Recognised as Colour

#F38B57

#F38B57
Orange
Dark
Nearest: Coral

#F38B57 is a orange with RGB values 243, 139, 87 and HSL 20°, 87%, 65%. It is a dark colour, so black text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Coral.

Colour values

#F38B57#F38B57

HEX#F38B57

RGBrgb(243, 139, 87)

RGB (0–1)0.9529, 0.5451, 0.3412

RGB percentages95.3%, 54.5%, 34.1%

HSLhsl(20, 86.7%, 64.7%)

HSV / HSBhsv(20, 64.2%, 95.3%)

CMYK0%, 42.8%, 64.2%, 4.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,960,919

CSS custom property--colour: #F38B57;

Brightness & contrast

Relative luminance0.38208WCAG 2.x, 0 is black and 1 is white

Perceived brightness172.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.64:1

Contrast with white2.43:1WCAG normal text: Fail

Contrast with black8.64:1WCAG normal text: AAA

Greyscale equivalent#9D9D9D

Inverted#0C74A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#A79852no red cones; affects about 1% of men; ΔE 40 from the original

Deuteranopia#C0AF56no green cones; the most common form, about 1% of men; ΔE 40.6 from the original

Tritanopia#FF777Fno blue cones; rare, and affects men and women equally; ΔE 29.3 from the original

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

Contrast with white, large text2.43:1WCAG large text: Fail

Contrast with black, large text8.64:1WCAG large text: AAA

Named colours

Coral · ΔE 10.7 Light salmon · ΔE 12.5 Sandy brown · ΔE 13.6 Peru · ΔE 15.5 Chocolate · ΔE 17.4 Dark salmon · ΔE 18.3

Nearest named CSS colourCoral (#FF7F50)ΔE 10.7, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#57BFF3

Analogous#F35771, #F3D957

Triadic#57F38B, #8B57F3

Split complementary#57F3D9, #5771F3

Tetradic#71F357, #57BFF3, #D957F3

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FDEEE6

Lighter +20%#FACDB6

Lighter +10%#F6AC87

Darker −10%#F06A27

Darker −20%#D5510F

Darker −30%#A53F0C

Darker −40%#762D08

More saturated +25%#FF874B

Less saturated −25%#DC926D

Channel breakdown

R243

G139

B87

Red243 (95.3%)

Green139 (54.5%)

Blue87 (34.1%)

Hue20°

Saturation (HSL)86.67%

Lightness64.71%

Dominant channelRed

Hex per channelR F3 · G 8B · B 57

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

F38B57 (chemical formula)

Formula
1,338.094 g/mol
95 atoms

F38B57 has a molar mass of 1,338.094 g/mol, made up of 95 atoms across 2 elements: 38 × F, 57 × B.

Open this reading on its own page →

Molar mass

Molar mass1,338.094 g/mol

Total atoms per molecule95

Distinct elements2

Mass of one molecule2.2219574 × 10^-21 g

Molecules per gram4.5005364 × 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

F54%

B46%

Fluorine (F × 38)721.924 g/mol, 53.952%

Boron (B × 57)616.17 g/mol, 46.048%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Nerdulate something else

Nothing in mind? Surprise me · today’s page