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Recognised as Colour

#587FBB

  • #587FBB
  • Blue
  • Dark
  • Nearest: Steel blue

#587FBB is a blue with RGB values 88, 127, 187 and HSL 216°, 42%, 54%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#587FBB#587FBB
HEX#587FBB
RGBrgb(88, 127, 187)
RGB (0–1)0.3451, 0.498, 0.7333
RGB percentages34.5%, 49.8%, 73.3%
HSLhsl(216.4, 42.1%, 53.9%)
HSV / HSBhsv(216.4, 52.9%, 73.3%)
CMYK52.9%, 32.1%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,799,867
CSS custom property--colour: #587FBB;

Brightness & contrast

Relative luminance0.20841WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.17:1
Contrast with white4.06:1WCAG normal text: Fail
Contrast with black5.17:1WCAG normal text: AA
Greyscale equivalent#7B7B7B
Inverted#A78044

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6783BEno red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#5B7ABAno green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#248C94no blue cones; rare, and affects men and women equally; ΔE 37.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.06:1WCAG large text: AA
Contrast with black, large text5.17:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.6Cornflower blue · ΔE 17.3Light slate grey · ΔE 25.5Slate grey · ΔE 25.8Dodgerblue · ΔE 29.2Deep skyblue · ΔE 30
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.62, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB9458
Analogous#58B0BB, #6358BB
Triadic#BB587F, #7FBB58
Split complementary#BB6358, #B0BB58
Tetradic#BB58B0, #BB9458, #58BB63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9EEF6
Lighter +30%#C5D2E7
Lighter +20%#A0B7D9
Lighter +10%#7C9BCA
Darker −10%#41669F
Darker −20%#324F7B
Darker −30%#233857
Darker −40%#152032
More saturated +25%#3B79D8
Less saturated −25%#75859E

Channel breakdown

R88
G127
B187
Red88 (34.5%)
Green127 (49.8%)
Blue187 (73.3%)
Hue216.36°
Saturation (HSL)42.13%
Lightness53.92%
Dominant channelBlue
Hex per channelR 58 · G 7F · B BB

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Every value on this page was computed from “587fbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.