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Recognised as Colour

#5787BB

  • #5787BB
  • Blue
  • Dark
  • Nearest: Steel blue

#5787BB is a blue with RGB values 87, 135, 187 and HSL 211°, 42%, 54%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#5787BB#5787BB
HEX#5787BB
RGBrgb(87, 135, 187)
RGB (0–1)0.3412, 0.5294, 0.7333
RGB percentages34.1%, 52.9%, 73.3%
HSLhsl(211.2, 42.4%, 53.7%)
HSV / HSBhsv(211.2, 53.5%, 73.3%)
CMYK53.5%, 27.8%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,736,379
CSS custom property--colour: #5787BB;

Brightness & contrast

Relative luminance0.22942WCAG 2.x, 0 is black and 1 is white
Perceived brightness130.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.59:1
Contrast with white3.76:1WCAG normal text: Fail
Contrast with black5.59:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#A87844

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7289BDno red cones; affects about 1% of men; ΔE 7 from the original
Deuteranopia#657FBAno green cones; the most common form, about 1% of men; ΔE 8.1 from the original
Tritanopia#1D9399no blue cones; rare, and affects men and women equally; ΔE 33.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.76:1WCAG large text: AA
Contrast with black, large text5.59:1WCAG large text: AAA

Named colours

Steel blue · ΔE 3.9Light slate grey · ΔE 21.1Cornflower blue · ΔE 21.2Slate grey · ΔE 21.7Deep skyblue · ΔE 26.2Light skyblue · ΔE 26.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 3.89, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB8B57
Analogous#57B9BB, #5957BB
Triadic#BB5787, #87BB57
Split complementary#BB5957, #B9BB57
Tetradic#BB57B9, #BB8B57, #57BB59

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E8EFF6
Lighter +30%#C4D5E7
Lighter +20%#A0BBD8
Lighter +10%#7BA1CA
Darker −10%#406E9F
Darker −20%#32557A
Darker −30%#233B56
Darker −40%#142232
More saturated +25%#3A86D8
Less saturated −25%#75889D

Channel breakdown

R87
G135
B187
Red87 (34.1%)
Green135 (52.9%)
Blue187 (73.3%)
Hue211.2°
Saturation (HSL)42.37%
Lightness53.73%
Dominant channelBlue
Hex per channelR 57 · G 87 · B BB

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Every value on this page was computed from “5787bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.