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Recognised as Colour

#1D5CDB

  • #1D5CDB
  • Blue
  • Dark
  • Nearest: Royal blue

#1D5CDB is a blue with RGB values 29, 92, 219 and HSL 220°, 77%, 49%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1D5CDB#1D5CDB
HEX#1D5CDB
RGBrgb(29, 92, 219)
RGB (0–1)0.1137, 0.3608, 0.8588
RGB percentages11.4%, 36.1%, 85.9%
HSLhsl(220.1, 76.6%, 48.6%)
HSV / HSBhsv(220.1, 86.8%, 85.9%)
CMYK86.8%, 58%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,924,315
CSS custom property--colour: #1D5CDB;

Brightness & contrast

Relative luminance0.1303WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.82:1
Contrast with white5.82:1WCAG normal text: AA
Contrast with black3.61:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#E2A324

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006EDFno red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#005DD9no green cones; the most common form, about 1% of men; ΔE 2.6 from the original
Tritanopia#007C92no blue cones; rare, and affects men and women equally; ΔE 70.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.82:1WCAG large text: AAA
Contrast with black, large text3.61:1WCAG large text: AA

Named colours

Royal blue · ΔE 7.4Slate blue · ΔE 14.5Medium slateblue · ΔE 16.1Medium purple · ΔE 24.7Dodgerblue · ΔE 26Rebecca purple · ΔE 28.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.44, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DB9C1D
Analogous#1DBBDB, #3D1DDB
Triadic#DB1D5C, #5CDB1D
Split complementary#DB3D1D, #BBDB1D
Tetradic#DB1DBB, #DB9C1D, #1DDB3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCDBF8
Lighter +30%#9FBAF2
Lighter +20%#729AEC
Lighter +10%#457AE6
Darker −10%#1749AE
Darker −20%#113681
Darker −30%#0B2354
Darker −40%#051027
More saturated +25%#0052F8
Less saturated −25%#3C66BC

Channel breakdown

R29
G92
B219
Red29 (11.4%)
Green92 (36.1%)
Blue219 (85.9%)
Hue220.11°
Saturation (HSL)76.61%
Lightness48.63%
Dominant channelBlue
Hex per channelR 1D · G 5C · B DB

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Every value on this page was computed from “1d5cdb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.