Nerdulator> put something in

Recognised as Colour

#404F58

  • #404F58
  • Blue
  • Dark
  • Nearest: Dark slate grey

#404F58 is a blue with RGB values 64, 79, 88 and HSL 203°, 16%, 30%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#404F58#404F58
HEX#404F58
RGBrgb(64, 79, 88)
RGB (0–1)0.251, 0.3098, 0.3451
RGB percentages25.1%, 31%, 34.5%
HSLhsl(202.5, 15.8%, 29.8%)
HSV / HSBhsv(202.5, 27.3%, 34.5%)
CMYK27.3%, 10.2%, 0%, 65.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,214,616
CSS custom property--colour: #404F58;

Brightness & contrast

Relative luminance0.07387WCAG 2.x, 0 is black and 1 is white
Perceived brightness76 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.48:1
Contrast with white8.48:1WCAG normal text: AAA
Contrast with black2.48:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#BFB0A7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4B4E58no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#474C58no green cones; the most common form, about 1% of men; ΔE 4.5 from the original
Tritanopia#395152no blue cones; rare, and affects men and women equally; ΔE 6.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.48:1WCAG large text: AAA
Contrast with black, large text2.48:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9Dim grey · ΔE 14.2Slate grey · ΔE 20.5Gray · ΔE 22.4Light slate grey · ΔE 23.6Teal · ΔE 29.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.01, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#584940
Analogous#405855, #404358
Triadic#58404F, #4F5840
Split complementary#584043, #585540
Tetradic#554058, #584940, #435840

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A6B5BE
Lighter +30%#889DA9
Lighter +20%#6B8493
Lighter +10%#556A76
Darker −10%#2B343A
Darker −20%#151A1D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2D546B
Less saturated −25%#4C4C4C

Channel breakdown

R64
G79
B88
Red64 (25.1%)
Green79 (31%)
Blue88 (34.5%)
Hue202.5°
Saturation (HSL)15.79%
Lightness29.8%
Dominant channelBlue
Hex per channelR 40 · G 4F · B 58

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 “404f58” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.