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Recognised as Colour

#318DBB

  • #318DBB
  • Blue
  • Dark
  • Nearest: Steel blue

#318DBB is a blue with RGB values 49, 141, 187 and HSL 200°, 58%, 46%. 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

#318DBB#318DBB
HEX#318DBB
RGBrgb(49, 141, 187)
RGB (0–1)0.1922, 0.5529, 0.7333
RGB percentages19.2%, 55.3%, 73.3%
HSLhsl(200, 58.5%, 46.3%)
HSV / HSBhsv(200, 73.8%, 73.3%)
CMYK73.8%, 24.6%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,247,547
CSS custom property--colour: #318DBB;

Brightness & contrast

Relative luminance0.23291WCAG 2.x, 0 is black and 1 is white
Perceived brightness128 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.66:1
Contrast with white3.71:1WCAG normal text: Fail
Contrast with black5.66:1WCAG normal text: AA
Greyscale equivalent#7D7D7D
Inverted#CE7244

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#778CBDno red cones; affects about 1% of men; ΔE 16.9 from the original
Deuteranopia#647FBAno green cones; the most common form, about 1% of men; ΔE 18.1 from the original
Tritanopia#00999Dno blue cones; rare, and affects men and women equally; ΔE 28.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.71:1WCAG large text: AA
Contrast with black, large text5.66:1WCAG large text: AAA

Named colours

Steel blue · ΔE 7.9Deep skyblue · ΔE 21.2Light slate grey · ΔE 22.6Slate grey · ΔE 23.2Light skyblue · ΔE 24.6Sky blue · ΔE 26.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.92, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB5F31
Analogous#31BBA4, #3148BB
Triadic#BB318D, #8DBB31
Split complementary#BB3148, #BBA431
Tetradic#A431BB, #BB5F31, #48BB31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8E3F0
Lighter +30%#9FCEE6
Lighter +20%#77BADB
Lighter +10%#4EA5D1
Darker −10%#266F93
Darker −20%#1C506A
Darker −30%#113242
Darker −40%#071319
More saturated +25%#1497D8
Less saturated −25%#4F839E

Channel breakdown

R49
G141
B187
Red49 (19.2%)
Green141 (55.3%)
Blue187 (73.3%)
Hue200°
Saturation (HSL)58.47%
Lightness46.27%
Dominant channelBlue
Hex per channelR 31 · G 8D · B BB

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Every value on this page was computed from “318dbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.