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Recognised as Colour

#1B44BD

  • #1B44BD
  • Blue
  • Dark
  • Nearest: Slate blue

#1B44BD is a blue with RGB values 27, 68, 189 and HSL 225°, 75%, 42%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#1B44BD#1B44BD
HEX#1B44BD
RGBrgb(27, 68, 189)
RGB (0–1)0.1059, 0.2667, 0.7412
RGB percentages10.6%, 26.7%, 74.1%
HSLhsl(224.8, 75%, 42.4%)
HSV / HSBhsv(224.8, 85.7%, 74.1%)
CMYK85.7%, 64%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,787,069
CSS custom property--colour: #1B44BD;

Brightness & contrast

Relative luminance0.08041WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.05:1
Contrast with white8.05:1WCAG normal text: AAA
Contrast with black2.61:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#E4BB42

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058C1no red cones; affects about 1% of men; ΔE 15.2 from the original
Deuteranopia#0049BBno green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#00647Ano blue cones; rare, and affects men and women equally; ΔE 68.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.05:1WCAG large text: AAA
Contrast with black, large text2.61:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14.9Royal blue · ΔE 15.4Medium slateblue · ΔE 19.9Rebecca purple · ΔE 22.3Midnight blue · ΔE 25.2Navy · ΔE 25.7
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 14.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD941B
Analogous#1B95BD, #431BBD
Triadic#BD1B44, #44BD1B
Split complementary#BD431B, #95BD1B
Tetradic#BD1B95, #BD941B, #1BBD43

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B0C1F4
Lighter +30%#849EED
Lighter +20%#577BE7
Lighter +10%#2A59E1
Darker −10%#153490
Darker −20%#0E2464
Darker −30%#081437
Darker −40%#02040A
More saturated +25%#0037D8
Less saturated −25%#3651A2

Channel breakdown

R27
G68
B189
Red27 (10.6%)
Green68 (26.7%)
Blue189 (74.1%)
Hue224.81°
Saturation (HSL)75%
Lightness42.35%
Dominant channelBlue
Hex per channelR 1B · G 44 · B BD

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Every value on this page was computed from “1b44bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.