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Recognised as Colour

#304E6B

  • #304E6B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#304E6B is a blue with RGB values 48, 78, 107 and HSL 209°, 38%, 30%. It is a dark colour, so white text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#304E6B#304E6B
HEX#304E6B
RGBrgb(48, 78, 107)
RGB (0–1)0.1882, 0.3059, 0.4196
RGB percentages18.8%, 30.6%, 42%
HSLhsl(209.5, 38.1%, 30.4%)
HSV / HSBhsv(209.5, 55.1%, 42%)
CMYK55.1%, 27.1%, 0%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,165,803
CSS custom property--colour: #304E6B;

Brightness & contrast

Relative luminance0.07139WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.65:1
Contrast with white8.65:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#CFB194

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#424F6Cno red cones; affects about 1% of men; ΔE 5.4 from the original
Deuteranopia#3A496Ano green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#105558no blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.65:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.2Slate grey · ΔE 22.8Dim grey · ΔE 23.7Steel blue · ΔE 23.7Light slate grey · ΔE 25.5Gray · ΔE 29.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.17, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B4D30
Analogous#306B6B, #30306B
Triadic#6B304E, #4E6B30
Split complementary#6B3030, #6B6B30
Tetradic#6B306B, #6B4D30, #306B30

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#97B4D0
Lighter +30%#749BC0
Lighter +20%#5081B1
Lighter +10%#40688E
Darker −10%#203448
Darker −20%#101B25
Darker −30%#010101
Darker −40%#000000
More saturated +25%#1D4E7E
Less saturated −25%#434E58

Channel breakdown

R48
G78
B107
Red48 (18.8%)
Green78 (30.6%)
Blue107 (42%)
Hue209.49°
Saturation (HSL)38.06%
Lightness30.39%
Dominant channelBlue
Hex per channelR 30 · G 4E · B 6B

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Every value on this page was computed from “304e6b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.