Colour

#F40905

#F40905
Red
Dark
Nearest: Red

#F40905 is a red with RGB values 244, 9, 5 and HSL 1°, 96%, 49%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F40905#F40905

HEX#F40905

RGBrgb(244, 9, 5)

RGB (0–1)0.9569, 0.0353, 0.0196

RGB percentages95.7%, 3.5%, 2%

HSLhsl(1, 96%, 48.8%)

HSV / HSBhsv(1, 98%, 95.7%)

CMYK0%, 96.3%, 98%, 4.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,993,093

CSS custom property--colour: #F40905;

Brightness & contrast

Relative luminance0.19439WCAG 2.x, 0 is black and 1 is white

Perceived brightness133.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.89:1

Contrast with white4.3:1WCAG normal text: Fail

Contrast with black4.89:1WCAG normal text: AA

Greyscale equivalent#3B3B3B

Inverted#0BF6FA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#695C00no red cones; affects about 1% of men; ΔE 83.4 from the original

Deuteranopia#9C8A00no green cones; the most common form, about 1% of men; ΔE 82.4 from the original

Tritanopia#FF0013no blue cones; rare, and affects men and women equally; ΔE 4.3 from the original

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

Contrast with white, large text4.3:1WCAG large text: AA

Contrast with black, large text4.89:1WCAG large text: AAA

Named colours

Red · ΔE 5.2 Orange red · ΔE 12.2 Tomato · ΔE 28 Crimson · ΔE 31 Firebrick · ΔE 35.6 Coral · ΔE 38.9

Nearest named CSS colourRed (#FF0000)ΔE 5.15, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#05F0F4

Analogous#F40579, #F48005

Triadic#05F409, #0905F4

Split complementary#05F480, #0579F4

Tetradic#79F405, #05F0F4, #8005F4

Tints, shades & saturation

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

Lighter +40%#FEC8C7

Lighter +30%#FD9795

Lighter +20%#FC6663

Lighter +10%#FB3531

Darker −10%#C20704

Darker −20%#900503

Darker −30%#5E0302

Darker −40%#2C0201

More saturated +25%#F90400

Less saturated −25%#D52724

Channel breakdown

R244

Red244 (95.7%)

Green9 (3.5%)

Blue5 (2%)

Hue1°

Saturation (HSL)95.98%

Lightness48.82%

Dominant channelRed

Hex per channelR F4 · G 09 · B 05

Keep nerding

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

#F40905

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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