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Recognised as Colour

#1C305E

  • #1C305E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1C305E is a blue with RGB values 28, 48, 94 and HSL 222°, 54%, 24%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1C305E#1C305E
HEX#1C305E
RGBrgb(28, 48, 94)
RGB (0–1)0.1098, 0.1882, 0.3686
RGB percentages11%, 18.8%, 36.9%
HSLhsl(221.8, 54.1%, 23.9%)
HSV / HSBhsv(221.8, 70.2%, 36.9%)
CMYK70.2%, 48.9%, 0%, 63.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,847,390
CSS custom property--colour: #1C305E;

Brightness & contrast

Relative luminance0.03169WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.85:1
Contrast with white12.85:1WCAG normal text: AAA
Contrast with black1.63:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#E3CFA1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#193560no red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#0D2F5Dno green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#003B42no blue cones; rare, and affects men and women equally; ΔE 31.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.85:1WCAG large text: AAA
Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.3Midnight blue · ΔE 30.4Steel blue · ΔE 34.4Dark slate grey · ΔE 35Black · ΔE 37.5Slate grey · ΔE 39.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.27, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E4A1C
Analogous#1C515E, #291C5E
Triadic#5E1C30, #305E1C
Split complementary#5E291C, #515E1C
Tetradic#5E1C51, #5E4A1C, #1C5E29

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#718FD5
Lighter +30%#4A70C9
Lighter +20%#3358AD
Lighter +10%#284485
Darker −10%#101C37
Darker −20%#05080F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0D2A6D
Less saturated −25%#2B364F

Channel breakdown

R28
G48
B94
Red28 (11%)
Green48 (18.8%)
Blue94 (36.9%)
Hue221.82°
Saturation (HSL)54.1%
Lightness23.92%
Dominant channelBlue
Hex per channelR 1C · G 30 · B 5E

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Every value on this page was computed from “1c305e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.