Recognised as Colour

#FB0331

#FB0331
Red
Dark
Nearest: Crimson

#FB0331 is a red with RGB values 251, 3, 49 and HSL 349°, 98%, 50%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FB0331#FB0331

HEX#FB0331

RGBrgb(251, 3, 49)

RGB (0–1)0.9843, 0.0118, 0.1922

RGB percentages98.4%, 1.2%, 19.2%

HSLhsl(348.9, 97.6%, 49.8%)

HSV / HSBhsv(348.9, 98.8%, 98.4%)

CMYK0%, 98.8%, 80.5%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,450,353

CSS custom property--colour: #FB0331;

Brightness & contrast

Relative luminance0.20796WCAG 2.x, 0 is black and 1 is white

Perceived brightness138.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.16:1

Contrast with white4.07:1WCAG normal text: Fail

Contrast with black5.16:1WCAG normal text: AA

Greyscale equivalent#3B3B3B

Inverted#04FCCE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#695F2Fno red cones; affects about 1% of men; ΔE 85.7 from the original

Deuteranopia#9F8E25no green cones; the most common form, about 1% of men; ΔE 85.3 from the original

Tritanopia#FF0020no blue cones; rare, and affects men and women equally; ΔE 9.4 from the original

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

Contrast with white, large text4.07:1WCAG large text: AA

Contrast with black, large text5.16:1WCAG large text: AAA

Named colours

Crimson · ΔE 17.7 Red · ΔE 19.3 Tomato · ΔE 23.8 Orange red · ΔE 24.6 Firebrick · ΔE 29.2 Coral · ΔE 37.2

Nearest named CSS colourCrimson (#DC143C)ΔE 17.66, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#03FBCD

Analogous#FB03AD, #FB5103

Triadic#31FB03, #0331FB

Split complementary#03FB51, #03ADFB

Tetradic#ADFB03, #03FBCD, #5103FB

Tints, shades & saturation

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

Lighter +40%#FECCD5

Lighter +30%#FE99AC

Lighter +20%#FD6783

Lighter +10%#FD345A

Darker −10%#C90227

Darker −20%#96021D

Darker −30%#640113

Darker −40%#31010A

More saturated +25%#FE002F

Less saturated −25%#DB2345

Channel breakdown

R251

B49

Red251 (98.4%)

Green3 (1.2%)

Blue49 (19.2%)

Hue348.87°

Saturation (HSL)97.64%

Lightness49.8%

Dominant channelRed

Hex per channelR FB · G 03 · B 31

Keep nerding

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

#FB0331

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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