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Recognised as Colour

#2A87DA

  • #2A87DA
  • Blue
  • Dark
  • Nearest: Cornflower blue

#2A87DA is a blue with RGB values 42, 135, 218 and HSL 208°, 70%, 51%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#2A87DA#2A87DA
HEX#2A87DA
RGBrgb(42, 135, 218)
RGB (0–1)0.1647, 0.5294, 0.8549
RGB percentages16.5%, 52.9%, 85.5%
HSLhsl(208.3, 70.4%, 51%)
HSV / HSBhsv(208.3, 80.7%, 85.5%)
CMYK80.7%, 38.1%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,787,290
CSS custom property--colour: #2A87DA;

Brightness & contrast

Relative luminance0.22882WCAG 2.x, 0 is black and 1 is white
Perceived brightness129 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.58:1
Contrast with white3.77:1WCAG normal text: Fail
Contrast with black5.58:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#D57825

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F8CDDno red cones; affects about 1% of men; ΔE 8 from the original
Deuteranopia#447CD8no green cones; the most common form, about 1% of men; ΔE 9.9 from the original
Tritanopia#009BA6no blue cones; rare, and affects men and women equally; ΔE 47.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.77:1WCAG large text: AA
Contrast with black, large text5.58:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.8Dodgerblue · ΔE 16Steel blue · ΔE 19.1Deep skyblue · ΔE 27.7Royal blue · ΔE 29.2Medium purple · ΔE 34.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.84, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DA7D2A
Analogous#2ADAD5, #2A2FDA
Triadic#DA2A87, #87DA2A
Split complementary#DA2A2F, #DAD52A
Tetradic#D52ADA, #DA7D2A, #2FDA2A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8E9F8
Lighter +30%#ACD0F1
Lighter +20%#81B8E9
Lighter +10%#559FE2
Darker −10%#1F6DB2
Darker −20%#175287
Darker −30%#10385B
Darker −40%#081D30
More saturated +25%#0B89F9
Less saturated −25%#4985BB

Channel breakdown

R42
G135
B218
Red42 (16.5%)
Green135 (52.9%)
Blue218 (85.5%)
Hue208.3°
Saturation (HSL)70.4%
Lightness50.98%
Dominant channelBlue
Hex per channelR 2A · G 87 · B DA

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Every value on this page was computed from “2a87da” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.