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Recognised as Colour

#1D539C

  • #1D539C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1D539C is a blue with RGB values 29, 83, 156 and HSL 214°, 69%, 36%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1D539C#1D539C
HEX#1D539C
RGBrgb(29, 83, 156)
RGB (0–1)0.1137, 0.3255, 0.6118
RGB percentages11.4%, 32.5%, 61.2%
HSLhsl(214.5, 68.6%, 36.3%)
HSV / HSBhsv(214.5, 81.4%, 61.2%)
CMYK81.4%, 46.8%, 0%, 38.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,921,948
CSS custom property--colour: #1D539C;

Brightness & contrast

Relative luminance0.08848WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.58:1
Contrast with white7.58:1WCAG normal text: AAA
Contrast with black2.77:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#E2AC63

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2C5A9Fno red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#0A4F9Bno green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#006470no blue cones; rare, and affects men and women equally; ΔE 43.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.58:1WCAG large text: AAA
Contrast with black, large text2.77:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.9Steel blue · ΔE 25.3Cornflower blue · ΔE 26.6Royal blue · ΔE 28.8Midnight blue · ΔE 29.8Dodgerblue · ΔE 30.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.94, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9C661D
Analogous#1D939C, #261D9C
Triadic#9C1D53, #539C1D
Split complementary#9C271D, #939C1D
Tetradic#9C1D93, #9C661D, #1D9C26

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99BCEC
Lighter +30%#6EA0E4
Lighter +20%#4384DC
Lighter +10%#256AC7
Darker −10%#153C71
Darker −20%#0D2546
Darker −30%#050E1B
Darker −40%#000000
More saturated +25%#0650B3
Less saturated −25%#345685

Channel breakdown

R29
G83
B156
Red29 (11.4%)
Green83 (32.5%)
Blue156 (61.2%)
Hue214.49°
Saturation (HSL)68.65%
Lightness36.27%
Dominant channelBlue
Hex per channelR 1D · G 53 · B 9C

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Every value on this page was computed from “1d539c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.