Recognised as Colour

#FF013A

#FF013A
Red
Dark
Nearest: Crimson

#FF013A is a red with RGB values 255, 1, 58 and HSL 347°, 100%, 50%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF013A#FF013A

HEX#FF013A

RGBrgb(255, 1, 58)

RGB (0–1)1, 0.0039, 0.2275

RGB percentages100%, 0.4%, 22.7%

HSLhsl(346.5, 100%, 50.2%)

HSV / HSBhsv(346.5, 99.6%, 100%)

CMYK0%, 99.6%, 77.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,711,994

CSS custom property--colour: #FF013A;

Brightness & contrast

Relative luminance0.21587WCAG 2.x, 0 is black and 1 is white

Perceived brightness140.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.32:1

Contrast with white3.95:1WCAG normal text: Fail

Contrast with black5.32:1WCAG normal text: AA

Greyscale equivalent#3B3B3B

Inverted#00FEC5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A6139no red cones; affects about 1% of men; ΔE 86.8 from the original

Deuteranopia#A19130no green cones; the most common form, about 1% of men; ΔE 86.8 from the original

Tritanopia#FF0024no blue cones; rare, and affects men and women equally; ΔE 11.3 from the original

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

Contrast with white, large text3.95:1WCAG large text: AA

Contrast with black, large text5.32:1WCAG large text: AAA

Named colours

Crimson · ΔE 15.9 Red · ΔE 23.2 Tomato · ΔE 24.7 Orange red · ΔE 28.4 Firebrick · ΔE 29.6 Brown · ΔE 37.6

Nearest named CSS colourCrimson (#DC143C)ΔE 15.89, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01FFC6

Analogous#FF01B9, #FF4701

Triadic#3AFF01, #013AFF

Split complementary#01FF47, #01B9FF

Tetradic#B9FF01, #01FFC6, #4701FF

Tints, shades & saturation

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

Lighter +40%#FFCDD8

Lighter +30%#FF9AB1

Lighter +20%#FF6789

Lighter +10%#FF3462

Darker −10%#CD002E

Darker −20%#9A0023

Darker −30%#670017

Darker −40%#34000C

More saturated +25%#FF013A

Less saturated −25%#DF214C

Channel breakdown

R255

B58

Red255 (100%)

Green1 (0.4%)

Blue58 (22.7%)

Hue346.54°

Saturation (HSL)100%

Lightness50.2%

Dominant channelRed

Hex per channelR FF · G 01 · B 3A

Keep nerding

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

#FF013A

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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