Nerdulator> put something in

Recognised as Colour

#578BAA

  • #578BAA
  • Blue
  • Dark
  • Nearest: Steel blue

#578BAA is a blue with RGB values 87, 139, 170 and HSL 202°, 33%, 50%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#578BAA#578BAA
HEX#578BAA
RGBrgb(87, 139, 170)
RGB (0–1)0.3412, 0.5451, 0.6667
RGB percentages34.1%, 54.5%, 66.7%
HSLhsl(202.4, 32.8%, 50.4%)
HSV / HSBhsv(202.4, 48.8%, 66.7%)
CMYK48.8%, 18.2%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,737,386
CSS custom property--colour: #578BAA;

Brightness & contrast

Relative luminance0.23394WCAG 2.x, 0 is black and 1 is white
Perceived brightness130 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.68:1
Contrast with white3.7:1WCAG normal text: Fail
Contrast with black5.68:1WCAG normal text: AA
Greyscale equivalent#828282
Inverted#A87455

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7D8AACno red cones; affects about 1% of men; ΔE 12.2 from the original
Deuteranopia#7181AAno green cones; the most common form, about 1% of men; ΔE 13.1 from the original
Tritanopia#2F9395no blue cones; rare, and affects men and women equally; ΔE 22.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.7:1WCAG large text: AA
Contrast with black, large text5.68:1WCAG large text: AAA

Named colours

Steel blue · ΔE 11.8Light slate grey · ΔE 12.4Slate grey · ΔE 13.2Cadetblue · ΔE 18.9Gray · ΔE 23.5Sky blue · ΔE 24.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 11.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA7657
Analogous#57AA9F, #5762AA
Triadic#AA578B, #8BAA57
Split complementary#AA5762, #AAA057
Tetradic#9F57AA, #AA7657, #61AA57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEE9EF
Lighter +30%#BDD1DD
Lighter +20%#9BBACC
Lighter +10%#79A2BB
Darker −10%#457089
Darker −20%#345467
Darker −30%#233845
Darker −40%#121D23
More saturated +25%#3793CA
Less saturated −25%#77838A

Channel breakdown

R87
G139
B170
Red87 (34.1%)
Green139 (54.5%)
Blue170 (66.7%)
Hue202.41°
Saturation (HSL)32.81%
Lightness50.39%
Dominant channelBlue
Hex per channelR 57 · G 8B · B AA

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 “578baa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.