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Recognised as Colour

#0587D3

  • #0587D3
  • Blue
  • Dark
  • Nearest: Cornflower blue

#0587D3 is a blue with RGB values 5, 135, 211 and HSL 202°, 95%, 42%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#0587D3#0587D3
HEX#0587D3
RGBrgb(5, 135, 211)
RGB (0–1)0.0196, 0.5294, 0.8275
RGB percentages2%, 52.9%, 82.7%
HSLhsl(202.1, 95.4%, 42.4%)
HSV / HSBhsv(202.1, 97.6%, 82.7%)
CMYK97.6%, 36%, 0%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer362,451
CSS custom property--colour: #0587D3;

Brightness & contrast

Relative luminance0.22063WCAG 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 5.41:1
Contrast with white3.88:1WCAG normal text: Fail
Contrast with black5.41:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#FA782C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#628AD6no red cones; affects about 1% of men; ΔE 11.8 from the original
Deuteranopia#467AD2no green cones; the most common form, about 1% of men; ΔE 14 from the original
Tritanopia#009AA3no blue cones; rare, and affects men and women equally; ΔE 43.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.88:1WCAG large text: AA
Contrast with black, large text5.41:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 14.2Steel blue · ΔE 15.4Dodgerblue · ΔE 20.9Deep skyblue · ΔE 24.5Light skyblue · ΔE 32.9Royal blue · ΔE 34.3
Nearest named CSS colourCornflower blue (#6495ED)ΔE 14.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D35105
Analogous#05D3B8, #0520D3
Triadic#D30587, #87D305
Split complementary#D30520, #D3B805
Tetradic#B805D3, #D35105, #20D305

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7DDFD
Lighter +30%#75CAFC
Lighter +20%#43B7FB
Lighter +10%#12A4F9
Darker −10%#0467A1
Darker −20%#03476F
Darker −30%#01273E
Darker −40%#00080C
More saturated +25%#0088D8
Less saturated −25%#2080B8

Channel breakdown

R5
G135
B211
Red5 (2%)
Green135 (52.9%)
Blue211 (82.7%)
Hue202.14°
Saturation (HSL)95.37%
Lightness42.35%
Dominant channelBlue
Hex per channelR 05 · G 87 · B D3

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Every value on this page was computed from “0587d3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.