Colour

#FF2B01

#FF2B01
Red
Dark
Nearest: Red

#FF2B01 is a red with RGB values 255, 43, 1 and HSL 10°, 100%, 50%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF2B01#FF2B01

HEX#FF2B01

RGBrgb(255, 43, 1)

RGB (0–1)1, 0.1686, 0.0039

RGB percentages100%, 16.9%, 0.4%

HSLhsl(9.9, 100%, 50.2%)

HSV / HSBhsv(9.9, 99.6%, 100%)

CMYK0%, 83.1%, 99.6%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,722,689

CSS custom property--colour: #FF2B01;

Brightness & contrast

Relative luminance0.2299WCAG 2.x, 0 is black and 1 is white

Perceived brightness143.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.6:1

Contrast with white3.75:1WCAG normal text: Fail

Contrast with black5.6:1WCAG normal text: AA

Greyscale equivalent#555555

Inverted#00D4FE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#756600no red cones; affects about 1% of men; ΔE 81.4 from the original

Deuteranopia#A79400no green cones; the most common form, about 1% of men; ΔE 80.8 from the original

Tritanopia#FF0028no blue cones; rare, and affects men and women equally; ΔE 15.4 from the original

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

Contrast with white, large text3.75:1WCAG large text: AA

Contrast with black, large text5.6:1WCAG large text: AAA

Named colours

Red · ΔE 5.6 Orange red · ΔE 7.6 Tomato · ΔE 28.1 Crimson · ΔE 35.2 Coral · ΔE 37.8 Firebrick · ΔE 38.9

Nearest named CSS colourRed (#FF0000)ΔE 5.57, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01D5FF

Analogous#FF0156, #FFAA01

Triadic#01FF2B, #2B01FF

Split complementary#01FFAA, #0156FF

Tetradic#56FF01, #01D5FF, #AA01FF

Tints, shades & saturation

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

Lighter +40%#FFD5CD

Lighter +30%#FFAB9A

Lighter +20%#FF8067

Lighter +10%#FF5634

Darker −10%#CD2200

Darker −20%#9A1900

Darker −30%#671100

Darker −40%#340900

More saturated +25%#FF2B01

Less saturated −25%#DF4021

Channel breakdown

R255

G43

Red255 (100%)

Green43 (16.9%)

Blue1 (0.4%)

Hue9.92°

Saturation (HSL)100%

Lightness50.2%

Dominant channelRed

Hex per channelR FF · G 2B · B 01

Keep nerding

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

#FF2B01

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

Nerdulate something else