Nerdulator> put something in

Colour

#559BDD

  • #559BDD
  • Blue
  • Dark
  • Nearest: Steel blue

#559BDD is a blue with RGB values 85, 155, 221 and HSL 209°, 67%, 60%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#559BDD#559BDD
HEX#559BDD
RGBrgb(85, 155, 221)
RGB (0–1)0.3333, 0.6078, 0.8667
RGB percentages33.3%, 60.8%, 86.7%
HSLhsl(209.1, 66.7%, 60%)
HSV / HSBhsv(209.1, 61.5%, 86.7%)
CMYK61.5%, 29.9%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,610,461
CSS custom property--colour: #559BDD;

Brightness & contrast

Relative luminance0.30594WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.12:1
Contrast with white2.95:1WCAG normal text: Fail
Contrast with black7.12:1WCAG normal text: AAA
Greyscale equivalent#919191
Inverted#AA6422

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7F9EE0no red cones; affects about 1% of men; ΔE 9.6 from the original
Deuteranopia#6C90DCno green cones; the most common form, about 1% of men; ΔE 11.3 from the original
Tritanopia#00ABB2no blue cones; rare, and affects men and women equally; ΔE 40.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.95:1WCAG large text: Fail
Contrast with black, large text7.12:1WCAG large text: AAA

Named colours

Steel blue · ΔE 12.7Cornflower blue · ΔE 14.7Deep skyblue · ΔE 18.8Light skyblue · ΔE 22.8Dodgerblue · ΔE 26.4Sky blue · ΔE 28.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 12.67, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD9755
Analogous#55DDDB, #5557DD
Triadic#DD559B, #9BDD55
Split complementary#DD5557, #DDDB55
Tetradic#DB55DD, #DD9755, #57DD55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D5E6F7
Lighter +20%#AACDEE
Lighter +10%#7FB4E5
Darker −10%#2A82D5
Darker −20%#2268AA
Darker −30%#194E80
Darker −40%#113455
More saturated +25%#3B9CF7
Less saturated −25%#6E9AC3

Channel breakdown

R85
G155
B221
Red85 (33.3%)
Green155 (60.8%)
Blue221 (86.7%)
Hue209.12°
Saturation (HSL)66.67%
Lightness60%
Dominant channelBlue
Hex per channelR 55 · G 9B · B DD

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “559bdd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.