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Recognised as Colour

#17131B

  • #17131B
  • Violet
  • Dark
  • Nearest: Black

#17131B is a violet with RGB values 23, 19, 27 and HSL 270°, 17%, 9%. It is a dark colour, so white text on it reaches 18.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#17131B#17131B
HEX#17131B
RGBrgb(23, 19, 27)
RGB (0–1)0.0902, 0.0745, 0.1059
RGB percentages9%, 7.5%, 10.6%
HSLhsl(270, 17.4%, 9%)
HSV / HSBhsv(270, 29.6%, 10.6%)
CMYK14.8%, 29.6%, 0%, 89.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,512,219
CSS custom property--colour: #17131B;

Brightness & contrast

Relative luminance0.00727WCAG 2.x, 0 is black and 1 is white
Perceived brightness21.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.33:1
Contrast with white18.33:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#E8ECE4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#12141Bno red cones; affects about 1% of men; ΔE 2.8 from the original
Deuteranopia#12151Bno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#171416no blue cones; rare, and affects men and women equally; ΔE 4.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.33:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Black · ΔE 9Dark slate grey · ΔE 29.2Dim grey · ΔE 38.3Slate grey · ΔE 47Gray · ΔE 47.4Dark slateblue · ΔE 49.7
Nearest named CSS colourBlack (#000000)ΔE 8.98, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#171B13
Analogous#13131B, #1B131B
Triadic#1B1713, #131B17
Split complementary#1B1B13, #131B13
Tetradic#1B1313, #171B13, #131B1B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7D6793
Lighter +30%#635275
Lighter +20%#4A3D57
Lighter +10%#312839
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#170D21
Less saturated −25%#171717

Channel breakdown

R23
G19
B27
Red23 (9%)
Green19 (7.5%)
Blue27 (10.6%)
Hue270°
Saturation (HSL)17.39%
Lightness9.02%
Dominant channelBlue
Hex per channelR 17 · G 13 · B 1B

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Every value on this page was computed from “17131b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.