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Recognised as Colour

#017DD3

  • #017DD3
  • Blue
  • Dark
  • Nearest: Cornflower blue

#017DD3 is a blue with RGB values 1, 125, 211 and HSL 205°, 99%, 42%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#017DD3#017DD3
HEX#017DD3
RGBrgb(1, 125, 211)
RGB (0–1)0.0039, 0.4902, 0.8275
RGB percentages0.4%, 49%, 82.7%
HSLhsl(204.6, 99.1%, 41.6%)
HSV / HSBhsv(204.6, 99.5%, 82.7%)
CMYK99.5%, 40.8%, 0%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer97,747
CSS custom property--colour: #017DD3;

Brightness & contrast

Relative luminance0.19377WCAG 2.x, 0 is black and 1 is white
Perceived brightness119.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.31:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#696969
Inverted#FE822C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5183D6no red cones; affects about 1% of men; ΔE 7.9 from the original
Deuteranopia#2F72D1no green cones; the most common form, about 1% of men; ΔE 9.8 from the original
Tritanopia#00929Eno blue cones; rare, and affects men and women equally; ΔE 48.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.31:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 12.6Dodgerblue · ΔE 15.4Steel blue · ΔE 21.4Royal blue · ΔE 26.5Deep skyblue · ΔE 31.6Dark slateblue · ΔE 31.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 12.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D35701
Analogous#01D3C0, #0114D3
Triadic#D3017D, #7DD301
Split complementary#D30114, #D3C001
Tetradic#C001D3, #D35701, #14D301

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A1D8FF
Lighter +30%#6FC3FE
Lighter +20%#3CAFFE
Lighter +10%#099AFE
Darker −10%#015FA0
Darker −20%#01416D
Darker −30%#00233B
Darker −40%#000508
More saturated +25%#007DD4
Less saturated −25%#1C78B8

Channel breakdown

R1
G125
B211
Red1 (0.4%)
Green125 (49%)
Blue211 (82.7%)
Hue204.57°
Saturation (HSL)99.06%
Lightness41.57%
Dominant channelBlue
Hex per channelR 01 · G 7D · B D3

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Every value on this page was computed from “017dd3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.