Nerdulator> put something in

Recognised as Colour

#2555FB

  • #2555FB
  • Blue
  • Dark
  • Nearest: Medium slateblue

#2555FB is a blue with RGB values 37, 85, 251 and HSL 227°, 96%, 56%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#2555FB#2555FB
HEX#2555FB
RGBrgb(37, 85, 251)
RGB (0–1)0.1451, 0.3333, 0.9843
RGB percentages14.5%, 33.3%, 98.4%
HSLhsl(226.5, 96.4%, 56.5%)
HSV / HSBhsv(226.5, 85.3%, 98.4%)
CMYK85.3%, 66.1%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,446,843
CSS custom property--colour: #2555FB;

Brightness & contrast

Relative luminance0.13855WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.57:1
Contrast with white5.57:1WCAG normal text: AA
Contrast with black3.77:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#DAAA04

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0072FFno red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#005EF8no green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#0083A1no blue cones; rare, and affects men and women equally; ΔE 89.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.57:1WCAG large text: AAA
Contrast with black, large text3.77:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 22.7Blue violet · ΔE 26.9Royal blue · ΔE 28.7Medium blue · ΔE 29.3Slate blue · ΔE 29.9Dark orchid · ΔE 32.6
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 22.72, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBCB25
Analogous#25C0FB, #6025FB
Triadic#FB2555, #55FB25
Split complementary#FB6025, #C0FB25
Tetradic#FB25C0, #FBCB25, #25FB60

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDF1FF
Lighter +30%#BBCAFE
Lighter +20%#89A3FD
Lighter +10%#577CFC
Darker −10%#0438E9
Darker −20%#032CB7
Darker −30%#022085
Darker −40%#021452
More saturated +25%#2153FF
Less saturated −25%#4164DF

Channel breakdown

R37
G85
B251
Red37 (14.5%)
Green85 (33.3%)
Blue251 (98.4%)
Hue226.54°
Saturation (HSL)96.4%
Lightness56.47%
Dominant channelBlue
Hex per channelR 25 · G 55 · B FB

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 “2555fb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.