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Recognised as Colour

#045BB0

  • #045BB0
  • Blue
  • Dark
  • Nearest: Dark slateblue

#045BB0 is a blue with RGB values 4, 91, 176 and HSL 210°, 96%, 35%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#045BB0#045BB0
HEX#045BB0
RGBrgb(4, 91, 176)
RGB (0–1)0.0157, 0.3569, 0.6902
RGB percentages1.6%, 35.7%, 69%
HSLhsl(209.7, 95.6%, 35.3%)
HSV / HSBhsv(209.7, 97.7%, 69%)
CMYK97.7%, 48.3%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer285,616
CSS custom property--colour: #045BB0;

Brightness & contrast

Relative luminance0.10643WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.71:1
Contrast with white6.71:1WCAG normal text: AA
Contrast with black3.13:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#FBA44F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2863B3no red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#0055AEno green cones; the most common form, about 1% of men; ΔE 4.1 from the original
Tritanopia#00707Dno blue cones; rare, and affects men and women equally; ΔE 49.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.71:1WCAG large text: AAA
Contrast with black, large text3.13:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19.3Royal blue · ΔE 22.3Cornflower blue · ΔE 23.1Dodgerblue · ΔE 23.7Slate blue · ΔE 26.4Steel blue · ΔE 28
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.29, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B05904
Analogous#04B0AF, #0405B0
Triadic#B0045B, #5BB004
Split complementary#B00405, #B0AF04
Tetradic#AF04B0, #B05904, #05B004

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#84C1FC
Lighter +30%#52A7FB
Lighter +20%#208EFA
Lighter +10%#0575E2
Darker −10%#03417E
Darker −20%#02274C
Darker −30%#010E1A
Darker −40%#000000
More saturated +25%#005BB4
Less saturated −25%#1A5B9A

Channel breakdown

R4
G91
B176
Red4 (1.6%)
Green91 (35.7%)
Blue176 (69%)
Hue209.65°
Saturation (HSL)95.56%
Lightness35.29%
Dominant channelBlue
Hex per channelR 04 · G 5B · B B0

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Every value on this page was computed from “045bb0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.