Colour

#FF091B

#FF091B
Red
Dark
Nearest: Red

#FF091B is a red with RGB values 255, 9, 27 and HSL 356°, 100%, 52%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF091B#FF091B

HEX#FF091B

RGBrgb(255, 9, 27)

RGB (0–1)1, 0.0353, 0.1059

RGB percentages100%, 3.5%, 10.6%

HSLhsl(355.6, 100%, 51.8%)

HSV / HSBhsv(355.6, 96.5%, 100%)

CMYK0%, 96.5%, 89.4%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,714,011

CSS custom property--colour: #FF091B;

Brightness & contrast

Relative luminance0.21535WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.31:1

Contrast with white3.96:1WCAG normal text: Fail

Contrast with black5.31:1WCAG normal text: AA

Greyscale equivalent#3F3F3F

Inverted#00F6E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6015no red cones; affects about 1% of men; ΔE 86 from the original

Deuteranopia#A39100no green cones; the most common form, about 1% of men; ΔE 86 from the original

Tritanopia#FF0019no blue cones; rare, and affects men and women equally; ΔE 0.9 from the original

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

Contrast with white, large text3.96:1WCAG large text: AA

Contrast with black, large text5.31:1WCAG large text: AAA

Named colours

Red · ΔE 7.8 Orange red · ΔE 15.8 Tomato · ΔE 26.9 Crimson · ΔE 28.1 Firebrick · ΔE 35.3 Coral · ΔE 38.9

Nearest named CSS colourRed (#FF0000)ΔE 7.78, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#09FFED

Analogous#FF0996, #FF7209

Triadic#1BFF09, #091BFF

Split complementary#09FF72, #0996FF

Tetradic#96FF09, #09FFED, #7209FF

Tints, shades & saturation

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

Lighter +40%#FFD5D8

Lighter +30%#FFA2A9

Lighter +20%#FF6F7A

Lighter +10%#FF3C4A

Darker −10%#D50010

Darker −20%#A2000C

Darker −30%#6F0008

Darker −40%#3C0004

More saturated +25%#FF091B

Less saturated −25%#E02835

Channel breakdown

R255

B27

Red255 (100%)

Green9 (3.5%)

Blue27 (10.6%)

Hue355.61°

Saturation (HSL)100%

Lightness51.76%

Dominant channelRed

Hex per channelR FF · G 09 · B 1B

Keep nerding

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#FF091B

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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