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Recognised as Colour

#1388BB

  • #1388BB
  • Cyan
  • Dark
  • Nearest: Steel blue

#1388BB is a cyan with RGB values 19, 136, 187 and HSL 198°, 82%, 40%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1388BB#1388BB
HEX#1388BB
RGBrgb(19, 136, 187)
RGB (0–1)0.0745, 0.5333, 0.7333
RGB percentages7.5%, 53.3%, 73.3%
HSLhsl(198.2, 81.6%, 40.4%)
HSV / HSBhsv(198.2, 89.8%, 73.3%)
CMYK89.8%, 27.3%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,280,187
CSS custom property--colour: #1388BB;

Brightness & contrast

Relative luminance0.21335WCAG 2.x, 0 is black and 1 is white
Perceived brightness122.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.27:1
Contrast with white3.99:1WCAG normal text: Fail
Contrast with black5.27:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#EC7744

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F87BDno red cones; affects about 1% of men; ΔE 17.6 from the original
Deuteranopia#5979BAno green cones; the most common form, about 1% of men; ΔE 19.1 from the original
Tritanopia#00959Ano blue cones; rare, and affects men and women equally; ΔE 30 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.99:1WCAG large text: AA
Contrast with black, large text5.27:1WCAG large text: AAA

Named colours

Steel blue · ΔE 7.9Deep skyblue · ΔE 21.6Light slate grey · ΔE 25.7Slate grey · ΔE 26.1Cornflower blue · ΔE 26.6Light skyblue · ΔE 27.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.9, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB4613
Analogous#13BB9A, #1334BB
Triadic#BB1388, #88BB13
Split complementary#BB1334, #BB9A13
Tetradic#9A13BB, #BB4613, #34BB13

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4DDF6
Lighter +30%#76CCF1
Lighter +20%#48BAEC
Lighter +10%#19A9E8
Darker −10%#0E668D
Darker −20%#0A455E
Darker −30%#052330
Darker −40%#000102
More saturated +25%#008FCE
Less saturated −25%#2D7EA1

Channel breakdown

R19
G136
B187
Red19 (7.5%)
Green136 (53.3%)
Blue187 (73.3%)
Hue198.21°
Saturation (HSL)81.55%
Lightness40.39%
Dominant channelBlue
Hex per channelR 13 · G 88 · B BB

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Every value on this page was computed from “1388bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.