Nerdulator> put something in

Recognised as Colour

#0057FB

  • #0057FB
  • Blue
  • Dark
  • Nearest: Medium slateblue

#0057FB is a blue with RGB values 0, 87, 251 and HSL 219°, 100%, 49%. 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

#0057FB#0057FB
HEX#0057FB
RGBrgb(0, 87, 251)
RGB (0–1)0, 0.3412, 0.9843
RGB percentages0%, 34.1%, 98.4%
HSLhsl(219.2, 100%, 49.2%)
HSV / HSBhsv(219.2, 100%, 98.4%)
CMYK100%, 65.3%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer22,523
CSS custom property--colour: #0057FB;

Brightness & contrast

Relative luminance0.13781WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.59:1
Contrast with white5.59:1WCAG normal text: AA
Contrast with black3.76:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#FFA804

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0073FFno red cones; affects about 1% of men; ΔE 20.3 from the original
Deuteranopia#005DF8no green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#0084A2no blue cones; rare, and affects men and women equally; ΔE 88.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.59:1WCAG large text: AAA
Contrast with black, large text3.76:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 22.6Royal blue · ΔE 27.3Blue violet · ΔE 29.2Slate blue · ΔE 29.5Medium blue · ΔE 31Dark orchid · ΔE 34.3
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 22.59, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBA400
Analogous#00D4FB, #2700FB
Triadic#FB0057, #57FB00
Split complementary#FB2600, #D5FB00
Tetradic#FB00D4, #FBA400, #00FB26

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8DBFF
Lighter +30%#95BAFF
Lighter +20%#6298FF
Lighter +10%#2F77FF
Darker −10%#0045C8
Darker −20%#003495
Darker −30%#002262
Darker −40%#00102F
More saturated +25%#0057FB
Less saturated −25%#1F61DC

Channel breakdown

R0
G87
B251
Red0 (0%)
Green87 (34.1%)
Blue251 (98.4%)
Hue219.2°
Saturation (HSL)100%
Lightness49.22%
Dominant channelBlue
Hex per channelR 00 · G 57 · 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 “0057fb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.