Recognised as Colour

#CB152C

#CB152C
Red
Dark
Nearest: Crimson

#CB152C is a red with RGB values 203, 21, 44 and HSL 352°, 81%, 44%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CB152C#CB152C

HEX#CB152C

RGBrgb(203, 21, 44)

RGB (0–1)0.7961, 0.0824, 0.1725

RGB percentages79.6%, 8.2%, 17.3%

HSLhsl(352.4, 81.2%, 43.9%)

HSV / HSBhsv(352.4, 89.7%, 79.6%)

CMYK0%, 89.7%, 78.3%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,309,228

CSS custom property--colour: #CB152C;

Brightness & contrast

Relative luminance0.13415WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.7:1

Contrast with white5.7:1WCAG normal text: AA

Contrast with black3.68:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#34EAD3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#564E2Bno red cones; affects about 1% of men; ΔE 70.8 from the original

Deuteranopia#817424no green cones; the most common form, about 1% of men; ΔE 71 from the original

Tritanopia#E00022no blue cones; rare, and affects men and women equally; ΔE 13.1 from the original

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

Contrast with white, large text5.7:1WCAG large text: AAA

Contrast with black, large text3.68:1WCAG large text: AA

Named colours

Crimson · ΔE 7.6 Firebrick · ΔE 10.8 Brown · ΔE 18.8 Dark red · ΔE 21.6 Tomato · ΔE 22.1 Maroon · ΔE 25.2

Nearest named CSS colourCrimson (#DC143C)ΔE 7.61, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#15CBB4

Analogous#CB1587, #CB5915

Triadic#2CCB15, #152CCB

Split complementary#15CB59, #1587CB

Tetradic#87CB15, #15CBB4, #5915CB

Tints, shades & saturation

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

Lighter +40%#F7B5BD

Lighter +30%#F38694

Lighter +20%#EE586B

Lighter +10%#E92A42

Darker −10%#9D1022

Darker −20%#6F0B18

Darker −30%#40070E

Darker −40%#120204

More saturated +25%#E0001C

Less saturated −25%#AF3141

Channel breakdown

R203

G21

B44

Red203 (79.6%)

Green21 (8.2%)

Blue44 (17.3%)

Hue352.42°

Saturation (HSL)81.25%

Lightness43.92%

Dominant channelRed

Hex per channelR CB · G 15 · B 2C

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

CB152C (chemical formula)

Formula
1,667.142 g/mol
154 atoms

CB152C has a molar mass of 1,667.142 g/mol, made up of 154 atoms across 2 elements: 2 × C, 152 × B.

Open this reading on its own page →

Molar mass

Molar mass1,667.142 g/mol

Total atoms per molecule154

Distinct elements2

Mass of one molecule2.7683544 × 10^-21 g

Molecules per gram3.6122542 × 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

C1.4%

B98.6%

Carbon (C × 2)24.022 g/mol, 1.441%

Boron (B × 152)1,643.12 g/mol, 98.559%

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