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Colour

#1C3A67

  • #1C3A67
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1C3A67 is a blue with RGB values 28, 58, 103 and HSL 216°, 57%, 26%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1C3A67#1C3A67
HEX#1C3A67
RGBrgb(28, 58, 103)
RGB (0–1)0.1098, 0.2275, 0.4039
RGB percentages11%, 22.7%, 40.4%
HSLhsl(216, 57.3%, 25.7%)
HSV / HSBhsv(216, 72.8%, 40.4%)
CMYK72.8%, 43.7%, 0%, 59.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,849,959
CSS custom property--colour: #1C3A67;

Brightness & contrast

Relative luminance0.04252WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.35:1
Contrast with white11.35:1WCAG normal text: AAA
Contrast with black1.85:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#E3C598

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#253E69no red cones; affects about 1% of men; ΔE 2.5 from the original
Deuteranopia#193766no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#00444Bno blue cones; rare, and affects men and women equally; ΔE 29.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.35:1WCAG large text: AAA
Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.8Steel blue · ΔE 29.7Dark slate grey · ΔE 31.9Midnight blue · ΔE 34Slate grey · ΔE 35.1Dim grey · ΔE 36.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#67491C
Analogous#1C6067, #231C67
Triadic#671C3A, #3A671C
Split complementary#67231C, #60671C
Tetradic#671C60, #67491C, #1C6724

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#759DDA
Lighter +30%#4D81CF
Lighter +20%#3267B7
Lighter +10%#27518F
Darker −10%#11233F
Darker −20%#060D17
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C3777
Less saturated −25%#2C3D57

Channel breakdown

R28
G58
B103
Red28 (11%)
Green58 (22.7%)
Blue103 (40.4%)
Hue216°
Saturation (HSL)57.25%
Lightness25.69%
Dominant channelBlue
Hex per channelR 1C · G 3A · B 67

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Every value on this page was computed from “1c3a67” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.