Recognised as Colour

#CB2F57

#CB2F57
Red
Dark
Nearest: Indian red

#CB2F57 is a red with RGB values 203, 47, 87 and HSL 345°, 62%, 49%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#CB2F57#CB2F57

HEX#CB2F57

RGBrgb(203, 47, 87)

RGB (0–1)0.7961, 0.1843, 0.3412

RGB percentages79.6%, 18.4%, 34.1%

HSLhsl(344.6, 62.4%, 49%)

HSV / HSBhsv(344.6, 76.8%, 79.6%)

CMYK0%, 76.8%, 57.1%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,315,927

CSS custom property--colour: #CB2F57;

Brightness & contrast

Relative luminance0.15418WCAG 2.x, 0 is black and 1 is white

Perceived brightness120.3 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 black4.08:1WCAG normal text: Fail

Greyscale equivalent#535353

Inverted#34D0A8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A5958no red cones; affects about 1% of men; ΔE 64.1 from the original

Deuteranopia#827953no green cones; the most common form, about 1% of men; ΔE 65.2 from the original

Tritanopia#DE0040no blue cones; rare, and affects men and women equally; ΔE 19.4 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 text4.08:1WCAG large text: AA

Named colours

Indian red · ΔE 19.8 Crimson · ΔE 20.3 Brown · ΔE 21.4 Firebrick · ΔE 24.1 Pale violetred · ΔE 26.5 Light coral · ΔE 28

Nearest named CSS colourIndian red (#CD5C5C)ΔE 19.83, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2FCBA3

Analogous#CB2FA5, #CB552F

Triadic#57CB2F, #2F57CB

Split complementary#2FCB55, #2FA5CB

Tetradic#A5CB2F, #2FCBA3, #552FCB

Tints, shades & saturation

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

Lighter +40%#F4D2DA

Lighter +30%#EBA8B9

Lighter +20%#E17F98

Lighter +10%#D85577

Darker −10%#A22545

Darker −20%#781C34

Darker −30%#4F1222

Darker −40%#250910

More saturated +25%#EA1048

Less saturated −25%#AC4E66

Channel breakdown

R203

G47

B87

Red203 (79.6%)

Green47 (18.4%)

Blue87 (34.1%)

Hue344.62°

Saturation (HSL)62.4%

Lightness49.02%

Dominant channelRed

Hex per channelR CB · G 2F · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB2F57 (chemical formula)

Formula
1,116.517 g/mol
60 atoms

CB2F57 has a molar mass of 1,116.517 g/mol, made up of 60 atoms across 3 elements: 1 × C, 2 × B, 57 × F.

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Molar mass

Molar mass1,116.517 g/mol

Total atoms per molecule60

Distinct elements3

Mass of one molecule1.8540201 × 10^-21 g

Molecules per gram5.3936848 × 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

C1.1%

B1.9%

F97%

Carbon (C)12.011 g/mol, 1.076%

Boron (B × 2)21.62 g/mol, 1.936%

Fluorine (F × 57)1,082.886 g/mol, 96.988%

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