Colour

#FF5533

#FF5533
Red
Dark
Nearest: Tomato

#FF5533 is a red with RGB values 255, 85, 51 and HSL 10°, 100%, 60%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#FF5533#FF5533

HEX#FF5533

HEX (short)#F53

RGBrgb(255, 85, 51)

RGB (0–1)1, 0.3333, 0.2

RGB percentages100%, 33.3%, 20%

HSLhsl(10, 100%, 60%)

HSV / HSBhsv(10, 80%, 100%)

CMYK0%, 66.7%, 80%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,733,491

CSS custom property--colour: #FF5533;

Brightness & contrast

Relative luminance0.27996WCAG 2.x, 0 is black and 1 is white

Perceived brightness154.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.6:1

Contrast with white3.18:1WCAG normal text: Fail

Contrast with black6.6:1WCAG normal text: AA

Greyscale equivalent#777777

Inverted#00AACC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#87782Dno red cones; affects about 1% of men; ΔE 68.2 from the original

Deuteranopia#B19E2Bno green cones; the most common form, about 1% of men; ΔE 68.7 from the original

Tritanopia#FF1B4Fno blue cones; rare, and affects men and women equally; ΔE 27.1 from the original

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

Contrast with white, large text3.18:1WCAG large text: AA

Contrast with black, large text6.6:1WCAG large text: AAA

Named colours

Tomato · ΔE 9.4 Orange red · ΔE 15.9 Coral · ΔE 20.1 Red · ΔE 22.7 Crimson · ΔE 25.5 Chocolate · ΔE 26.2

Nearest named CSS colourTomato (#FF6347)ΔE 9.42, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#33DDFF

Analogous#FF3377, #FFBB33

Triadic#33FF55, #5533FF

Split complementary#33FFBB, #3377FF

Tetradic#77FF33, #33DDFF, #BB33FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD5CC

Lighter +20%#FFAA99

Lighter +10%#FF7F66

Darker −10%#FF2A00

Darker −20%#CC2200

Darker −30%#991900

Darker −40%#661100

More saturated +25%#FF5533

Less saturated −25%#E6664C

Channel breakdown

R255

G85

B51

Red255 (100%)

Green85 (33.3%)

Blue51 (20%)

Hue10°

Saturation (HSL)100%

Lightness60%

Dominant channelRed

Hex per channelR FF · G 55 · B 33

Keep nerding

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

#FF5533

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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