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Recognised as Colour

#175ED4

  • #175ED4
  • Blue
  • Dark
  • Nearest: Royal blue

#175ED4 is a blue with RGB values 23, 94, 212 and HSL 217°, 80%, 46%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#175ED4#175ED4
HEX#175ED4
RGBrgb(23, 94, 212)
RGB (0–1)0.0902, 0.3686, 0.8314
RGB percentages9%, 36.9%, 83.1%
HSLhsl(217.5, 80.4%, 46.1%)
HSV / HSBhsv(217.5, 89.2%, 83.1%)
CMYK89.2%, 55.7%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,531,604
CSS custom property--colour: #175ED4;

Brightness & contrast

Relative luminance0.12941WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.85:1
Contrast with white5.85:1WCAG normal text: AA
Contrast with black3.59:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#E8A12B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006DD8no red cones; affects about 1% of men; ΔE 10.9 from the original
Deuteranopia#005DD2no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#007C90no blue cones; rare, and affects men and women equally; ΔE 66.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.85:1WCAG large text: AAA
Contrast with black, large text3.59:1WCAG large text: AA

Named colours

Royal blue · ΔE 5.5Slate blue · ΔE 14.6Medium slateblue · ΔE 19.1Dodgerblue · ΔE 22.4Medium purple · ΔE 23.8Dark slateblue · ΔE 27
Nearest named CSS colourRoyal blue (#4169E1)ΔE 5.54, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D48D17
Analogous#17BCD4, #2E17D4
Triadic#D4175E, #5ED417
Split complementary#D42F17, #BCD417
Tetradic#D417BD, #D48D17, #17D42F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFD4F8
Lighter +30%#91B6F3
Lighter +20%#6397EE
Lighter +10%#3579E9
Darker −10%#124AA6
Darker −20%#0D3578
Darker −30%#08214A
Darker −40%#030C1C
More saturated +25%#0058EB
Less saturated −25%#3465B7

Channel breakdown

R23
G94
B212
Red23 (9%)
Green94 (36.9%)
Blue212 (83.1%)
Hue217.46°
Saturation (HSL)80.43%
Lightness46.08%
Dominant channelBlue
Hex per channelR 17 · G 5E · B D4

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Every value on this page was computed from “175ed4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.