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Colour

#303C69

  • #303C69
  • Blue
  • Dark
  • Nearest: Dark slateblue

#303C69 is a blue with RGB values 48, 60, 105 and HSL 227°, 37%, 30%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#303C69#303C69
HEX#303C69
RGBrgb(48, 60, 105)
RGB (0–1)0.1882, 0.2353, 0.4118
RGB percentages18.8%, 23.5%, 41.2%
HSLhsl(227.4, 37.3%, 30%)
HSV / HSBhsv(227.4, 54.3%, 41.2%)
CMYK54.3%, 42.9%, 0%, 58.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,161,193
CSS custom property--colour: #303C69;

Brightness & contrast

Relative luminance0.0488WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.63:1
Contrast with white10.63:1WCAG normal text: AAA
Contrast with black1.98:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#CFC396

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A416Bno red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#243C68no green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#17464Dno 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 text10.63:1WCAG large text: AAA
Contrast with black, large text1.98:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.4Steel blue · ΔE 29.6Dark slate grey · ΔE 32.4Midnight blue · ΔE 32.9Slate grey · ΔE 33.6Dim grey · ΔE 34.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#695D30
Analogous#305969, #403069
Triadic#69303C, #3C6930
Split complementary#694030, #596930
Tetradic#693059, #695D30, #306940

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#96A2CF
Lighter +30%#7383BF
Lighter +20%#5064AF
Lighter +10%#40508C
Darker −10%#202846
Darker −20%#101423
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1D317C
Less saturated −25%#434756

Channel breakdown

R48
G60
B105
Red48 (18.8%)
Green60 (23.5%)
Blue105 (41.2%)
Hue227.37°
Saturation (HSL)37.25%
Lightness30%
Dominant channelBlue
Hex per channelR 30 · G 3C · B 69

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Every value on this page was computed from “303c69” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.