Colour

#FF191F

#FF191F
Red
Dark
Nearest: Red

#FF191F is a red with RGB values 255, 25, 31 and HSL 358°, 100%, 55%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF191F#FF191F

HEX#FF191F

RGBrgb(255, 25, 31)

RGB (0–1)1, 0.098, 0.1216

RGB percentages100%, 9.8%, 12.2%

HSLhsl(358.4, 100%, 54.9%)

HSV / HSBhsv(358.4, 90.2%, 100%)

CMYK0%, 90.2%, 87.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,718,111

CSS custom property--colour: #FF191F;

Brightness & contrast

Relative luminance0.22054WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.41:1

Contrast with white3.88:1WCAG normal text: Fail

Contrast with black5.41:1WCAG normal text: AA

Greyscale equivalent#4A4A4A

Inverted#00E6E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F631Ano red cones; affects about 1% of men; ΔE 85 from the original

Deuteranopia#A49206no green cones; the most common form, about 1% of men; ΔE 84.5 from the original

Tritanopia#FF0022no blue cones; rare, and affects men and women equally; ΔE 3 from the original

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

Contrast with white, large text3.88:1WCAG large text: AA

Contrast with black, large text5.41:1WCAG large text: AAA

Named colours

Red · ΔE 9.3 Orange red · ΔE 15.4 Tomato · ΔE 24.9 Crimson · ΔE 26.6 Firebrick · ΔE 33.8 Coral · ΔE 37

Nearest named CSS colourRed (#FF0000)ΔE 9.26, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#19FFF9

Analogous#FF1992, #FF8619

Triadic#1FFF19, #191FFF

Split complementary#19FF86, #1992FF

Tetradic#92FF19, #19FFF9, #8619FF

Tints, shades & saturation

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

Lighter +40%#FFE5E6

Lighter +30%#FFB2B4

Lighter +20%#FF7F82

Lighter +10%#FF4C51

Darker −10%#E50006

Darker −20%#B20005

Darker −30%#7F0003

Darker −40%#4C0002

More saturated +25%#FF191F

Less saturated −25%#E2363A

Channel breakdown

R255

G25

B31

Red255 (100%)

Green25 (9.8%)

Blue31 (12.2%)

Hue358.43°

Saturation (HSL)100%

Lightness54.9%

Dominant channelRed

Hex per channelR FF · G 19 · B 1F

Keep nerding

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#FF191F

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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