Nerdulator> put something in

Recognised as Colour

#4577CB

  • #4577CB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#4577CB is a blue with RGB values 69, 119, 203 and HSL 218°, 56%, 53%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#4577CB#4577CB
HEX#4577CB
RGBrgb(69, 119, 203)
RGB (0–1)0.2706, 0.4667, 0.7961
RGB percentages27.1%, 46.7%, 79.6%
HSLhsl(217.6, 56.3%, 53.3%)
HSV / HSBhsv(217.6, 66%, 79.6%)
CMYK66%, 41.4%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,552,651
CSS custom property--colour: #4577CB;

Brightness & contrast

Relative luminance0.18771WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.75:1
Contrast with white4.42:1WCAG normal text: Fail
Contrast with black4.75:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#BA8834

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#507FCEno red cones; affects about 1% of men; ΔE 4.5 from the original
Deuteranopia#3C72C9no green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#008A97no blue cones; rare, and affects men and women equally; ΔE 49 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.42:1WCAG large text: AA
Contrast with black, large text4.75:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 11.6Dodgerblue · ΔE 17.3Steel blue · ΔE 21.9Royal blue · ΔE 23.2Dark slateblue · ΔE 26Medium purple · ΔE 27
Nearest named CSS colourCornflower blue (#6495ED)ΔE 11.57, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB9945
Analogous#45BACB, #5645CB
Triadic#CB4577, #77CB45
Split complementary#CB5645, #BACB45
Tetradic#CB45BA, #CB9945, #45CB56

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4ECF8
Lighter +30%#BDCEEC
Lighter +20%#95B1E1
Lighter +10%#6D94D6
Darker −10%#305FAD
Darker −20%#254985
Darker −30%#1A335D
Darker −40%#0F1D35
More saturated +25%#276FE9
Less saturated −25%#637FAD

Channel breakdown

R69
G119
B203
Red69 (27.1%)
Green119 (46.7%)
Blue203 (79.6%)
Hue217.61°
Saturation (HSL)56.3%
Lightness53.33%
Dominant channelBlue
Hex per channelR 45 · G 77 · B CB

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 “4577cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.