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Recognised as Colour

#1F080B

  • #1F080B
  • Red
  • Dark
  • Nearest: Black

#1F080B is a red with RGB values 31, 8, 11 and HSL 352°, 59%, 8%. It is a dark colour, so white text on it reaches 19.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F080B#1F080B
HEX#1F080B
RGBrgb(31, 8, 11)
RGB (0–1)0.1216, 0.0314, 0.0431
RGB percentages12.2%, 3.1%, 4.3%
HSLhsl(352.2, 59%, 7.6%)
HSV / HSBhsv(352.2, 74.2%, 12.2%)
CMYK0%, 74.2%, 64.5%, 87.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,033,675
CSS custom property--colour: #1F080B;

Brightness & contrast

Relative luminance0.00489WCAG 2.x, 0 is black and 1 is white
Perceived brightness18.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.13:1
Contrast with white19.13:1WCAG normal text: AAA
Contrast with black1.1:1WCAG normal text: Fail
Greyscale equivalent#0D0D0D
Inverted#E0F7F4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0D0C0Bno red cones; affects about 1% of men; ΔE 10.2 from the original
Deuteranopia#13110Ano green cones; the most common form, about 1% of men; ΔE 10.6 from the original
Tritanopia#230609no blue cones; rare, and affects men and women equally; ΔE 3.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.13:1WCAG large text: AAA
Contrast with black, large text1.1:1WCAG large text: Fail

Named colours

Black · ΔE 11.3Dark slate grey · ΔE 35.1Dim grey · ΔE 41.3Gray · ΔE 50.3Slate grey · ΔE 51.6Saddle brown · ΔE 53.4
Nearest named CSS colourBlack (#000000)ΔE 11.29, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#081F1C
Analogous#1F0817, #1F1008
Triadic#0B1F08, #080B1F
Split complementary#081F10, #08171F
Tetradic#171F08, #081F1C, #10081F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C13245
Lighter +30%#992736
Lighter +20%#701D28
Lighter +10%#481219
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#240307
Less saturated −25%#1A0D0F

Channel breakdown

R31
G8
B11
Red31 (12.2%)
Green8 (3.1%)
Blue11 (4.3%)
Hue352.17°
Saturation (HSL)58.97%
Lightness7.65%
Dominant channelRed
Hex per channelR 1F · G 08 · B 0B

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Every value on this page was computed from “1f080b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.