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Recognised as Colour

#1780EF

  • #1780EF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#1780EF is a blue with RGB values 23, 128, 239 and HSL 211°, 87%, 51%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#1780EF#1780EF
HEX#1780EF
RGBrgb(23, 128, 239)
RGB (0–1)0.0902, 0.502, 0.9373
RGB percentages9%, 50.2%, 93.7%
HSLhsl(210.8, 87.1%, 51.4%)
HSV / HSBhsv(210.8, 90.4%, 93.7%)
CMYK90.4%, 46.4%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,540,335
CSS custom property--colour: #1780EF;

Brightness & contrast

Relative luminance0.21852WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.37:1
Contrast with white3.91:1WCAG normal text: Fail
Contrast with black5.37:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#E87F10

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#408BF3no red cones; affects about 1% of men; ΔE 6.4 from the original
Deuteranopia#0078EDno green cones; the most common form, about 1% of men; ΔE 5.3 from the original
Tritanopia#009BACno blue cones; rare, and affects men and women equally; ΔE 60.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.91:1WCAG large text: AA
Contrast with black, large text5.37:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 6.5Royal blue · ΔE 14.4Cornflower blue · ΔE 16.7Slate blue · ΔE 24.9Medium purple · ΔE 27Medium slateblue · ΔE 27.9
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 6.46, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EF8617
Analogous#17ECEF, #1A17EF
Triadic#EF1780, #80EF17
Split complementary#EF1A17, #ECEF17
Tetradic#EF17EC, #EF8617, #17EF1A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6E8FC
Lighter +30%#A6CEF9
Lighter +20%#76B4F6
Lighter +10%#479AF2
Darker −10%#0E67C5
Darker −20%#0A4E96
Darker −30%#073566
Darker −40%#041C36
More saturated +25%#0780FF
Less saturated −25%#3681D0

Channel breakdown

R23
G128
B239
Red23 (9%)
Green128 (50.2%)
Blue239 (93.7%)
Hue210.83°
Saturation (HSL)87.1%
Lightness51.37%
Dominant channelBlue
Hex per channelR 17 · G 80 · B EF

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Every value on this page was computed from “1780ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.