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Recognised as Colour

#1C138F

  • #1C138F
  • Blue
  • Dark
  • Nearest: Navy

#1C138F is a blue with RGB values 28, 19, 143 and HSL 244°, 77%, 32%. It is a dark colour, so white text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Navy.

Colour values

#1C138F#1C138F
HEX#1C138F
RGBrgb(28, 19, 143)
RGB (0–1)0.1098, 0.0745, 0.5608
RGB percentages11%, 7.5%, 56.1%
HSLhsl(244.4, 76.5%, 31.8%)
HSV / HSBhsv(244.4, 86.7%, 56.1%)
CMYK80.4%, 86.7%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,840,015
CSS custom property--colour: #1C138F;

Brightness & contrast

Relative luminance0.02696WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.64:1
Contrast with white13.64:1WCAG normal text: AAA
Contrast with black1.54:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#E3EC70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003392no red cones; affects about 1% of men; ΔE 22.1 from the original
Deuteranopia#00278Dno green cones; the most common form, about 1% of men; ΔE 14.7 from the original
Tritanopia#003C54no 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 text13.64:1WCAG large text: AAA
Contrast with black, large text1.54:1WCAG large text: Fail

Named colours

Navy · ΔE 6.2Dark blue · ΔE 7.7Indigo · ΔE 12.9Midnight blue · ΔE 20.4Rebecca purple · ΔE 22.5Slate blue · ΔE 28.9
Nearest named CSS colourNavy (#000080)ΔE 6.17, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#868F13
Analogous#13488F, #5A138F
Triadic#8F1C13, #138F1C
Split complementary#8F5A13, #488F13
Tetradic#8F1348, #868F13, #138F5A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8880EE
Lighter +30%#5E53E8
Lighter +20%#3426E2
Lighter +10%#2519BC
Darker −10%#130D62
Darker −20%#0A0735
Darker −30%#020108
Darker −40%#000000
More saturated +25%#0C00A2
Less saturated −25%#2D277B

Channel breakdown

R28
G19
B143
Red28 (11%)
Green19 (7.5%)
Blue143 (56.1%)
Hue244.35°
Saturation (HSL)76.54%
Lightness31.76%
Dominant channelBlue
Hex per channelR 1C · G 13 · B 8F

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Every value on this page was computed from “1c138f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.