Recognised as Colour

#FF0B0B

#FF0B0B
Red
Dark
Nearest: Red

#FF0B0B is a red with RGB values 255, 11, 11 and HSL 0°, 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

#FF0B0B#FF0B0B

HEX#FF0B0B

RGBrgb(255, 11, 11)

RGB (0–1)1, 0.0431, 0.0431

RGB percentages100%, 4.3%, 4.3%

HSLhsl(0, 100%, 52.2%)

HSV / HSBhsv(0, 95.7%, 100%)

CMYK0%, 95.7%, 95.7%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,714,507

CSS custom property--colour: #FF0B0B;

Brightness & contrast

Relative luminance0.21524WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.3:1

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

Contrast with black5.3:1WCAG normal text: AA

Greyscale equivalent#3F3F3F

Inverted#00F4F4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E6000no red cones; affects about 1% of men; ΔE 85.7 from the original

Deuteranopia#A49100no green cones; the most common form, about 1% of men; ΔE 85.1 from the original

Tritanopia#FF0016no blue cones; rare, and affects men and women equally; ΔE 3.6 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 text5.3:1WCAG large text: AAA

Named colours

Red · ΔE 2.7 Orange red · ΔE 13 Tomato · ΔE 29.5 Crimson · ΔE 32.8 Firebrick · ΔE 38.6 Coral · ΔE 40.5

Nearest named CSS colourRed (#FF0000)ΔE 2.65, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0BFFFF

Analogous#FF0B85, #FF850B

Triadic#0BFF0B, #0B0BFF

Split complementary#0BFF85, #0B85FF

Tetradic#85FF0B, #0BFFFF, #850BFF

Tints, shades & saturation

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

Lighter +40%#FFD7D7

Lighter +30%#FFA4A4

Lighter +20%#FF7171

Lighter +10%#FF3E3E

Darker −10%#D70000

Darker −20%#A40000

Darker −30%#710000

Darker −40%#3E0000

More saturated +25%#FF0B0B

Less saturated −25%#E12929

Channel breakdown

R255

G11

B11

Red255 (100%)

Green11 (4.3%)

Blue11 (4.3%)

Hue0°

Saturation (HSL)100%

Lightness52.16%

Dominant channelRed

Hex per channelR FF · G 0B · B 0B

Keep nerding

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

#FF0B0B

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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