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Colour

#2A66BC

  • #2A66BC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#2A66BC is a blue with RGB values 42, 102, 188 and HSL 215°, 63%, 45%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#2A66BC#2A66BC
HEX#2A66BC
RGBrgb(42, 102, 188)
RGB (0–1)0.1647, 0.4, 0.7373
RGB percentages16.5%, 40%, 73.7%
HSLhsl(215.3, 63.5%, 45.1%)
HSV / HSBhsv(215.3, 77.7%, 73.7%)
CMYK77.7%, 45.7%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,778,812
CSS custom property--colour: #2A66BC;

Brightness & contrast

Relative luminance0.13626WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.64:1
Contrast with white5.64:1WCAG normal text: AA
Contrast with black3.73:1WCAG normal text: Fail
Greyscale equivalent#5F5F5F
Inverted#D59943

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#396EBFno red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#1661BAno green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#007A88no 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 text5.64:1WCAG large text: AAA
Contrast with black, large text3.73:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 18.4Dodgerblue · ΔE 20.2Royal blue · ΔE 21Dark slateblue · ΔE 21.2Slate blue · ΔE 25.5Steel blue · ΔE 25.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 18.44, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BC802A
Analogous#2AAFBC, #372ABC
Triadic#BC2A66, #66BC2A
Split complementary#BC372A, #AFBC2A
Tetradic#BC2AAF, #BC802A, #2ABC37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1D5F1
Lighter +30%#97B8E8
Lighter +20%#6E9CDE
Lighter +10%#4480D5
Darker −10%#214F92
Darker −20%#173969
Darker −30%#0E223F
Darker −40%#050C15
More saturated +25%#0D61D9
Less saturated −25%#476B9F

Channel breakdown

R42
G102
B188
Red42 (16.5%)
Green102 (40%)
Blue188 (73.7%)
Hue215.34°
Saturation (HSL)63.48%
Lightness45.1%
Dominant channelBlue
Hex per channelR 2A · G 66 · B BC

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Every value on this page was computed from “2a66bc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.