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Recognised as Colour

#391BDB

  • #391BDB
  • Blue
  • Dark
  • Nearest: Medium blue

#391BDB is a blue with RGB values 57, 27, 219 and HSL 249°, 78%, 48%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#391BDB#391BDB
HEX#391BDB
RGBrgb(57, 27, 219)
RGB (0–1)0.2235, 0.1059, 0.8588
RGB percentages22.4%, 10.6%, 85.9%
HSLhsl(249.4, 78%, 48.2%)
HSV / HSBhsv(249.4, 87.7%, 85.9%)
CMYK74%, 87.7%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,742,683
CSS custom property--colour: #391BDB;

Brightness & contrast

Relative luminance0.06768WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.92:1
Contrast with white8.92:1WCAG normal text: AAA
Contrast with black2.35:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#C6E424

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0052E0no red cones; affects about 1% of men; ΔE 33 from the original
Deuteranopia#0041D8no green cones; the most common form, about 1% of men; ΔE 23.7 from the original
Tritanopia#005E82no blue cones; rare, and affects men and women equally; ΔE 97.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.92:1WCAG large text: AAA
Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Medium blue · ΔE 6.9Blue violet · ΔE 18.5Dark violet · ΔE 23.1Blue · ΔE 23.2Dark blue · ΔE 30.3Dark orchid · ΔE 31.4
Nearest named CSS colourMedium blue (#0000CD)ΔE 6.93, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BDDB1B
Analogous#1B5DDB, #991BDB
Triadic#DB391B, #1BDB39
Split complementary#DB991B, #5DDB1B
Tetradic#DB1B5D, #BDDB1B, #1BDB99

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D1CAF8
Lighter +30%#AA9CF3
Lighter +20%#836FED
Lighter +10%#5B41E8
Darker −10%#2D15AE
Darker −20%#211080
Darker −30%#160A53
Darker −40%#0A0525
More saturated +25%#2600F6
Less saturated −25%#4E3ABC

Channel breakdown

R57
G27
B219
Red57 (22.4%)
Green27 (10.6%)
Blue219 (85.9%)
Hue249.38°
Saturation (HSL)78.05%
Lightness48.24%
Dominant channelBlue
Hex per channelR 39 · G 1B · B DB

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Every value on this page was computed from “391bdb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.