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Recognised as Colour

#398BC5

  • #398BC5
  • Blue
  • Dark
  • Nearest: Steel blue

#398BC5 is a blue with RGB values 57, 139, 197 and HSL 205°, 55%, 50%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#398BC5#398BC5
HEX#398BC5
RGBrgb(57, 139, 197)
RGB (0–1)0.2235, 0.5451, 0.7725
RGB percentages22.4%, 54.5%, 77.3%
HSLhsl(204.9, 55.1%, 49.8%)
HSV / HSBhsv(204.9, 71.1%, 77.3%)
CMYK71.1%, 29.4%, 0%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,771,333
CSS custom property--colour: #398BC5;

Brightness & contrast

Relative luminance0.23366WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.67:1
Contrast with white3.7:1WCAG normal text: Fail
Contrast with black5.67:1WCAG normal text: AA
Greyscale equivalent#7E7E7E
Inverted#C6743A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#718CC8no red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#5D7FC4no green cones; the most common form, about 1% of men; ΔE 13.9 from the original
Tritanopia#00999Fno blue cones; rare, and affects men and women equally; ΔE 35.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.7:1WCAG large text: AA
Contrast with black, large text5.67:1WCAG large text: AAA

Named colours

Steel blue · ΔE 6.1Cornflower blue · ΔE 20.3Deep skyblue · ΔE 21.5Light skyblue · ΔE 26.3Light slate grey · ΔE 26.4Slate grey · ΔE 27.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 6.11, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C57339
Analogous#39C5B9, #3945C5
Triadic#C5398B, #8BC539
Split complementary#C53945, #C5B939
Tetradic#B939C5, #C57339, #45C539

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7E7F3
Lighter +30%#AFD0E8
Lighter +20%#88B9DC
Lighter +10%#60A2D1
Darker −10%#2E6F9D
Darker −20%#225376
Darker −30%#17374E
Darker −40%#0B1B27
More saturated +25%#1990E5
Less saturated −25%#5986A5

Channel breakdown

R57
G139
B197
Red57 (22.4%)
Green139 (54.5%)
Blue197 (77.3%)
Hue204.86°
Saturation (HSL)55.12%
Lightness49.8%
Dominant channelBlue
Hex per channelR 39 · G 8B · B C5

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Every value on this page was computed from “398bc5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.