Colour

#1F040B

#1F040B
Red
Dark
Nearest: Black

#1F040B is a red with RGB values 31, 4, 11 and HSL 344°, 77%, 7%. It is a dark colour, so white text on it reaches 19.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F040B#1F040B

HEX#1F040B

RGBrgb(31, 4, 11)

RGB (0–1)0.1216, 0.0157, 0.0431

RGB percentages12.2%, 1.6%, 4.3%

HSLhsl(344.4, 77.1%, 6.9%)

HSV / HSBhsv(344.4, 87.1%, 12.2%)

CMYK0%, 87.1%, 64.5%, 87.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,032,651

CSS custom property--colour: #1F040B;

Brightness & contrast

Relative luminance0.00402WCAG 2.x, 0 is black and 1 is white

Perceived brightness17.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 19.44:1

Contrast with white19.44:1WCAG normal text: AAA

Contrast with black1.08:1WCAG normal text: Fail

Greyscale equivalent#0A0A0A

Inverted#E0FBF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#09090Bno red cones; affects about 1% of men; ΔE 11.7 from the original

Deuteranopia#100F0Ano green cones; the most common form, about 1% of men; ΔE 12.3 from the original

Tritanopia#230206no blue cones; rare, and affects men and women equally; ΔE 3.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text19.44:1WCAG large text: AAA

Contrast with black, large text1.08:1WCAG large text: Fail

Named colours

Black · ΔE 12.3 Dark slate grey · ΔE 36.6 Dim grey · ΔE 42.4 Gray · ΔE 51.3 Slate grey · ΔE 52.4 Dark slateblue · ΔE 53

Nearest named CSS colourBlack (#000000)ΔE 12.34, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#041F18

Analogous#1F0418, #1F0B04

Triadic#0B1F04, #040B1F

Split complementary#041F0B, #04181F

Tetradic#181F04, #041F18, #0B041F

Tints, shades & saturation

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

Lighter +40%#D41B4B

Lighter +30%#A7153B

Lighter +20%#79102B

Lighter +10%#4C0A1B

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#230009

Less saturated −25%#1B080D

Channel breakdown

R31

B11

Red31 (12.2%)

Green4 (1.6%)

Blue11 (4.3%)

Hue344.44°

Saturation (HSL)77.14%

Lightness6.86%

Dominant channelRed

Hex per channelR 1F · G 04 · B 0B

Keep nerding

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

#1F040B

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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