Recognised as Colour

#CB3704

#CB3704
Orange
Dark
Nearest: Tomato

#CB3704 is a orange with RGB values 203, 55, 4 and HSL 15°, 96%, 41%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#CB3704#CB3704

HEX#CB3704

RGBrgb(203, 55, 4)

RGB (0–1)0.7961, 0.2157, 0.0157

RGB percentages79.6%, 21.6%, 1.6%

HSLhsl(15.4, 96.1%, 40.6%)

HSV / HSBhsv(15.4, 98%, 79.6%)

CMYK0%, 72.9%, 98%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,317,892

CSS custom property--colour: #CB3704;

Brightness & contrast

Relative luminance0.15438WCAG 2.x, 0 is black and 1 is white

Perceived brightness118.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.14:1

Contrast with white5.14:1WCAG normal text: AA

Contrast with black4.09:1WCAG normal text: Fail

Greyscale equivalent#535353

Inverted#34C8FB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#655800no red cones; affects about 1% of men; ΔE 61.7 from the original

Deuteranopia#897A00no green cones; the most common form, about 1% of men; ΔE 62 from the original

Tritanopia#E00030no blue cones; rare, and affects men and women equally; ΔE 23.5 from the original

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

Contrast with white, large text5.14:1WCAG large text: AAA

Contrast with black, large text4.09:1WCAG large text: AA

Named colours

Tomato · ΔE 19.2 Orange red · ΔE 20 Firebrick · ΔE 20.7 Chocolate · ΔE 21.7 Dark red · ΔE 24.6 Coral · ΔE 25.6

Nearest named CSS colourTomato (#FF6347)ΔE 19.25, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0498CB

Analogous#CB0435, #CB9B04

Triadic#04CB37, #3704CB

Split complementary#04CB9B, #0434CB

Tetradic#35CB04, #0498CB, #9B04CB

Tints, shades & saturation

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

Lighter +40%#FDB69E

Lighter +30%#FC916C

Lighter +20%#FB6B3A

Lighter +10%#FA4608

Darker −10%#992903

Darker −20%#671C02

Darker −30%#350E01

Darker −40%#030100

More saturated +25%#CF3500

Less saturated −25%#B1441E

Channel breakdown

R203

G55

Red203 (79.6%)

Green55 (21.6%)

Blue4 (1.6%)

Hue15.38°

Saturation (HSL)96.14%

Lightness40.59%

Dominant channelRed

Hex per channelR CB · G 37 · B 04

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB3704 (chemical formula)

Formula
40,052.251 g/mol
3705 atoms

CB3704 has a molar mass of 40,052.251 g/mol, made up of 3705 atoms across 2 elements: 1 × C, 3704 × B.

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Molar mass

Molar mass40,052.251 g/mol

Total atoms per molecule3705

Distinct elements2

Mass of one molecule6.6508328 × 10^-20 g

Molecules per gram1.5035711 × 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

C0%

B100%

Carbon (C)12.011 g/mol, 0.03%

Boron (B × 3704)40,040.24 g/mol, 99.97%

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