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Recognised as Colour

#2A87DF

  • #2A87DF
  • Blue
  • Dark
  • Nearest: Cornflower blue

#2A87DF is a blue with RGB values 42, 135, 223 and HSL 209°, 74%, 52%. 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

#2A87DF#2A87DF
HEX#2A87DF
RGBrgb(42, 135, 223)
RGB (0–1)0.1647, 0.5294, 0.8745
RGB percentages16.5%, 52.9%, 87.5%
HSLhsl(209.2, 73.9%, 52%)
HSV / HSBhsv(209.2, 81.2%, 87.5%)
CMYK81.2%, 39.5%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,787,295
CSS custom property--colour: #2A87DF;

Brightness & contrast

Relative luminance0.23148WCAG 2.x, 0 is black and 1 is white
Perceived brightness130 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.63:1
Contrast with white3.73:1WCAG normal text: Fail
Contrast with black5.63:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#D57820

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5C8DE3no red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#3E7DDDno green cones; the most common form, about 1% of men; ΔE 8.4 from the original
Tritanopia#009CA8no blue cones; rare, and affects men and women equally; ΔE 49.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.73:1WCAG large text: AA
Contrast with black, large text5.63:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 8.9Dodgerblue · ΔE 13.1Steel blue · ΔE 21.9Royal blue · ΔE 26.6Deep skyblue · ΔE 29.6Medium purple · ΔE 32.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 8.91, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DF822A
Analogous#2ADFDD, #2A2CDF
Triadic#DF2A87, #87DF2A
Split complementary#DF2A2C, #DFDD2A
Tetradic#DD2ADF, #DF822A, #2CDF2A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBEBFA
Lighter +30%#AFD2F3
Lighter +20%#83B9EC
Lighter +10%#56A0E6
Darker −10%#1C6DBA
Darker −20%#15538E
Darker −30%#0F3961
Darker −40%#081F35
More saturated +25%#0B88FE
Less saturated −25%#4986C0

Channel breakdown

R42
G135
B223
Red42 (16.5%)
Green135 (52.9%)
Blue223 (87.5%)
Hue209.17°
Saturation (HSL)73.88%
Lightness51.96%
Dominant channelBlue
Hex per channelR 2A · G 87 · B DF

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Every value on this page was computed from “2a87df” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.