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Colour

#1183B3

  • #1183B3
  • Cyan
  • Dark
  • Nearest: Steel blue

#1183B3 is a cyan with RGB values 17, 131, 179 and HSL 198°, 83%, 38%. 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

#1183B3#1183B3
HEX#1183B3
RGBrgb(17, 131, 179)
RGB (0–1)0.0667, 0.5137, 0.702
RGB percentages6.7%, 51.4%, 70.2%
HSLhsl(197.8, 82.7%, 38.4%)
HSV / HSBhsv(197.8, 90.5%, 70.2%)
CMYK90.5%, 26.8%, 0%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,147,827
CSS custom property--colour: #1183B3;

Brightness & contrast

Relative luminance0.19606WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.92:1
Contrast with white4.27:1WCAG normal text: Fail
Contrast with black4.92:1WCAG normal text: AA
Greyscale equivalent#6E6E6E
Inverted#EE7C4C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6B82B5no red cones; affects about 1% of men; ΔE 17.4 from the original
Deuteranopia#5774B2no green cones; the most common form, about 1% of men; ΔE 19.3 from the original
Tritanopia#009093no blue cones; rare, and affects men and women equally; ΔE 29.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.27:1WCAG large text: AA
Contrast with black, large text4.92:1WCAG large text: AAA

Named colours

Steel blue · ΔE 7.7Deep skyblue · ΔE 23.8Light slate grey · ΔE 24.6Slate grey · ΔE 24.8Cornflower blue · ΔE 28.4Light skyblue · ΔE 28.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.74, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B34111
Analogous#11B392, #1132B3
Triadic#B31183, #83B311
Split complementary#B31132, #B39211
Tetradic#9211B3, #B34111, #32B311

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9BDBF5
Lighter +30%#6CCAF1
Lighter +20%#3DB9ED
Lighter +10%#15A5E2
Darker −10%#0D6184
Darker −20%#083F56
Darker −30%#041D27
Darker −40%#000000
More saturated +25%#008AC4
Less saturated −25%#29799B

Channel breakdown

R17
G131
B179
Red17 (6.7%)
Green131 (51.4%)
Blue179 (70.2%)
Hue197.78°
Saturation (HSL)82.65%
Lightness38.43%
Dominant channelBlue
Hex per channelR 11 · G 83 · B B3

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Every value on this page was computed from “1183b3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.