Colour

#F8100B

#F8100B
Red
Dark
Nearest: Red

#F8100B is a red with RGB values 248, 16, 11 and HSL 1°, 94%, 51%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F8100B#F8100B

HEX#F8100B

RGBrgb(248, 16, 11)

RGB (0–1)0.9725, 0.0627, 0.0431

RGB percentages97.3%, 6.3%, 4.3%

HSLhsl(1.3, 94.4%, 50.8%)

HSV / HSBhsv(1.3, 95.6%, 97.3%)

CMYK0%, 93.5%, 95.6%, 2.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,257,035

CSS custom property--colour: #F8100B;

Brightness & contrast

Relative luminance0.20351WCAG 2.x, 0 is black and 1 is white

Perceived brightness136.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.07:1

Contrast with white4.14:1WCAG normal text: Fail

Contrast with black5.07:1WCAG normal text: AA

Greyscale equivalent#414141

Inverted#07EFF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B5E00no red cones; affects about 1% of men; ΔE 83.8 from the original

Deuteranopia#9F8D00no green cones; the most common form, about 1% of men; ΔE 83.1 from the original

Tritanopia#FF0018no blue cones; rare, and affects men and women equally; ΔE 4.2 from the original

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

Contrast with white, large text4.14:1WCAG large text: AA

Contrast with black, large text5.07:1WCAG large text: AAA

Named colours

Red · ΔE 5 Orange red · ΔE 12.3 Tomato · ΔE 27.6 Crimson · ΔE 30.7 Firebrick · ΔE 35.8 Coral · ΔE 38.7

Nearest named CSS colourRed (#FF0000)ΔE 4.97, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0BF3F8

Analogous#F80B7D, #F8860B

Triadic#0BF810, #100BF8

Split complementary#0BF886, #0B7DF8

Tetradic#7DF80B, #0BF3F8, #860BF8

Tints, shades & saturation

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

Lighter +40%#FED2D1

Lighter +30%#FCA2A0

Lighter +20%#FB716E

Lighter +10%#F9413D

Darker −10%#CA0A06

Darker −20%#990804

Darker −30%#670503

Darker −40%#350302

More saturated +25%#FF0904

Less saturated −25%#D92E2A

Channel breakdown

R248

G16

B11

Red248 (97.3%)

Green16 (6.3%)

Blue11 (4.3%)

Hue1.27°

Saturation (HSL)94.42%

Lightness50.78%

Dominant channelRed

Hex per channelR F8 · G 10 · B 0B

Keep nerding

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

#F8100B

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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