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Ruby Core Pure
Color detail

Ruby Core Pure

Red · Hue 10
Metrics
S 92% · L 48%
Contrast (WCAG)
on white4.2:1AA Largeon black4.9:1AA
Save to journalSign in to saveStart palette from thisRecent trail

About this color

Ruby Core Pure (#EB2F0A) belongs to the red family — hue 10°, 92% saturation, 48% 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-ruby-core-pure: #EB2F0A;
  --colorarchive-ruby-core-pure-hsl: hsl(10, 92%, 48%);
  --colorarchive-ruby-core-pure-rgb: rgb(235, 47, 10);
}

AI Color Names

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

Design Context

PassionateEnergeticUrgent
Common in

Food & Beverage · Entertainment · Retail

Pairs well with

White for high contrast CTAs, dark navy for sophistication, or gold for luxury

Design tip

Best for call-to-action buttons and sale banners. Use sparingly — red as a primary color can feel aggressive; as an accent, it commands attention.

Cultural context ▶

Red is universally associated with energy and action. In China, it signifies luck and prosperity. In Western markets, it drives urgency in sales.

Color Origins

Red family

Among the oldest pigments, and still the loudest signal.

Heritage

Red ochre is among the oldest pigments in the human visual record. Ochre reds lie beside burials at Qafzeh, Israel, about 100,000 years old; red ochre and costly cinnabar lit Pompeian walls; cinnabar was prized from Rome to China. Madder, kermes, and later New World cochineal built fortunes before synthetic alizarin arrived in 1869 and collapsed the madder market almost overnight.

Across cultures

In China red signals fortune and weddings, painted on doors and lanterns and given in money envelopes. In much of South Asia red is the bridal color (saris, sindoor) for the same reason. Western traditions split red between love (Valentine's) and danger (stoplights, balance sheets). Across the Christian liturgy red marks martyrdom and Pentecost; across cinema it has long marked the femme fatale.

In the wild

Coca-Cola has used red since its earliest signage. Netflix and YouTube both build their identities around a single saturated red. Christian Louboutin trademarked a single red — Pantone 18-1663 — on the soles of his shoes. Ferrari's racing red began as the Italian national racing color (Rosso Corsa). Emergency stop buttons are red on a yellow background under international machinery-safety standards, a convention so widespread it functions as international iconography.

How it reads

Red advances. On a page it draws the eye first; in a UI it implies destructive action or urgent state. Increasing saturation pushes it toward warning; reducing saturation moves it toward earthen, terra-cotta, comfort. Pairing red with white reads as energetic and consumer-facing; pairing it with black reads cinematic and luxurious; pairing it with cream reads as heritage or hospitality.

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 #EB2F0A.

  • JD.com 京东primary
    JD Red · #E1251B
    →
  • McDonald'sprimary
    Mickey D Red · #DA291C
    →
  • Taobao 淘宝primary
    Taobao Orange · #FF4400
    →

Cultures using a similar color

From the cultural-palette catalog, these regions feature a color close to #EB2F0A.

  • England (London)Underground Red
    #DC241F · Underground bullseye, 1908; Edward Johnston redesign, 1917–19
    →
  • IndiaSindoor Vermillion
    #D32F2F · Ceremonial vermilion
    →
  • ScandinaviaMarimekko Poppy Red
    #D03030 · Unikko print, Marimekko 1964
    →

Color guides

Go deeper on using red and color in design.

UI DesignColor in Financial UI: Trust, Data Visualization, and the Red/Green ConventionColor TheoryWarm Color Palette Guide: Reds, Oranges, Yellows, and Their NeutralsDesign SystemsColor Token Naming Conventions: Primitive, Semantic, and Component Layers

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
Ruby Radiant Pure
#F6421E · hsl(10, 92%, 54%)
Darker companion
Ruby Velvet Pure
#CE2909 · hsl(10, 92%, 42%)
Complementary counterpoint
Cerulean Core Pure
#0AC5EB · hsl(190, 92%, 48%)
Analogous lead
Coral Core Pure
#EB7A0A · hsl(30, 92%, 48%)
Analogous echo
Merlot Core Pure
#EB0A2F · hsl(350, 92%, 48%)
Triadic +120°
Mint Core Pure
#0AEB2F · hsl(130, 92%, 48%)
Triadic +240°
Violet Core Pure
#2F0AEB · hsl(250, 92%, 48%)
Split-comp +150°
Teal Core Pure
#0AEBA0 · hsl(160, 92%, 48%)
Split-comp +210°
Cobalt Core Pure
#0A55EB · hsl(220, 92%, 48%)
Export preview
Base: Ruby Core Pure #EB2F0A
Lighter companion: Ruby Radiant Pure #F6421E
Darker companion: Ruby Velvet Pure #CE2909
Complementary counterpoint: Cerulean Core Pure #0AC5EB
Analogous lead: Coral Core Pure #EB7A0A
Analogous echo: Merlot Core Pure #EB0A2F
Triadic +120°: Mint Core Pure #0AEB2F
Triadic +240°: Violet Core Pure #2F0AEB
Split-comp +150°: Teal Core Pure #0AEBA0
Split-comp +210°: Cobalt Core Pure #0A55EB

Compare

See how Ruby Core Pure compares side by side with related colors.

vsRuby Radiant PurevsRuby Velvet PurevsCerulean Core PurevsCoral Core PurevsMerlot Core PurevsMint Core Pure

Nearest neighbors

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

Search by hex
Nearby match
Ruby Core Bright
#E13614 · hsl(10, 84%, 48%)
Nearby match
Ruby Velvet Pure
#CE2909 · hsl(10, 92%, 42%)
Nearby match
Ruby Radiant Pure
#F6421E · hsl(10, 92%, 54%)
Nearby match
Scarlet Core Pure
#EB1D0A · hsl(5, 92%, 48%)
Nearby match
Vermillion Core Pure
#EB420A · hsl(15, 92%, 48%)
Nearby match
Ruby Velvet Bright
#C52F11 · hsl(10, 84%, 42%)

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
AA4.5:1
Iris Ink Pure
#030345
AA4.5:1
Amethyst Ink Pure
#080345
AA Large4.1:1
Cerulean Veil Faint
#F9FAFA
AA Large4.1:1
Cerulean Veil Muted
#F9FBFB
AA Large4.1:1
Cerulean Veil Dust
#F9FBFB
AA Large4.1:1
Cerulean Veil Soft
#F8FBFC

Color Vision Simulation

How this color appears with different color vision deficiencies.

Full simulator
Deuteranopia
#C0CA1B
Protanopia
#B9B718
Tritanopia
#E61F21
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Saturation ladder

Same hue and lightness, from gray to pure

Search
Ruby Core Faint#87726E · hsl(10, 10%, 48%)Ruby Core Muted#906C64 · hsl(10, 18%, 48%)Ruby Core Dust#9A655B · hsl(10, 26%, 48%)Ruby Core Soft#A45F51 · hsl(10, 34%, 48%)Ruby Core Clear#BC4E38 · hsl(10, 54%, 48%)Ruby Core Vivid#D53E20 · hsl(10, 74%, 48%)Ruby Core Bright#E13614 · hsl(10, 84%, 48%)Ruby Core Pure#EB2F0A · hsl(10, 92%, 48%)
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