Colour

#FF2B00

#FF2B00
Red
Dark
Nearest: Red

#FF2B00 is a red with RGB values 255, 43, 0 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

#FF2B00#FF2B00

HEX#FF2B00

RGBrgb(255, 43, 0)

RGB (0–1)1, 0.1686, 0

RGB percentages100%, 16.9%, 0%

HSLhsl(10.1, 100%, 50%)

HSV / HSBhsv(10.1, 100%, 100%)

CMYK0%, 83.1%, 100%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,722,688

CSS custom property--colour: #FF2B00;

Brightness & contrast

Relative luminance0.22988WCAG 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#00D4FF

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 15.6 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 28.3 Crimson · ΔE 35.4 Coral · ΔE 37.9 Firebrick · ΔE 39.1

Nearest named CSS colourRed (#FF0000)ΔE 5.6, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00D4FF

Analogous#FF0054, #FFAB00

Triadic#00FF2B, #2B00FF

Split complementary#00FFAB, #0054FF

Tetradic#54FF00, #00D4FF, #AB00FF

Tints, shades & saturation

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

Lighter +40%#FFD5CC

Lighter +30%#FFAA99

Lighter +20%#FF8066

Lighter +10%#FF5533

Darker −10%#CC2200

Darker −20%#991A00

Darker −30%#661100

Darker −40%#330900

More saturated +25%#FF2B00

Less saturated −25%#DF4020

Channel breakdown

R255

G43

Red255 (100%)

Green43 (16.9%)

Blue0 (0%)

Hue10.12°

Saturation (HSL)100%

Lightness50%

Dominant channelRed

Hex per channelR FF · G 2B · B 00

Keep nerding

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

#FF2B00

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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