Recognised as Colour

#310A0A

#310A0A
Red
Dark
Nearest: Black

#310A0A is a red with RGB values 49, 10, 10 and HSL 0°, 66%, 12%. It is a dark colour, so white text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#310A0A#310A0A

HEX#310A0A

RGBrgb(49, 10, 10)

RGB (0–1)0.1922, 0.0392, 0.0392

RGB percentages19.2%, 3.9%, 3.9%

HSLhsl(0, 66.1%, 11.6%)

HSV / HSBhsv(0, 79.6%, 19.2%)

CMYK0%, 79.6%, 79.6%, 80.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,213,834

CSS custom property--colour: #310A0A;

Brightness & contrast

Relative luminance0.00892WCAG 2.x, 0 is black and 1 is white

Perceived brightness28.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.82:1

Contrast with white17.82:1WCAG normal text: AAA

Contrast with black1.18:1WCAG normal text: Fail

Greyscale equivalent#121212

Inverted#CEF5F5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#15120Ano red cones; affects about 1% of men; ΔE 20.5 from the original

Deuteranopia#1E1B09no green cones; the most common form, about 1% of men; ΔE 21.7 from the original

Tritanopia#37030Ano blue cones; rare, and affects men and women equally; ΔE 6.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.82:1WCAG large text: AAA

Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Black · ΔE 22.9 Dark slate grey · ΔE 40.9 Dim grey · ΔE 42.2 Saddle brown · ΔE 44.4 Maroon · ΔE 44.6 Sienna · ΔE 45.9

Nearest named CSS colourBlack (#000000)ΔE 22.91, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0A3131

Analogous#310A1D, #311D0A

Triadic#0A310A, #0A0A31

Split complementary#0A311D, #0A1D31

Tetradic#1D310A, #0A3131, #1D0A31

Tints, shades & saturation

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

Lighter +40%#D53232

Lighter +30%#B02424

Lighter +20%#861B1B

Lighter +10%#5B1313

Darker −10%#070101

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#380303

Less saturated −25%#2A1111

Channel breakdown

R49

G10

B10

Red49 (19.2%)

Green10 (3.9%)

Blue10 (3.9%)

Hue0°

Saturation (HSL)66.1%

Lightness11.57%

Dominant channelRed

Hex per channelR 31 · G 0A · B 0A

Keep nerding

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

#310A0A

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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