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Recognised as Colour

#2B183D

  • #2B183D
  • Violet
  • Dark
  • Nearest: Dark slateblue

#2B183D is a violet with RGB values 43, 24, 61 and HSL 271°, 44%, 17%. It is a dark colour, so white text on it reaches 16.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B183D#2B183D
HEX#2B183D
RGBrgb(43, 24, 61)
RGB (0–1)0.1686, 0.0941, 0.2392
RGB percentages16.9%, 9.4%, 23.9%
HSLhsl(270.8, 43.5%, 16.7%)
HSV / HSBhsv(270.8, 60.7%, 23.9%)
CMYK29.5%, 60.7%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,824,253
CSS custom property--colour: #2B183D;

Brightness & contrast

Relative luminance0.01504WCAG 2.x, 0 is black and 1 is white
Perceived brightness36.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.14:1
Contrast with white16.14:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#D4E7C2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0C203Eno red cones; affects about 1% of men; ΔE 14.1 from the original
Deuteranopia#12213Cno green cones; the most common form, about 1% of men; ΔE 14.4 from the original
Tritanopia#281F27no blue cones; rare, and affects men and women equally; ΔE 20.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.14:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 29.5Black · ΔE 30.1Midnight blue · ΔE 32.4Dark slate grey · ΔE 39Rebecca purple · ΔE 41.7Dim grey · ΔE 41.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 29.46, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2A3D18
Analogous#19183D, #3D183C
Triadic#3D2B18, #183D2B
Split complementary#3D3D18, #183D19
Tetradic#3D1918, #2A3D18, #183C3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9260C1
Lighter +30%#7843AB
Lighter +20%#5F3586
Lighter +10%#452662
Darker −10%#110A18
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2B0D48
Less saturated −25%#2B2332

Channel breakdown

R43
G24
B61
Red43 (16.9%)
Green24 (9.4%)
Blue61 (23.9%)
Hue270.81°
Saturation (HSL)43.53%
Lightness16.67%
Dominant channelBlue
Hex per channelR 2B · G 18 · B 3D

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Every value on this page was computed from “2b183d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.