Recognised as Colour

#FF571A

#FF571A
Orange
Dark
Nearest: Orange red

#FF571A is a orange with RGB values 255, 87, 26 and HSL 16°, 100%, 55%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF571A#FF571A

HEX#FF571A

RGBrgb(255, 87, 26)

RGB (0–1)1, 0.3412, 0.102

RGB percentages100%, 34.1%, 10.2%

HSLhsl(16, 100%, 55.1%)

HSV / HSBhsv(16, 89.8%, 100%)

CMYK0%, 65.9%, 89.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,733,978

CSS custom property--colour: #FF571A;

Brightness & contrast

Relative luminance0.28151WCAG 2.x, 0 is black and 1 is white

Perceived brightness154.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.63:1

Contrast with white3.17:1WCAG normal text: Fail

Contrast with black6.63:1WCAG normal text: AA

Greyscale equivalent#767676

Inverted#00A8E5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#897908no red cones; affects about 1% of men; ΔE 67.6 from the original

Deuteranopia#B29F08no green cones; the most common form, about 1% of men; ΔE 68.3 from the original

Tritanopia#FF1C4Dno blue cones; rare, and affects men and women equally; ΔE 35.2 from the original

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

Contrast with white, large text3.17:1WCAG large text: AA

Contrast with black, large text6.63:1WCAG large text: AAA

Named colours

Orange red · ΔE 8.2 Tomato · ΔE 18.4 Red · ΔE 20 Coral · ΔE 24.4 Chocolate · ΔE 25.9 Dark orange · ΔE 28.7

Nearest named CSS colourOrange red (#FF4500)ΔE 8.17, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1AC2FF

Analogous#FF1A50, #FFC91A

Triadic#1AFF57, #571AFF

Split complementary#1AFFC9, #1A50FF

Tetradic#50FF1A, #1AC2FF, #C91AFF

Tints, shades & saturation

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

Lighter +40%#FFEDE6

Lighter +30%#FFC7B3

Lighter +20%#FFA280

Lighter +10%#FF7C4D

Darker −10%#E63D00

Darker −20%#B33000

Darker −30%#802200

Darker −40%#4D1500

More saturated +25%#FF571A

Less saturated −25%#E26437

Channel breakdown

R255

G87

B26

Red255 (100%)

Green87 (34.1%)

Blue26 (10.2%)

Hue15.98°

Saturation (HSL)100%

Lightness55.1%

Dominant channelRed

Hex per channelR FF · G 57 · B 1A

Keep nerding

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

#FF571A

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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