Colour

#FF2D05

#FF2D05
Red
Dark
Nearest: Red

#FF2D05 is a red with RGB values 255, 45, 5 and HSL 10°, 100%, 51%. 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

#FF2D05#FF2D05

HEX#FF2D05

RGBrgb(255, 45, 5)

RGB (0–1)1, 0.1765, 0.0196

RGB percentages100%, 17.6%, 2%

HSLhsl(9.6, 100%, 51%)

HSV / HSBhsv(9.6, 98%, 100%)

CMYK0%, 82.4%, 98%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,723,205

CSS custom property--colour: #FF2D05;

Brightness & contrast

Relative luminance0.23148WCAG 2.x, 0 is black and 1 is white

Perceived brightness143.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.63:1

Contrast with white3.73:1WCAG normal text: Fail

Contrast with black5.63:1WCAG normal text: AA

Greyscale equivalent#575757

Inverted#00D2FA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#766700no red cones; affects about 1% of men; ΔE 80.8 from the original

Deuteranopia#A89400no green cones; the most common form, about 1% of men; ΔE 79.9 from the original

Tritanopia#FF002Ano blue cones; rare, and affects men and women equally; ΔE 15.7 from the original

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

Contrast with white, large text3.73:1WCAG large text: AA

Contrast with black, large text5.63:1WCAG large text: AAA

Named colours

Red · ΔE 6 Orange red · ΔE 7.4 Tomato · ΔE 27.2 Crimson · ΔE 34.4 Coral · ΔE 36.9 Firebrick · ΔE 38.1

Nearest named CSS colourRed (#FF0000)ΔE 6, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#05D7FF

Analogous#FF055A, #FFAA05

Triadic#05FF2D, #2D05FF

Split complementary#05FFAA, #055AFF

Tetradic#5AFF05, #05D7FF, #AA05FF

Tints, shades & saturation

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

Lighter +40%#FFD8D1

Lighter +30%#FFAE9E

Lighter +20%#FF836B

Lighter +10%#FF5838

Darker −10%#D12100

Darker −20%#9E1900

Darker −30%#6B1100

Darker −40%#380900

More saturated +25%#FF2D05

Less saturated −25%#E04224

Channel breakdown

R255

G45

Red255 (100%)

Green45 (17.6%)

Blue5 (2%)

Hue9.6°

Saturation (HSL)100%

Lightness50.98%

Dominant channelRed

Hex per channelR FF · G 2D · B 05

Keep nerding

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#FF2D05

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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