Information about #A51728 color

#A51728 color image

Basic facts about this digital color

In the Register's classification, #A51728 belongs to the Red Color Family, featuring High Saturation and Neutral brightness. The mix behind it: rgb(165, 23, 40) — 64.7% red, 9% green, 15.7% blue; the print equivalent is CMYK 0 / 56 / 49 / 35. New to color codes? See our guide to RGB color codes.

#A51728 is a energetic, saturated red that holds a balanced mid-tone. In practice it works well for bold branding moments and attention-grabbing details. In The Official Register of Color Names it is a hair away from Rosy Red (#A11A2E). Its next-closest registered neighbors are Falcons Red (#A71930) and Rambutan Red (#A72127).

Technically, the mix leans on its red channel (rgb(165, 23, 40)), which gives #A51728 its character. If you plan to put text on a #A51728 background, choose white — the contrast ratio is 7.6:1 (passing WCAG AAA), while black manages only 2.8:1. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.

#A51728 color variations

View this color variations of tints, shades, tones and hues.

#A51728 color tints

Tints look brighter, pastel, and less intense.
#A51728

Color has no name
#DE1E34

Color has no name
#E75566

Color has no name
#EF8D99

Color has no name
#F7C6CC

Color has no name
White

#FFFFFF

#A51728 color shades

Shades look darker, richer, and more solid.
#A51728

Color has no name
#84121F

Color has no name
#630D17

Color has no name
#42090F

Color has no name
#210407

Color has no name
Black

#000000

#A51728 color tones

Tones looks more sophisticated and complex than base colors.
#A51728

Color has no name
#A22735

Color has no name
#9C3A45

Color has no name
#944F57

Color has no name
#8B666A

Color has no name
Grey

#808080

#A51728 color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#9AA616

Color has no name
#A67816

Color has no name
#A63F16

Color has no name
#A51728

Color has no name
#A61660

Color has no name
#A6169A

Color has no name
#7816A6

Color has no name

#A51728 color harmonies

Color harmonies are pleasing color schemes created according to their position on a color wheel.

Complementary

Complementary color schemes are made by picking two opposite colors con the color wheel. They appear vibrant near to each other.

Complementary color schemes
#A51728
#A51728

Color has no name

#17A695
#17A695

Color has no name

Split complementary

Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.

Split complementary color scheme
#A51728
#A51728

Color has no name

#176FA6
#176FA6

Color has no name

#17A64E
#17A64E

Color has no name

Analogous

Analogous color schemes are made by picking three colors that are next to each other on the color wheel. They are perceived as calm and serene.

Analogous color scheme
#A64E17
#A64E17

Color has no name

#A51728
#A51728

Color has no name

#A6176F
#A6176F

Color has no name

Triadic

Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.

Triadic color scheme
#A51728
#A51728

Color has no name

#27A617
#27A617

Color has no name

#1727A6
#1727A6

Color has no name

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme
#A51728
#A51728

Color has no name

#A69517
#A69517

Color has no name

#17A695
#17A695

Color has no name

#1727A6
#1727A6

Color has no name

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme
#A51728
#A51728

Color has no name

#6FA617
#6FA617

Color has no name

#17A695
#17A695

Color has no name

#4E17A6
#4E17A6

Color has no name

Nearest named colors to #A51728

The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.

Rosy Red color link
Rosy Red

#A11A2E

Falcons Red color link
Falcons Red

#A71930

Rambutan Red color link
Rambutan Red

#A72127

Netherlands Red color link
Netherlands Red

#AE1C28

Upsdell Red color link
Upsdell Red

#AE2029

Wine Red color link
Wine Red

#B11226

Scarlet Sage color link
Scarlet Sage

#9D202F

Royal Red color link
Royal Red

#9B1C31

MIT Red color link
MIT Red

#A31F34

Ruby Red color link
Ruby Red

#9B111E

Vivid Burgundy color link
Vivid Burgundy

#9F1D35

Del Toro color link
Del Toro

#B11D20

#A51728 color backgrounds & wallpapers

Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.

#A51728 color image #A51728 color ORCN HD wallpaper 3840x2160 (Desktop)
#A51728 color image #A51728 color ORCN HD wallpaper 1170x2532 (Mobile)
#A51728 color image #A51728 color solid HD wallpaper 3840x2160 (Desktop)
#A51728 color image #A51728 color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#A51728
  • RGB165, 23, 40
  • CMYK0, 56, 49, 35
  • CSSrgb(165, 23, 40)
  • HSL353°, 76%, 37%
  • HSL Precise352.817°, 75.532%, 36.863%
  • HSV353°, 86%, 65%
  • HSB353°, 86%, 65%
  • Normalized R (0.0–1.0)0.647
  • Normalized G (0.0–1.0)0.090
  • Normalized B (0.0–1.0)0.157
  • GLSLvec3(0.647, 0.090, 0.157)
  • GLSL with alphavec4(0.647, 0.090, 0.157, 1.000)
  • HLSL / Metalfloat3(0.647, 0.090, 0.157)
  • Percentage of Red in RGB64.7%
  • Percentage of Green in RGB9%
  • Percentage of Blue in RGB15.7%
  • Color FamilyRed
  • Saturation FamilyHigh Saturation
  • Lightness FamilyNeutral
  • HEX IDA51728
  • DECIMAL ID10819368
  • Name LengthThis color has no name
  • Seen by search & AI crawlers19 times
  • Counting from2025-01-01

Copyright © 2021-2026 The Official Register of Color Names. All Rights Reserved.

ORCN is an independent private organisation that maintains a public register — not a governmental institution or an international standards organisation — in which a name is linked to a specific digital colour code. Registration gives the registrant the exclusive right, within the ORCN register, to have that name recorded against that colour code.

Important: a digital colour itself belongs to no one in law. That right exists only within the ORCN register: registration creates no ownership, trademark, copyright or design rights anywhere. Legal exclusivity outside the register, where it is available at all, arises separately under applicable trademark law and is generally limited to particular goods, services and jurisdictions.