Recognised as Colour

#F91B0B

#F91B0B
Red
Dark
Nearest: Red

#F91B0B is a red with RGB values 249, 27, 11 and HSL 4°, 95%, 51%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F91B0B#F91B0B

HEX#F91B0B

RGBrgb(249, 27, 11)

RGB (0–1)0.9765, 0.1059, 0.0431

RGB percentages97.6%, 10.6%, 4.3%

HSLhsl(4, 95.2%, 51%)

HSV / HSBhsv(4, 95.6%, 97.6%)

CMYK0%, 89.2%, 95.6%, 2.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,325,387

CSS custom property--colour: #F91B0B;

Brightness & contrast

Relative luminance0.20948WCAG 2.x, 0 is black and 1 is white

Perceived brightness137.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.19:1

Contrast with white4.05:1WCAG normal text: Fail

Contrast with black5.19:1WCAG normal text: AA

Greyscale equivalent#494949

Inverted#06E4F4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E6000no red cones; affects about 1% of men; ΔE 82.3 from the original

Deuteranopia#A18F00no green cones; the most common form, about 1% of men; ΔE 82.2 from the original

Tritanopia#FF001Eno blue cones; rare, and affects men and women equally; ΔE 7 from the original

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

Contrast with white, large text4.05:1WCAG large text: AA

Contrast with black, large text5.19:1WCAG large text: AAA

Named colours

Red · ΔE 5.3 Orange red · ΔE 11 Tomato · ΔE 26.9 Crimson · ΔE 31.1 Firebrick · ΔE 35.8 Coral · ΔE 37.7

Nearest named CSS colourRed (#FF0000)ΔE 5.25, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0BE9F9

Analogous#F90B72, #F9920B

Triadic#0BF91B, #1B0BF9

Split complementary#0BF992, #0B72F9

Tetradic#72F90B, #0BE9F9, #920BF9

Tints, shades & saturation

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

Lighter +40%#FED5D2

Lighter +30%#FDA7A0

Lighter +20%#FB786F

Lighter +10%#FA4A3D

Darker −10%#CC1205

Darker −20%#9A0E04

Darker −30%#680903

Darker −40%#370501

More saturated +25%#FF1605

Less saturated −25%#DA362A

Channel breakdown

R249

G27

B11

Red249 (97.6%)

Green27 (10.6%)

Blue11 (4.3%)

Hue4.03°

Saturation (HSL)95.2%

Lightness50.98%

Dominant channelRed

Hex per channelR F9 · G 1B · B 0B

Keep nerding

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

#F91B0B

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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