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Recognised as Colour

#17549E

  • #17549E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#17549E is a blue with RGB values 23, 84, 158 and HSL 213°, 75%, 35%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#17549E#17549E
HEX#17549E
RGBrgb(23, 84, 158)
RGB (0–1)0.0902, 0.3294, 0.6196
RGB percentages9%, 32.9%, 62%
HSLhsl(212.9, 74.6%, 35.5%)
HSV / HSBhsv(212.9, 85.4%, 62%)
CMYK85.4%, 46.8%, 0%, 38%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,528,990
CSS custom property--colour: #17549E;

Brightness & contrast

Relative luminance0.08991WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.5:1
Contrast with white7.5:1WCAG normal text: AAA
Contrast with black2.8:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#E8AB61

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B5BA1no red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#054F9Dno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#006671no blue cones; rare, and affects men and women equally; ΔE 44.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.5:1WCAG large text: AAA
Contrast with black, large text2.8:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.6Steel blue · ΔE 25.2Cornflower blue · ΔE 26.2Royal blue · ΔE 28.4Dodgerblue · ΔE 29.5Midnight blue · ΔE 30.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9E6117
Analogous#17979E, #1E179E
Triadic#9E1754, #549E17
Split complementary#9E1E17, #979E17
Tetradic#9E1798, #9E6117, #179E1E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#92BCEF
Lighter +30%#65A1E9
Lighter +20%#3985E2
Lighter +10%#1D6CCB
Darker −10%#113C71
Darker −20%#0A2545
Darker −30%#040D18
Darker −40%#000000
More saturated +25%#0052B5
Less saturated −25%#2E5687

Channel breakdown

R23
G84
B158
Red23 (9%)
Green84 (32.9%)
Blue158 (62%)
Hue212.89°
Saturation (HSL)74.59%
Lightness35.49%
Dominant channelBlue
Hex per channelR 17 · G 54 · B 9E

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Every value on this page was computed from “17549e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.