Recognised as Colour

#FF6B45

#FF6B45
Red
Dark
Nearest: Tomato

#FF6B45 is a red with RGB values 255, 107, 69 and HSL 12°, 100%, 64%. It is a dark colour, so black text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Tomato.

Colour values

#FF6B45#FF6B45

HEX#FF6B45

RGBrgb(255, 107, 69)

RGB (0–1)1, 0.4196, 0.2706

RGB percentages100%, 42%, 27.1%

HSLhsl(12.3, 100%, 63.5%)

HSV / HSBhsv(12.3, 72.9%, 100%)

CMYK0%, 58%, 72.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,739,141

CSS custom property--colour: #FF6B45;

Brightness & contrast

Relative luminance0.32205WCAG 2.x, 0 is black and 1 is white

Perceived brightness163.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.44:1

Contrast with white2.82:1WCAG normal text: Fail

Contrast with black7.44:1WCAG normal text: AAA

Greyscale equivalent#888888

Inverted#0094BA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#948540no red cones; affects about 1% of men; ΔE 59.2 from the original

Deuteranopia#B8A641no green cones; the most common form, about 1% of men; ΔE 60 from the original

Tritanopia#FF4963no blue cones; rare, and affects men and women equally; ΔE 27.1 from the original

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

Contrast with white, large text2.82:1WCAG large text: Fail

Contrast with black, large text7.44:1WCAG large text: AAA

Named colours

Tomato · ΔE 4.6 Coral · ΔE 9.8 Chocolate · ΔE 20.3 Salmon · ΔE 22.1 Orange red · ΔE 24.9 Firebrick · ΔE 26.9

Nearest named CSS colourTomato (#FF6347)ΔE 4.56, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#45D9FF

Analogous#FF457C, #FFC845

Triadic#45FF6B, #6B45FF

Split complementary#45FFC8, #457CFF

Tetradic#7CFF45, #45D9FF, #C845FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFE5DE

Lighter +20%#FFBCAB

Lighter +10%#FF9478

Darker −10%#FF4212

Darker −20%#DE2D00

Darker −30%#AB2300

Darker −40%#781900

More saturated +25%#FF6B45

Less saturated −25%#E8795C

Channel breakdown

R255

G107

B69

Red255 (100%)

Green107 (42%)

Blue69 (27.1%)

Hue12.26°

Saturation (HSL)100%

Lightness63.53%

Dominant channelRed

Hex per channelR FF · G 6B · B 45

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF6B45 (chemical formula)

Formula
619.436 g/mol
52 atoms

FF6B45 has a molar mass of 619.436 g/mol, made up of 52 atoms across 2 elements: 7 × F, 45 × B.

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Molar mass

Molar mass619.436 g/mol

Total atoms per molecule52

Distinct elements2

Mass of one molecule1.0285977 × 10^-21 g

Molecules per gram9.7219741 × 10^20

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

F21.5%

B78.5%

Fluorine (F × 7)132.986 g/mol, 21.469%

Boron (B × 45)486.45 g/mol, 78.531%

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