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Recognised as Colour

#1D4DBC

  • #1D4DBC
  • Blue
  • Dark
  • Nearest: Royal blue

#1D4DBC is a blue with RGB values 29, 77, 188 and HSL 222°, 73%, 43%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#1D4DBC#1D4DBC
HEX#1D4DBC
RGBrgb(29, 77, 188)
RGB (0–1)0.1137, 0.302, 0.7373
RGB percentages11.4%, 30.2%, 73.7%
HSLhsl(221.9, 73.3%, 42.5%)
HSV / HSBhsv(221.9, 84.6%, 73.7%)
CMYK84.6%, 59%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,920,444
CSS custom property--colour: #1D4DBC;

Brightness & contrast

Relative luminance0.092WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.39:1
Contrast with white7.39:1WCAG normal text: AAA
Contrast with black2.84:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#E2B243

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005DC0no red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#004FBAno green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#00697Dno blue cones; rare, and affects men and women equally; ΔE 63.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.39:1WCAG large text: AAA
Contrast with black, large text2.84:1WCAG large text: Fail

Named colours

Royal blue · ΔE 11.8Slate blue · ΔE 13.8Dark slateblue · ΔE 21.3Medium slateblue · ΔE 21.5Rebecca purple · ΔE 22.7Medium purple · ΔE 24.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC8C1D
Analogous#1D9DBC, #3C1DBC
Triadic#BC1D4D, #4DBC1D
Split complementary#BC3D1D, #9CBC1D
Tetradic#BC1D9D, #BC8C1D, #1DBC3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2C6F3
Lighter +30%#86A5EC
Lighter +20%#5A84E5
Lighter +10%#2D63DF
Darker −10%#163B90
Darker −20%#0F2964
Darker −30%#091737
Darker −40%#02050B
More saturated +25%#0242D7
Less saturated −25%#3858A1

Channel breakdown

R29
G77
B188
Red29 (11.4%)
Green77 (30.2%)
Blue188 (73.7%)
Hue221.89°
Saturation (HSL)73.27%
Lightness42.55%
Dominant channelBlue
Hex per channelR 1D · G 4D · B BC

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Every value on this page was computed from “1d4dbc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.