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Recognised as Colour

#4570A9

  • #4570A9
  • Blue
  • Dark
  • Nearest: Steel blue

#4570A9 is a blue with RGB values 69, 112, 169 and HSL 214°, 42%, 47%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4570A9#4570A9
HEX#4570A9
RGBrgb(69, 112, 169)
RGB (0–1)0.2706, 0.4392, 0.6627
RGB percentages27.1%, 43.9%, 66.3%
HSLhsl(214.2, 42%, 46.7%)
HSV / HSBhsv(214.2, 59.2%, 66.3%)
CMYK59.2%, 33.7%, 0%, 33.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,550,825
CSS custom property--colour: #4570A9;

Brightness & contrast

Relative luminance0.15718WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.07:1
Contrast with white5.07:1WCAG normal text: AA
Contrast with black4.14:1WCAG normal text: Fail
Greyscale equivalent#6B6B6B
Inverted#BA8F56

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5874ABno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#4B6AA8no green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#007D85no 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 text5.07:1WCAG large text: AAA
Contrast with black, large text4.14:1WCAG large text: AA

Named colours

Steel blue · ΔE 9.5Cornflower blue · ΔE 22Slate grey · ΔE 25.7Light slate grey · ΔE 26.1Dark slateblue · ΔE 29Dodgerblue · ΔE 31.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.46, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A97E45
Analogous#45A2A9, #4C45A9
Triadic#A94570, #70A945
Split complementary#A94C45, #A2A945
Tetradic#A945A2, #A97E45, #45A94C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CFDBEB
Lighter +30%#ABC0DD
Lighter +20%#86A5CE
Lighter +10%#628ABF
Darker −10%#365885
Darker −20%#274061
Darker −30%#19283C
Darker −40%#0A1018
More saturated +25%#276CC7
Less saturated −25%#63748B

Channel breakdown

R69
G112
B169
Red69 (27.1%)
Green112 (43.9%)
Blue169 (66.3%)
Hue214.2°
Saturation (HSL)42.02%
Lightness46.67%
Dominant channelBlue
Hex per channelR 45 · G 70 · B A9

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Every value on this page was computed from “4570a9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.