Nerdulator> put something in

Recognised as Colour

#577FAC

  • #577FAC
  • Blue
  • Dark
  • Nearest: Steel blue

#577FAC is a blue with RGB values 87, 127, 172 and HSL 212°, 34%, 51%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#577FAC#577FAC
HEX#577FAC
RGBrgb(87, 127, 172)
RGB (0–1)0.3412, 0.498, 0.6745
RGB percentages34.1%, 49.8%, 67.5%
HSLhsl(211.8, 33.9%, 50.8%)
HSV / HSBhsv(211.8, 49.4%, 67.5%)
CMYK49.4%, 26.2%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,734,316
CSS custom property--colour: #577FAC;

Brightness & contrast

Relative luminance0.20184WCAG 2.x, 0 is black and 1 is white
Perceived brightness122.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.04:1
Contrast with white4.17:1WCAG normal text: Fail
Contrast with black5.04:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#A88053

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D81AEno red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#6378ABno green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#30898Eno blue cones; rare, and affects men and women equally; ΔE 29.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.17:1WCAG large text: AA
Contrast with black, large text5.04:1WCAG large text: AAA

Named colours

Steel blue · ΔE 5Light slate grey · ΔE 17.5Slate grey · ΔE 17.7Cornflower blue · ΔE 25.6Gray · ΔE 28.2Dim grey · ΔE 29.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 5, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AC8457
Analogous#57AAAC, #5957AC
Triadic#AC577F, #7FAC57
Split complementary#AC5957, #AAAC57
Tetradic#AC57AA, #AC8457, #57AC59

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E0E7EF
Lighter +30%#BDCDDF
Lighter +20%#9BB3CE
Lighter +10%#7999BD
Darker −10%#45668B
Darker −20%#344D69
Darker −30%#233447
Darker −40%#121B25
More saturated +25%#387DCB
Less saturated −25%#76818D

Channel breakdown

R87
G127
B172
Red87 (34.1%)
Green127 (49.8%)
Blue172 (67.5%)
Hue211.76°
Saturation (HSL)33.86%
Lightness50.78%
Dominant channelBlue
Hex per channelR 57 · G 7F · B AC

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 “577fac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.