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Colour

#1B001F

  • #1B001F
  • Magenta
  • Dark
  • Nearest: Black

#1B001F is a magenta with RGB values 27, 0, 31 and HSL 292°, 100%, 6%. It is a dark colour, so white text on it reaches 19.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1B001F#1B001F
HEX#1B001F
RGBrgb(27, 0, 31)
RGB (0–1)0.1059, 0, 0.1216
RGB percentages10.6%, 0%, 12.2%
HSLhsl(292.3, 100%, 6.1%)
HSV / HSBhsv(292.3, 100%, 12.2%)
CMYK12.9%, 100%, 0%, 87.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,769,503
CSS custom property--colour: #1B001F;

Brightness & contrast

Relative luminance0.00332WCAG 2.x, 0 is black and 1 is white
Perceived brightness18.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.69:1
Contrast with white19.69:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#080808
Inverted#E4FFE0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000920no red cones; affects about 1% of men; ΔE 12.8 from the original
Deuteranopia#030C1Eno green cones; the most common form, about 1% of men; ΔE 13.9 from the original
Tritanopia#1C040Eno blue cones; rare, and affects men and women equally; ΔE 13.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.69:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Black · ΔE 20.8Dark slate grey · ΔE 40.5Dark slateblue · ΔE 41.4Midnight blue · ΔE 41.7Dim grey · ΔE 46.2Rebecca purple · ΔE 52.8
Nearest named CSS colourBlack (#000000)ΔE 20.76, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#041F00
Analogous#0C001F, #1F0013
Triadic#1F1B00, #001F1B
Split complementary#141F00, #001F0B
Tetradic#1F0B00, #041F00, #00141F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CD00EB
Lighter +30%#A000B8
Lighter +20%#740085
Lighter +10%#470052
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1B001F
Less saturated −25%#18041B

Channel breakdown

R27
G0
B31
Red27 (10.6%)
Green0 (0%)
Blue31 (12.2%)
Hue292.26°
Saturation (HSL)100%
Lightness6.08%
Dominant channelBlue
Hex per channelR 1B · G 00 · B 1F

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Every value on this page was computed from “1b001f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.