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Recognised as Colour

#347CB4

  • #347CB4
  • Blue
  • Dark
  • Nearest: Steel blue

#347CB4 is a blue with RGB values 52, 124, 180 and HSL 206°, 55%, 45%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#347CB4#347CB4
HEX#347CB4
RGBrgb(52, 124, 180)
RGB (0–1)0.2039, 0.4863, 0.7059
RGB percentages20.4%, 48.6%, 70.6%
HSLhsl(206.3, 55.2%, 45.5%)
HSV / HSBhsv(206.3, 71.1%, 70.6%)
CMYK71.1%, 31.1%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,439,796
CSS custom property--colour: #347CB4;

Brightness & contrast

Relative luminance0.18441WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.69:1
Contrast with white4.48:1WCAG normal text: Fail
Contrast with black4.69:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#CB834B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#637EB6no red cones; affects about 1% of men; ΔE 10.2 from the original
Deuteranopia#5172B3no green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#008A90no blue cones; rare, and affects men and women equally; ΔE 34.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.48:1WCAG large text: AA
Contrast with black, large text4.69:1WCAG large text: AAA

Named colours

Steel blue · ΔE 4.6Cornflower blue · ΔE 22Light slate grey · ΔE 25.7Slate grey · ΔE 25.7Deep skyblue · ΔE 27.3Light skyblue · ΔE 31.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 4.6, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B46C34
Analogous#34B4AC, #343CB4
Triadic#B4347C, #7CB434
Split complementary#B4343C, #B4AC34
Tetradic#AC34B4, #B46C34, #3CB434

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6DDEE
Lighter +30%#9EC5E3
Lighter +20%#76ADD8
Lighter +10%#4F95CC
Darker −10%#29618C
Darker −20%#1D4565
Darker −30%#122A3D
Darker −40%#060F16
More saturated +25%#1780D1
Less saturated −25%#517897

Channel breakdown

R52
G124
B180
Red52 (20.4%)
Green124 (48.6%)
Blue180 (70.6%)
Hue206.25°
Saturation (HSL)55.17%
Lightness45.49%
Dominant channelBlue
Hex per channelR 34 · G 7C · B B4

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Every value on this page was computed from “347cb4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.