Nerdulator> put something in

Recognised as Colour

#255CA4

  • #255CA4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#255CA4 is a blue with RGB values 37, 92, 164 and HSL 214°, 63%, 39%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#255CA4#255CA4
HEX#255CA4
RGBrgb(37, 92, 164)
RGB (0–1)0.1451, 0.3608, 0.6431
RGB percentages14.5%, 36.1%, 64.3%
HSLhsl(214, 63.2%, 39.4%)
HSV / HSBhsv(214, 77.4%, 64.3%)
CMYK77.4%, 43.9%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,448,548
CSS custom property--colour: #255CA4;

Brightness & contrast

Relative luminance0.10728WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.68:1
Contrast with white6.68:1WCAG normal text: AA
Contrast with black3.15:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#DAA35B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3862A7no red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#2057A3no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#006D78no blue cones; rare, and affects men and women equally; ΔE 42.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.68:1WCAG large text: AAA
Contrast with black, large text3.15:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19.8Steel blue · ΔE 21.7Cornflower blue · ΔE 23.4Dodgerblue · ΔE 28.1Royal blue · ΔE 29.2Slate blue · ΔE 31.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A46D25
Analogous#259CA4, #2E25A4
Triadic#A4255C, #5CA425
Split complementary#A42E25, #9CA425
Tetradic#A4259C, #A46D25, #25A42E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9C6EC
Lighter +30%#80AAE2
Lighter +20%#568FD9
Lighter +10%#2E73CE
Darker −10%#1C457A
Darker −20%#122D51
Darker −30%#091627
Darker −40%#000000
More saturated +25%#0C59BD
Less saturated −25%#3E5F8B

Channel breakdown

R37
G92
B164
Red37 (14.5%)
Green92 (36.1%)
Blue164 (64.3%)
Hue214.02°
Saturation (HSL)63.18%
Lightness39.41%
Dominant channelBlue
Hex per channelR 25 · G 5C · B A4

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 “255ca4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.