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Recognised as Colour

#1F1387

  • #1F1387
  • Blue
  • Dark
  • Nearest: Navy

#1F1387 is a blue with RGB values 31, 19, 135 and HSL 246°, 75%, 30%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Navy.

Colour values

#1F1387#1F1387
HEX#1F1387
RGBrgb(31, 19, 135)
RGB (0–1)0.1216, 0.0745, 0.5294
RGB percentages12.2%, 7.5%, 52.9%
HSLhsl(246.2, 75.3%, 30.2%)
HSV / HSBhsv(246.2, 85.9%, 52.9%)
CMYK77%, 85.9%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,036,615
CSS custom property--colour: #1F1387;

Brightness & contrast

Relative luminance0.02506WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.99:1
Contrast with white13.99:1WCAG normal text: AAA
Contrast with black1.5:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#E0EC78

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00318Ano red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#002685no green cones; the most common form, about 1% of men; ΔE 14.6 from the original
Tritanopia#00394Fno blue cones; rare, and affects men and women equally; ΔE 66.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.99:1WCAG large text: AAA
Contrast with black, large text1.5:1WCAG large text: Fail

Named colours

Navy · ΔE 7.7Dark blue · ΔE 11.2Indigo · ΔE 11.7Midnight blue · ΔE 16.2Rebecca purple · ΔE 20.3Dark slateblue · ΔE 28.4
Nearest named CSS colourNavy (#000080)ΔE 7.68, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7B8713
Analogous#134187, #591387
Triadic#871F13, #13871F
Split complementary#875913, #418713
Tetradic#871341, #7B8713, #138759

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#867AEC
Lighter +30%#5D4DE6
Lighter +20%#3420E0
Lighter +10%#2919B4
Darker −10%#150D5A
Darker −20%#0A062E
Darker −30%#000001
Darker −40%#000000
More saturated +25%#10009A
Less saturated −25%#2E2674

Channel breakdown

R31
G19
B135
Red31 (12.2%)
Green19 (7.5%)
Blue135 (52.9%)
Hue246.21°
Saturation (HSL)75.32%
Lightness30.2%
Dominant channelBlue
Hex per channelR 1F · G 13 · B 87

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Every value on this page was computed from “1f1387” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.