Recognised as Colour

#CD401F

#CD401F
Red
Dark
Nearest: Firebrick

#CD401F is a red with RGB values 205, 64, 31 and HSL 11°, 74%, 46%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CD401F#CD401F

HEX#CD401F

RGBrgb(205, 64, 31)

RGB (0–1)0.8039, 0.251, 0.1216

RGB percentages80.4%, 25.1%, 12.2%

HSLhsl(11.4, 73.7%, 46.3%)

HSV / HSBhsv(11.4, 84.9%, 80.4%)

CMYK0%, 68.8%, 84.9%, 19.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,451,295

CSS custom property--colour: #CD401F;

Brightness & contrast

Relative luminance0.16745WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.83:1

Contrast with white4.83:1WCAG normal text: AA

Contrast with black4.35:1WCAG normal text: Fail

Greyscale equivalent#5C5C5C

Inverted#32BFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A5E19no red cones; affects about 1% of men; ΔE 59.1 from the original

Deuteranopia#8D7D16no green cones; the most common form, about 1% of men; ΔE 59.1 from the original

Tritanopia#E2063Ano blue cones; rare, and affects men and women equally; ΔE 23.6 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text4.83:1WCAG large text: AAA

Contrast with black, large text4.35:1WCAG large text: AA

Named colours

Firebrick · ΔE 14.7 Tomato · ΔE 15 Chocolate · ΔE 20.3 Coral · ΔE 21.3 Dark red · ΔE 21.6 Brown · ΔE 21.8

Nearest named CSS colourFirebrick (#B22222)ΔE 14.66, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#1FACCD

Analogous#CD1F55, #CD971F

Triadic#1FCD40, #401FCD

Split complementary#1FCD97, #1F55CD

Tetradic#55CD1F, #1FACCD, #971FCD

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F6CCC2

Lighter +30%#EFA796

Lighter +20%#E8826A

Lighter +10%#E25C3D

Darker −10%#A13218

Darker −20%#742412

Darker −30%#48170B

Darker −40%#1C0904

More saturated +25%#EB2E01

Less saturated −25%#B0523C

Channel breakdown

R205

G64

B31

Red205 (80.4%)

Green64 (25.1%)

Blue31 (12.2%)

Hue11.38°

Saturation (HSL)73.73%

Lightness46.27%

Dominant channelRed

Hex per channelR CD · G 40 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Cd401F (chemical formula)

Formula
45,095.408 g/mol
402 atoms

Cd401F has a molar mass of 45,095.408 g/mol, made up of 402 atoms across 2 elements: 401 × Cd, 1 × F.

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Molar mass

Molar mass45,095.408 g/mol

Total atoms per molecule402

Distinct elements2

Mass of one molecule7.4882687 × 10^-20 g

Molecules per gram1.3354222 × 10^19

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

Cd100%

F0%

Cadmium (Cd × 401)45,076.41 g/mol, 99.958%

Fluorine (F)18.998 g/mol, 0.042%

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