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Recognised as Colour

#174B69

  • #174B69
  • Blue
  • Dark
  • Nearest: Dark slate grey

#174B69 is a blue with RGB values 23, 75, 105 and HSL 202°, 64%, 25%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#174B69#174B69
HEX#174B69
RGBrgb(23, 75, 105)
RGB (0–1)0.0902, 0.2941, 0.4118
RGB percentages9%, 29.4%, 41.2%
HSLhsl(202, 64.1%, 25.1%)
HSV / HSBhsv(202, 78.1%, 41.2%)
CMYK78.1%, 28.6%, 0%, 58.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,526,633
CSS custom property--colour: #174B69;

Brightness & contrast

Relative luminance0.06234WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.35:1
Contrast with white9.35:1WCAG normal text: AAA
Contrast with black2.25:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#E8B496

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D4B6Ano red cones; affects about 1% of men; ΔE 9.7 from the original
Deuteranopia#324368no green cones; the most common form, about 1% of men; ΔE 10.8 from the original
Tritanopia#005355no blue cones; rare, and affects men and women equally; ΔE 21 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.35:1WCAG large text: AAA
Contrast with black, large text2.25:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.5Steel blue · ΔE 24.6Slate grey · ΔE 25.9Dim grey · ΔE 27.2Light slate grey · ΔE 28.5Teal · ΔE 32.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#693517
Analogous#17695E, #172269
Triadic#69174B, #4B6917
Split complementary#691722, #695E17
Tetradic#5E1769, #693517, #226917

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6DB5DF
Lighter +30%#43A0D6
Lighter +20%#2987BD
Lighter +10%#206993
Darker −10%#0E2D3F
Darker −20%#050F15
Darker −30%#000000
Darker −40%#000000
More saturated +25%#074F79
Less saturated −25%#274759

Channel breakdown

R23
G75
B105
Red23 (9%)
Green75 (29.4%)
Blue105 (41.2%)
Hue201.95°
Saturation (HSL)64.06%
Lightness25.1%
Dominant channelBlue
Hex per channelR 17 · G 4B · B 69

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Every value on this page was computed from “174b69” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.