Colour

#FF511A

#FF511A
Red
Dark
Nearest: Orange red

#FF511A is a red with RGB values 255, 81, 26 and HSL 14°, 100%, 55%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF511A#FF511A

HEX#FF511A

RGBrgb(255, 81, 26)

RGB (0–1)1, 0.3176, 0.102

RGB percentages100%, 31.8%, 10.2%

HSLhsl(14.4, 100%, 55.1%)

HSV / HSBhsv(14.4, 89.8%, 100%)

CMYK0%, 68.2%, 89.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,732,442

CSS custom property--colour: #FF511A;

Brightness & contrast

Relative luminance0.27219WCAG 2.x, 0 is black and 1 is white

Perceived brightness152.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.44:1

Contrast with white3.26:1WCAG normal text: Fail

Contrast with black6.44:1WCAG normal text: AA

Greyscale equivalent#727272

Inverted#00AEE5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#86760Ano red cones; affects about 1% of men; ΔE 69.7 from the original

Deuteranopia#B09D06no green cones; the most common form, about 1% of men; ΔE 70.4 from the original

Tritanopia#FF0048no blue cones; rare, and affects men and women equally; ΔE 33.2 from the original

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

Contrast with white, large text3.26:1WCAG large text: AA

Contrast with black, large text6.44:1WCAG large text: AAA

Named colours

Orange red · ΔE 6.8 Red · ΔE 17.7 Tomato · ΔE 18.6 Coral · ΔE 25.9 Chocolate · ΔE 27.8 Dark orange · ΔE 31.2

Nearest named CSS colourOrange red (#FF4500)ΔE 6.76, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1AC8FF

Analogous#FF1A55, #FFC41A

Triadic#1AFF51, #511AFF

Split complementary#1AFFC4, #1A55FF

Tetradic#55FF1A, #1AC8FF, #C41AFF

Tints, shades & saturation

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

Lighter +40%#FFECE6

Lighter +30%#FFC5B3

Lighter +20%#FF9F80

Lighter +10%#FF784D

Darker −10%#E63700

Darker −20%#B32B00

Darker −30%#801F00

Darker −40%#4D1200

More saturated +25%#FF511A

Less saturated −25%#E26037

Channel breakdown

R255

G81

B26

Red255 (100%)

Green81 (31.8%)

Blue26 (10.2%)

Hue14.41°

Saturation (HSL)100%

Lightness55.1%

Dominant channelRed

Hex per channelR FF · G 51 · B 1A

Keep nerding

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

#FF511A

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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