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Recognised as Colour

#1771BC

  • #1771BC
  • Blue
  • Dark
  • Nearest: Steel blue

#1771BC is a blue with RGB values 23, 113, 188 and HSL 207°, 78%, 41%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1771BC#1771BC
HEX#1771BC
RGBrgb(23, 113, 188)
RGB (0–1)0.0902, 0.4431, 0.7373
RGB percentages9%, 44.3%, 73.7%
HSLhsl(207.3, 78.2%, 41.4%)
HSV / HSBhsv(207.3, 87.8%, 73.7%)
CMYK87.8%, 39.9%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,536,444
CSS custom property--colour: #1771BC;

Brightness & contrast

Relative luminance0.15623WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.09:1
Contrast with white5.09:1WCAG normal text: AA
Contrast with black4.12:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#E88E43

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4C76BFno red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#3168BBno green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#00838Dno blue cones; rare, and affects men and women equally; ΔE 43.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.09:1WCAG large text: AAA
Contrast with black, large text4.12:1WCAG large text: AA

Named colours

Steel blue · ΔE 16.9Cornflower blue · ΔE 17Dodgerblue · ΔE 22.5Dark slateblue · ΔE 28.3Royal blue · ΔE 30.1Deep skyblue · ΔE 33.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 16.89, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC6217
Analogous#17BCB4, #171FBC
Triadic#BC1771, #71BC17
Split complementary#BC171F, #BCB417
Tetradic#B417BC, #BC6217, #1FBC17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AAD3F5
Lighter +30%#7DBBEF
Lighter +20%#4FA4EA
Lighter +10%#228CE4
Darker −10%#11568F
Darker −20%#0C3A61
Darker −30%#061F34
Darker −40%#010406
More saturated +25%#0073D3
Less saturated −25%#316FA2

Channel breakdown

R23
G113
B188
Red23 (9%)
Green113 (44.3%)
Blue188 (73.7%)
Hue207.27°
Saturation (HSL)78.2%
Lightness41.37%
Dominant channelBlue
Hex per channelR 17 · G 71 · B BC

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Every value on this page was computed from “1771bc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.