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Colour

#1C3992

  • #1C3992
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1C3992 is a blue with RGB values 28, 57, 146 and HSL 225°, 68%, 34%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1C3992#1C3992
HEX#1C3992
RGBrgb(28, 57, 146)
RGB (0–1)0.1098, 0.2235, 0.5725
RGB percentages11%, 22.4%, 57.3%
HSLhsl(225.3, 67.8%, 34.1%)
HSV / HSBhsv(225.3, 80.8%, 57.3%)
CMYK80.8%, 61%, 0%, 42.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,849,746
CSS custom property--colour: #1C3992;

Brightness & contrast

Relative luminance0.05248WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.25:1
Contrast with white10.25:1WCAG normal text: AAA
Contrast with black2.05:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#E3C66D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004695no red cones; affects about 1% of men; ΔE 10.8 from the original
Deuteranopia#003B90no green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#00505Fno blue cones; rare, and affects men and women equally; ΔE 53.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.25:1WCAG large text: AAA
Contrast with black, large text2.05:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10.8Midnight blue · ΔE 14.3Rebecca purple · ΔE 20.6Slate blue · ΔE 22.5Royal blue · ΔE 24.4Indigo · ΔE 28.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#92751C
Analogous#1C7492, #3A1C92
Triadic#921C39, #39921C
Split complementary#923A1C, #74921C
Tetradic#921C74, #92751C, #1C923A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90A6EA
Lighter +30%#6584E2
Lighter +20%#3B62D9
Lighter +10%#244ABD
Darker −10%#142867
Darker −20%#0C183C
Darker −30%#030712
Darker −40%#000000
More saturated +25%#062EA8
Less saturated −25%#32447C

Channel breakdown

R28
G57
B146
Red28 (11%)
Green57 (22.4%)
Blue146 (57.3%)
Hue225.25°
Saturation (HSL)67.82%
Lightness34.12%
Dominant channelBlue
Hex per channelR 1C · G 39 · B 92

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Every value on this page was computed from “1c3992” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.