Colour

#FF373C

#FF373C
Red
Dark
Nearest: Crimson

#FF373C is a red with RGB values 255, 55, 60 and HSL 359°, 100%, 61%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF373C#FF373C

HEX#FF373C

RGBrgb(255, 55, 60)

RGB (0–1)1, 0.2157, 0.2353

RGB percentages100%, 21.6%, 23.5%

HSLhsl(358.5, 100%, 60.8%)

HSV / HSBhsv(358.5, 78.4%, 100%)

CMYK0%, 78.4%, 76.5%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,725,820

CSS custom property--colour: #FF373C;

Brightness & contrast

Relative luminance0.24319WCAG 2.x, 0 is black and 1 is white

Perceived brightness147.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.86:1

Contrast with white3.58:1WCAG normal text: Fail

Contrast with black5.86:1WCAG normal text: AA

Greyscale equivalent#626262

Inverted#00C8C3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#776C3Ano red cones; affects about 1% of men; ΔE 78.5 from the original

Deuteranopia#A89733no green cones; the most common form, about 1% of men; ΔE 78.8 from the original

Tritanopia#FF003Cno blue cones; rare, and affects men and women equally; ΔE 9.1 from the original

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

Contrast with white, large text3.58:1WCAG large text: AA

Contrast with black, large text5.86:1WCAG large text: AAA

Named colours

Crimson · ΔE 15.6 Tomato · ΔE 16.2 Red · ΔE 22.6 Orange red · ΔE 23.6 Firebrick · ΔE 25.7 Coral · ΔE 29.7

Nearest named CSS colourCrimson (#DC143C)ΔE 15.65, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#37FFFA

Analogous#FF37A0, #FF9637

Triadic#3CFF37, #373CFF

Split complementary#37FF96, #37A0FF

Tetradic#A0FF37, #37FFFA, #9637FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD0D1

Lighter +20%#FF9D9F

Lighter +10%#FF6A6E

Darker −10%#FF040A

Darker −20%#D00005

Darker −30%#9D0004

Darker −40%#6A0003

More saturated +25%#FF373C

Less saturated −25%#E65054

Channel breakdown

R255

G55

B60

Red255 (100%)

Green55 (21.6%)

Blue60 (23.5%)

Hue358.5°

Saturation (HSL)100%

Lightness60.78%

Dominant channelRed

Hex per channelR FF · G 37 · B 3C

Keep nerding

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

#FF373C

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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