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Recognised as Colour

#4571A9

  • #4571A9
  • Blue
  • Dark
  • Nearest: Steel blue

#4571A9 is a blue with RGB values 69, 113, 169 and HSL 214°, 42%, 47%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4571A9#4571A9
HEX#4571A9
RGBrgb(69, 113, 169)
RGB (0–1)0.2706, 0.4431, 0.6627
RGB percentages27.1%, 44.3%, 66.3%
HSLhsl(213.6, 42%, 46.7%)
HSV / HSBhsv(213.6, 59.2%, 66.3%)
CMYK59.2%, 33.1%, 0%, 33.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,551,081
CSS custom property--colour: #4571A9;

Brightness & contrast

Relative luminance0.1594WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.01:1
Contrast with white5.01:1WCAG normal text: AA
Contrast with black4.19:1WCAG normal text: Fail
Greyscale equivalent#6C6C6C
Inverted#BA8E56

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5A74ABno red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#4D6BA8no green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#007E85no blue cones; rare, and affects men and women equally; ΔE 36.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.01:1WCAG large text: AAA
Contrast with black, large text4.19:1WCAG large text: AA

Named colours

Steel blue · ΔE 8.7Cornflower blue · ΔE 22.2Slate grey · ΔE 25.1Light slate grey · ΔE 25.5Dark slateblue · ΔE 29.7Dodgerblue · ΔE 32.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.71, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A97D45
Analogous#45A3A9, #4B45A9
Triadic#A94571, #71A945
Split complementary#A94B45, #A3A945
Tetradic#A945A3, #A97D45, #45A94B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CFDBEB
Lighter +30%#ABC0DD
Lighter +20%#86A6CE
Lighter +10%#628BBF
Darker −10%#365985
Darker −20%#274161
Darker −30%#19283C
Darker −40%#0A1018
More saturated +25%#276DC7
Less saturated −25%#63758B

Channel breakdown

R69
G113
B169
Red69 (27.1%)
Green113 (44.3%)
Blue169 (66.3%)
Hue213.6°
Saturation (HSL)42.02%
Lightness46.67%
Dominant channelBlue
Hex per channelR 45 · G 71 · B A9

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Every value on this page was computed from “4571a9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.