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Recognised as Colour

#1B52CD

  • #1B52CD
  • Blue
  • Dark
  • Nearest: Royal blue

#1B52CD is a blue with RGB values 27, 82, 205 and HSL 221°, 77%, 45%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1B52CD#1B52CD
HEX#1B52CD
RGBrgb(27, 82, 205)
RGB (0–1)0.1059, 0.3216, 0.8039
RGB percentages10.6%, 32.2%, 80.4%
HSLhsl(221.5, 76.7%, 45.5%)
HSV / HSBhsv(221.5, 86.8%, 80.4%)
CMYK86.8%, 60%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,790,669
CSS custom property--colour: #1B52CD;

Brightness & contrast

Relative luminance0.10675WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.7:1
Contrast with white6.7:1WCAG normal text: AA
Contrast with black3.14:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#E4AD32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0064D1no red cones; affects about 1% of men; ΔE 13.5 from the original
Deuteranopia#0054CBno green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#007287no blue cones; rare, and affects men and women equally; ΔE 69.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.7:1WCAG large text: AAA
Contrast with black, large text3.14:1WCAG large text: AA

Named colours

Royal blue · ΔE 10Slate blue · ΔE 13.7Medium slateblue · ΔE 17.5Medium purple · ΔE 25.1Rebecca purple · ΔE 25.5Dark slateblue · ΔE 27.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.97, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CD961B
Analogous#1BABCD, #3D1BCD
Triadic#CD1B52, #52CD1B
Split complementary#CD3D1B, #ABCD1B
Tetradic#CD1BAB, #CD961B, #1BCD3D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BECFF6
Lighter +30%#91AEF0
Lighter +20%#638DEB
Lighter +10%#366CE5
Darker −10%#1540A0
Darker −20%#0F2E73
Darker −30%#091C46
Darker −40%#030A19
More saturated +25%#0048E8
Less saturated −25%#385DB0

Channel breakdown

R27
G82
B205
Red27 (10.6%)
Green82 (32.2%)
Blue205 (80.4%)
Hue221.46°
Saturation (HSL)76.72%
Lightness45.49%
Dominant channelBlue
Hex per channelR 1B · G 52 · B CD

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Every value on this page was computed from “1b52cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.