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Recognised as Colour

#2B2B65

  • #2B2B65
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2B2B65 is a blue with RGB values 43, 43, 101 and HSL 240°, 40%, 28%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2B2B65#2B2B65
HEX#2B2B65
RGBrgb(43, 43, 101)
RGB (0–1)0.1686, 0.1686, 0.3961
RGB percentages16.9%, 16.9%, 39.6%
HSLhsl(240, 40.3%, 28.2%)
HSV / HSBhsv(240, 57.4%, 39.6%)
CMYK57.4%, 57.4%, 0%, 60.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,829,157
CSS custom property--colour: #2B2B65;

Brightness & contrast

Relative luminance0.03181WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.83:1
Contrast with white12.83:1WCAG normal text: AAA
Contrast with black1.64:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#D4D49A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#083467no red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#003064no green cones; the most common form, about 1% of men; ΔE 10.4 from the original
Tritanopia#103843no blue cones; rare, and affects men and women equally; ΔE 36.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.83:1WCAG large text: AAA
Contrast with black, large text1.64:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.8Midnight blue · ΔE 20.8Rebecca purple · ΔE 30.1Slate blue · ΔE 38.2Indigo · ΔE 38.2Steel blue · ΔE 39
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#65652B
Analogous#2B4865, #482B65
Triadic#652B2B, #2B652B
Split complementary#65482B, #48652B
Tetradic#652B48, #65652B, #2B6548

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8D8DCF
Lighter +30%#6A6ABF
Lighter +20%#4949AD
Lighter +10%#3A3A89
Darker −10%#1C1C41
Darker −20%#0D0D1D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#191977
Less saturated −25%#3D3D53

Channel breakdown

R43
G43
B101
Red43 (16.9%)
Green43 (16.9%)
Blue101 (39.6%)
Hue240°
Saturation (HSL)40.28%
Lightness28.24%
Dominant channelBlue
Hex per channelR 2B · G 2B · B 65

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Every value on this page was computed from “2b2b65” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.