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Recognised as Colour

#1F0913

  • #1F0913
  • Red
  • Dark
  • Nearest: Black

#1F0913 is a red with RGB values 31, 9, 19 and HSL 333°, 55%, 8%. It is a dark colour, so white text on it reaches 19:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F0913#1F0913
HEX#1F0913
RGBrgb(31, 9, 19)
RGB (0–1)0.1216, 0.0353, 0.0745
RGB percentages12.2%, 3.5%, 7.5%
HSLhsl(332.7, 55%, 7.8%)
HSV / HSBhsv(332.7, 71%, 12.2%)
CMYK0%, 71%, 38.7%, 87.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,033,939
CSS custom property--colour: #1F0913;

Brightness & contrast

Relative luminance0.00534WCAG 2.x, 0 is black and 1 is white
Perceived brightness19.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.97:1
Contrast with white18.97:1WCAG normal text: AAA
Contrast with black1.11:1WCAG normal text: Fail
Greyscale equivalent#0E0E0E
Inverted#E0F6EC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0C0E13no red cones; affects about 1% of men; ΔE 11 from the original
Deuteranopia#121212no green cones; the most common form, about 1% of men; ΔE 11.3 from the original
Tritanopia#22080Dno blue cones; rare, and affects men and women equally; ΔE 3.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.97:1WCAG large text: AAA
Contrast with black, large text1.11:1WCAG large text: Fail

Named colours

Black · ΔE 12.3Dark slate grey · ΔE 35.1Dim grey · ΔE 41.2Gray · ΔE 50Dark slateblue · ΔE 50.5Slate grey · ΔE 50.7
Nearest named CSS colourBlack (#000000)ΔE 12.26, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#091F15
Analogous#1F091E, #1F0A09
Triadic#131F09, #09131F
Split complementary#091F0A, #091E1F
Tetradic#1E1F09, #091F15, #0A091F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BD3774
Lighter +30%#962B5C
Lighter +20%#6E2043
Lighter +10%#47142B
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#240413
Less saturated −25%#1A0E13

Channel breakdown

R31
G9
B19
Red31 (12.2%)
Green9 (3.5%)
Blue19 (7.5%)
Hue332.73°
Saturation (HSL)55%
Lightness7.84%
Dominant channelRed
Hex per channelR 1F · G 09 · B 13

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Every value on this page was computed from “1f0913” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.