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Recognised as Colour

#2B47CB

  • #2B47CB
  • Blue
  • Dark
  • Nearest: Slate blue

#2B47CB is a blue with RGB values 43, 71, 203 and HSL 230°, 65%, 48%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#2B47CB#2B47CB
HEX#2B47CB
RGBrgb(43, 71, 203)
RGB (0–1)0.1686, 0.2784, 0.7961
RGB percentages16.9%, 27.8%, 79.6%
HSLhsl(229.5, 65%, 48.2%)
HSV / HSBhsv(229.5, 78.8%, 79.6%)
CMYK78.8%, 65%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,836,427
CSS custom property--colour: #2B47CB;

Brightness & contrast

Relative luminance0.09332WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.33:1
Contrast with white7.33:1WCAG normal text: AAA
Contrast with black2.87:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#D4B834

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005ECFno red cones; affects about 1% of men; ΔE 17.9 from the original
Deuteranopia#004FC9no green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#006A83no blue cones; rare, and affects men and women equally; ΔE 73.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.33:1WCAG large text: AAA
Contrast with black, large text2.87:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15.9Royal blue · ΔE 16.8Medium slateblue · ΔE 16.9Rebecca purple · ΔE 24.7Dark blue · ΔE 25.5Navy · ΔE 26.5
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CBAF2B
Analogous#2B97CB, #5F2BCB
Triadic#CB2B47, #47CB2B
Split complementary#CB5F2B, #97CB2B
Tetradic#CB2B97, #CBAF2B, #2BCB5F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDD4F5
Lighter +30%#A3B0EC
Lighter +20%#798CE3
Lighter +10%#4F67DA
Darker −10%#2238A1
Darker −20%#192A77
Darker −30%#101B4D
Darker −40%#070C23
More saturated +25%#0C33EA
Less saturated −25%#4A5BAC

Channel breakdown

R43
G71
B203
Red43 (16.9%)
Green71 (27.8%)
Blue203 (79.6%)
Hue229.5°
Saturation (HSL)65.04%
Lightness48.24%
Dominant channelBlue
Hex per channelR 2B · G 47 · B CB

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Every value on this page was computed from “2b47cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.