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Recognised as Colour

#1C345B

  • #1C345B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1C345B is a blue with RGB values 28, 52, 91 and HSL 217°, 53%, 23%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1C345B#1C345B
HEX#1C345B
RGBrgb(28, 52, 91)
RGB (0–1)0.1098, 0.2039, 0.3569
RGB percentages11%, 20.4%, 35.7%
HSLhsl(217.1, 52.9%, 23.3%)
HSV / HSBhsv(217.1, 69.2%, 35.7%)
CMYK69.2%, 42.9%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,848,411
CSS custom property--colour: #1C345B;

Brightness & contrast

Relative luminance0.03458WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.41:1
Contrast with white12.41:1WCAG normal text: AAA
Contrast with black1.69:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#E3CBA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#23375Dno red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#19325Ano green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#003D43no blue cones; rare, and affects men and women equally; ΔE 26.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.41:1WCAG large text: AAA
Contrast with black, large text1.69:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.9Dark slate grey · ΔE 29.5Steel blue · ΔE 32.5Black · ΔE 34.4Dim grey · ΔE 35Slate grey · ΔE 35.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.93, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B431C
Analogous#1C545B, #231C5B
Triadic#5B1C34, #345B1C
Split complementary#5B231C, #545B1C
Tetradic#5B1C54, #5B431C, #1C5B23

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7096D3
Lighter +30%#4979C7
Lighter +20%#3461A9
Lighter +10%#284A82
Darker −10%#101E34
Darker −20%#04070D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0D306A
Less saturated −25%#2B384C

Channel breakdown

R28
G52
B91
Red28 (11%)
Green52 (20.4%)
Blue91 (35.7%)
Hue217.14°
Saturation (HSL)52.94%
Lightness23.33%
Dominant channelBlue
Hex per channelR 1C · G 34 · B 5B

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Every value on this page was computed from “1c345b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.