Nerdulator> put something in

Colour

#173B57

  • #173B57
  • Blue
  • Dark
  • Nearest: Dark slate grey

#173B57 is a blue with RGB values 23, 59, 87 and HSL 206°, 58%, 22%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#173B57#173B57
HEX#173B57
RGBrgb(23, 59, 87)
RGB (0–1)0.0902, 0.2314, 0.3412
RGB percentages9%, 23.1%, 34.1%
HSLhsl(206.3, 58.2%, 21.6%)
HSV / HSBhsv(206.3, 73.6%, 34.1%)
CMYK73.6%, 32.2%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,522,519
CSS custom property--colour: #173B57;

Brightness & contrast

Relative luminance0.03998WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.67:1
Contrast with white11.67:1WCAG normal text: AAA
Contrast with black1.8:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#E8C4A8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2E3C58no red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#263656no green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#004245no blue cones; rare, and affects men and women equally; ΔE 19.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.67:1WCAG large text: AAA
Contrast with black, large text1.8:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.7Dim grey · ΔE 29.4Slate grey · ΔE 30.9Steel blue · ΔE 31.1Black · ΔE 31.5Light slate grey · ΔE 33.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.7, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#573317
Analogous#175753, #171B57
Triadic#57173B, #3B5717
Split complementary#57171B, #575317
Tetradic#531757, #573317, #1B5717

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#64A4D6
Lighter +30%#3C8CCB
Lighter +20%#2C72A8
Lighter +10%#22567F
Darker −10%#0C202F
Darker −20%#020406
Darker −30%#000000
Darker −40%#000000
More saturated +25%#093D65
Less saturated −25%#253949

Channel breakdown

R23
G59
B87
Red23 (9%)
Green59 (23.1%)
Blue87 (34.1%)
Hue206.25°
Saturation (HSL)58.18%
Lightness21.57%
Dominant channelBlue
Hex per channelR 17 · G 3B · B 57

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “173b57” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.