

Indigo Radiant Bright

Blue · Hue 230
Metrics
S 84% · L 54%
Contrast (WCAG)
on white6.5:1AAon black3.2:1AA Large
Save to journalSign in to saveStart palette from thisRecent trail

About this color

Indigo Radiant Bright (#2748EC) belongs to the blue family — hue 230°, 84% saturation, 54% lightness. Copy the hex, RGB, or HSL value above, or paste the CSS custom property below into your stylesheet to reference this color directly.

CSS
:root {
  --colorarchive-indigo-radiant-bright: #2748EC;
  --colorarchive-indigo-radiant-bright-hsl: hsl(230, 84%, 54%);
  --colorarchive-indigo-radiant-bright-rgb: rgb(39, 72, 236);
}

AI Color Names

Let AI suggest alternative poetic names for this color in English and Chinese.

Design Context

ProfessionalReliableFocused
Common in

Banking · Insurance · Enterprise Software

Pairs well with

White for clean authority, light orange for warm contrast, dark navy for depth

Design tip

The backbone of business interfaces. Use for primary actions and navigation. Blue links are the web's universal convention.

Cultural context ▶

Blue is the world's most popular color. It represents trust, competence, and stability across virtually all cultures.

Color Origins

Blue family

The most-loved color on the planet, and the most overused.

Heritage

Blue is one of the hardest colors for nature to make with pigment — and, historically, one of the most expensive to paint with. Ultramarine, ground from lapis lazuli mined in Afghanistan, could cost as much as gold in Renaissance Europe; Vermeer used it lavishly. Egyptian blue (the first synthetic pigment, ~3000 BCE) was lost for centuries and rediscovered in the 19th. Prussian blue (1704) quickly gave painters a cheap alternative to ultramarine; Yves Klein's IKB (1960) re-aristocratized blue.

Across cultures

In ancient Egypt blue was the color of the Nile and the heavens — sacred, protective. In China blue-and-white porcelain (qinghua) defined export ceramics for centuries. In Mediterranean traditions blue wards off the evil eye. In America, IBM's blue logo helped earn it the nickname 'Big Blue'; in Japan, indigo (ai) is the centuries-old workwear dye that became the ground tone of an entire textile tradition. Across the world blue is consistently rated the most-liked color — in one ten-country survey it led every other color by 8 to 18 points.

In the wild

Mark Zuckerberg has said Facebook is blue because he is red-green colorblind. Levi's blue is the natural color of indigo on cotton. Twitter Blue (#1DA1F2) defined social-media blue for years before the 2023 rebrand to X scrapped it. The blue checkmark, the blue link, the blue 'send' button — blue has become the default color of digital trust, to the point of being a UX cliché.

How it reads

Blue tends to recede — the eye focuses blue light slightly in front of the retina, which can make blue elements feel deep or distant. It reads as trustworthy, calm, corporate, and (at the cool end) cold. Light blues read airy and clinical; mid blues are the default for tech and finance; deep blues read as luxurious or naval. The omnipresence of blue in software is real: most enterprise UIs reach for it because it offends the fewest stakeholders, which is also the reason it can feel like the absence of a real choice.

This particular tone

A vivid mid-tone — distinctive enough to anchor an identity, saturated enough to demand a quiet supporting palette.

Lightness band: At mid-lightness the hue carries its full character. This is the band where many identity colors live: bright enough to be distinctive at small sizes, deep enough to sit cleanly on a white canvas.

Saturation band: At this saturation the color is doing work. It reads as a brand statement, a sport accessory, or a UI signal. It should be used in small, deliberate doses against quieter neighbors; large fields at this saturation will exhaust the eye.

Brands using a similar color

Within the public brand-guidelines reference catalog, these are the closest matches to #2748EC.

  • Webflowprimary
    Webflow Blue · #4353FF
    →
  • Instagramprimary
    Sunset Indigo · #515BD4
    →
  • GitHubaccent
    Accent Blue · #0969DA
    →

Cultures using a similar color

From the cultural-palette catalog, these regions feature a color close to #2748EC.

  • MexicoTalavera Blue
    #2A52BE · Talavera Poblana tin-glazed pottery
    →
  • Korea (Obangsaek)Obangsaek Blue (청 / cheong)
    #1E68C1 · East — wood element, hanbok dyes
    →
  • Turkey (Istanbul)Iznik Blue
    #1E5599 · Ottoman Iznik tile cobalt-glaze, 16th c.
    →

Color guides

Go deeper on using blue and color in design.

