Colour

#FF2A17

#FF2A17
Red
Dark
Nearest: Red

#FF2A17 is a red with RGB values 255, 42, 23 and HSL 5°, 100%, 55%. 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

#FF2A17#FF2A17

HEX#FF2A17

RGBrgb(255, 42, 23)

RGB (0–1)1, 0.1647, 0.0902

RGB percentages100%, 16.5%, 9%

HSLhsl(4.9, 100%, 54.5%)

HSV / HSBhsv(4.9, 91%, 100%)

CMYK0%, 83.5%, 91%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,722,455

CSS custom property--colour: #FF2A17;

Brightness & contrast

Relative luminance0.22978WCAG 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#565656

Inverted#00D5E8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#74660Dno 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 81.2 from the original

Tritanopia#FF002Ano blue cones; rare, and affects men and women equally; ΔE 11 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 7.4 Orange red · ΔE 10.5 Tomato · ΔE 24.4 Crimson · ΔE 29.8 Firebrick · ΔE 34.9 Coral · ΔE 35.4

Nearest named CSS colourRed (#FF0000)ΔE 7.38, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17ECFF

Analogous#FF1778, #FF9E17

Triadic#17FF2A, #2A17FF

Split complementary#17FF9E, #1778FF

Tetradic#78FF17, #17ECFF, #9E17FF

Tints, shades & saturation

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

Lighter +40%#FFE5E3

Lighter +30%#FFB6B0

Lighter +20%#FF887D

Lighter +10%#FF594A

Darker −10%#E31300

Darker −20%#B00E00

Darker −30%#7D0A00

Darker −40%#4A0600

More saturated +25%#FF2A17

Less saturated −25%#E24234

Channel breakdown

R255

G42

B23

Red255 (100%)

Green42 (16.5%)

Blue23 (9%)

Hue4.91°

Saturation (HSL)100%

Lightness54.51%

Dominant channelRed

Hex per channelR FF · G 2A · B 17

Keep nerding

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

#FF2A17

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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