Recognised as Colour

#310D18

#310D18
Red
Dark
Nearest: Black

#310D18 is a red with RGB values 49, 13, 24 and HSL 342°, 58%, 12%. It is a dark colour, so white text on it reaches 17.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#310D18#310D18

HEX#310D18

RGBrgb(49, 13, 24)

RGB (0–1)0.1922, 0.051, 0.0941

RGB percentages19.2%, 5.1%, 9.4%

HSLhsl(341.7, 58.1%, 12.2%)

HSV / HSBhsv(341.7, 73.5%, 19.2%)

CMYK0%, 73.5%, 51%, 80.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,214,616

CSS custom property--colour: #310D18;

Brightness & contrast

Relative luminance0.01007WCAG 2.x, 0 is black and 1 is white

Perceived brightness29.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.48:1

Contrast with white17.48:1WCAG normal text: AAA

Contrast with black1.2:1WCAG normal text: Fail

Greyscale equivalent#151515

Inverted#CEF2E7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#141518no red cones; affects about 1% of men; ΔE 19.7 from the original

Deuteranopia#1E1C17no green cones; the most common form, about 1% of men; ΔE 19.9 from the original

Tritanopia#360911no blue cones; rare, and affects men and women equally; ΔE 6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.48:1WCAG large text: AAA

Contrast with black, large text1.2:1WCAG large text: Fail

Named colours

Black · ΔE 21.6 Dark slate grey · ΔE 38.7 Dim grey · ΔE 40.4 Gray · ΔE 48.7 Saddle brown · ΔE 49 Maroon · ΔE 49.1

Nearest named CSS colourBlack (#000000)ΔE 21.58, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0D3126

Analogous#310D2A, #31140D

Triadic#18310D, #0D1831

Split complementary#0D3114, #0D2A31

Tetradic#2A310D, #0D3126, #140D31

Tints, shades & saturation

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

Lighter +40%#CC3E69

Lighter +30%#AA2D53

Lighter +20%#82223F

Lighter +10%#59182C

Darker −10%#090204

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#390515

Less saturated −25%#29151B

Channel breakdown

R49

G13

B24

Red49 (19.2%)

Green13 (5.1%)

Blue24 (9.4%)

Hue341.67°

Saturation (HSL)58.06%

Lightness12.16%

Dominant channelRed

Hex per channelR 31 · G 0D · B 18

Keep nerding

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

#310D18

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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