Color PsychologyBlue Color Psychology in Branding: Why Every Bank and Tech Giant Chooses BlueHistoryIndigo: The Color That Built Trade Routes and Made Blue CheapColor TheoryColor in Typography: How to Use Color in Text Without Losing Legibility

Tonal strip

All lightness levels at this hue and saturation. Click any to navigate.

Palette moves

Instead of stopping at one swatch, use nearby, opposite, and tonal neighbors to branch into a broader palette.

Lighter companion
Indigo Tone Bright
#4360EF · hsl(230, 84%, 60%)
Darker companion
Indigo Core Bright
#1436E1 · hsl(230, 84%, 48%)
Complementary counterpoint
Amber Radiant Bright
#ECCB27 · hsl(50, 84%, 54%)
Analogous lead
Violet Radiant Bright
#4827EC · hsl(250, 84%, 54%)
Analogous echo
Steel Radiant Bright
#279AEC · hsl(205, 84%, 54%)
Triadic +120°
Merlot Radiant Bright
#EC2748 · hsl(350, 84%, 54%)
Triadic +240°
Leaf Radiant Bright
#48EC27 · hsl(110, 84%, 54%)
Split-comp +150°
Ember Radiant Bright
#EC6927 · hsl(20, 84%, 54%)
Split-comp +210°
Olive Radiant Bright
#ABEC27 · hsl(80, 84%, 54%)
Export preview
Base: Indigo Radiant Bright #2748EC
Lighter companion: Indigo Tone Bright #4360EF
Darker companion: Indigo Core Bright #1436E1
Complementary counterpoint: Amber Radiant Bright #ECCB27
Analogous lead: Violet Radiant Bright #4827EC
Analogous echo: Steel Radiant Bright #279AEC
Triadic +120°: Merlot Radiant Bright #EC2748
Triadic +240°: Leaf Radiant Bright #48EC27
Split-comp +150°: Ember Radiant Bright #EC6927
Split-comp +210°: Olive Radiant Bright #ABEC27

Compare

See how Indigo Radiant Bright compares side by side with related colors.

vsIndigo Tone BrightvsIndigo Core BrightvsAmber Radiant BrightvsViolet Radiant BrightvsSteel Radiant BrightvsMerlot Radiant Bright

Nearest neighbors

The closest archive matches by hue, saturation, and lightness.

Search by hex
Nearby match
Indigo Radiant Pure
#1E42F6 · hsl(230, 92%, 54%)
Nearby match
Indigo Core Bright
#1436E1 · hsl(230, 84%, 48%)
Nearby match
Indigo Tone Bright
#4360EF · hsl(230, 84%, 60%)
Nearby match
Indigo Radiant Vivid
#3350E1 · hsl(230, 74%, 54%)
Nearby match
Indigo Core Pure
#0A2FEB · hsl(230, 92%, 48%)
Nearby match
Indigo Tone Pure
#3B5AF7 · hsl(230, 92%, 60%)

Accessible pairings

Archive colors that meet WCAG contrast standards when paired with this color. Use as text-on-background or background-on-text.

Contrast checker
AA6.2:1
Amber Veil Faint
#FAFAF9
AA6.3:1
Amber Veil Muted
#FBFBF9
AA6.3:1
Amber Veil Dust
#FBFBF9
AA6.3:1
Amber Veil Soft
#FCFBF8
AA6.3:1
Amber Veil Clear
#FDFCF7
AA6.3:1
Amber Veil Vivid
#FEFCF6

Color Vision Simulation

How this color appears with different color vision deficiencies.

Full simulator
Deuteranopia
#3633CC
Protanopia
#3838D3
Tritanopia
#29BCB7
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Saturation ladder

Same hue and lightness, from gray to pure

Search
Indigo Radiant Faint#7E8295 · hsl(230, 10%, 54%)Indigo Radiant Muted#757C9F · hsl(230, 18%, 54%)Indigo Radiant Dust#6B75A8 · hsl(230, 26%, 54%)Indigo Radiant Soft#626FB2 · hsl(230, 34%, 54%)Indigo Radiant Clear#4A5FC9 · hsl(230, 54%, 54%)Indigo Radiant Vivid#3350E1 · hsl(230, 74%, 54%)Indigo Radiant Bright#2748EC · hsl(230, 84%, 54%)Indigo Radiant Pure#1E42F6 · hsl(230, 92%, 54%)
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