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Recognised as Colour

#497CBB

  • #497CBB
  • Blue
  • Dark
  • Nearest: Steel blue

#497CBB is a blue with RGB values 73, 124, 187 and HSL 213°, 46%, 51%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#497CBB#497CBB
HEX#497CBB
RGBrgb(73, 124, 187)
RGB (0–1)0.2863, 0.4863, 0.7333
RGB percentages28.6%, 48.6%, 73.3%
HSLhsl(213.2, 45.6%, 51%)
HSV / HSBhsv(213.2, 61%, 73.3%)
CMYK61%, 33.7%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,816,059
CSS custom property--colour: #497CBB;

Brightness & contrast

Relative luminance0.1942WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.3:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#767676
Inverted#B68344

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6180BEno red cones; affects about 1% of men; ΔE 5.2 from the original
Deuteranopia#5275BAno green cones; the most common form, about 1% of men; ΔE 6.3 from the original
Tritanopia#008A93no blue cones; rare, and affects men and women equally; ΔE 38.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.3:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA

Named colours

Steel blue · ΔE 9Cornflower blue · ΔE 16.9Dodgerblue · ΔE 27.5Light slate grey · ΔE 27.9Slate grey · ΔE 28.1Deep skyblue · ΔE 29.6
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.96, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB8849
Analogous#49B5BB, #4F49BB
Triadic#BB497C, #7CBB49
Split complementary#BB4F49, #B5BB49
Tetradic#BB49B5, #BB8849, #49BB4F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEE7F2
Lighter +30%#B8CCE5
Lighter +20%#93B1D7
Lighter +10%#6E97C9
Darker −10%#396398
Darker −20%#2B4B73
Darker −30%#1D334E
Darker −40%#0F1B29
More saturated +25%#2A79DA
Less saturated −25%#687F9C

Channel breakdown

R73
G124
B187
Red73 (28.6%)
Green124 (48.6%)
Blue187 (73.3%)
Hue213.16°
Saturation (HSL)45.6%
Lightness50.98%
Dominant channelBlue
Hex per channelR 49 · G 7C · B BB

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Every value on this page was computed from “497cbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.