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Recognised as Colour

#1D4DAE

  • #1D4DAE
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1D4DAE is a blue with RGB values 29, 77, 174 and HSL 220°, 71%, 40%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1D4DAE#1D4DAE
HEX#1D4DAE
RGBrgb(29, 77, 174)
RGB (0–1)0.1137, 0.302, 0.6824
RGB percentages11.4%, 30.2%, 68.2%
HSLhsl(220.1, 71.4%, 39.8%)
HSV / HSBhsv(220.1, 83.3%, 68.2%)
CMYK83.3%, 55.7%, 0%, 31.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,920,430
CSS custom property--colour: #1D4DAE;

Brightness & contrast

Relative luminance0.08625WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.71:1
Contrast with white7.71:1WCAG normal text: AAA
Contrast with black2.72:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#E2B251

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005AB1no red cones; affects about 1% of men; ΔE 10.4 from the original
Deuteranopia#004DACno green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#006576no blue cones; rare, and affects men and women equally; ΔE 56.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.71:1WCAG large text: AAA
Contrast with black, large text2.72:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.6Royal blue · ΔE 16.3Slate blue · ΔE 18Midnight blue · ΔE 23Rebecca purple · ΔE 23.6Medium purple · ΔE 25.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.57, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AE7E1D
Analogous#1D95AE, #361DAE
Triadic#AE1D4D, #4DAE1D
Split complementary#AE361D, #95AE1D
Tetradic#AE1D95, #AE7E1D, #1DAE36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7BFF0
Lighter +30%#7B9FE9
Lighter +20%#4F80E2
Lighter +10%#2460DA
Darker −10%#163A82
Darker −20%#0E2657
Darker −30%#07132B
Darker −40%#000000
More saturated +25%#0444C7
Less saturated −25%#365695

Channel breakdown

R29
G77
B174
Red29 (11.4%)
Green77 (30.2%)
Blue174 (68.2%)
Hue220.14°
Saturation (HSL)71.43%
Lightness39.8%
Dominant channelBlue
Hex per channelR 1D · G 4D · B AE

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Every value on this page was computed from “1d4dae” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.