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Recognised as Colour

#2B91FB

  • #2B91FB
  • Blue
  • Dark
  • Nearest: Dodgerblue

#2B91FB is a blue with RGB values 43, 145, 251 and HSL 211°, 96%, 58%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#2B91FB#2B91FB
HEX#2B91FB
RGBrgb(43, 145, 251)
RGB (0–1)0.1686, 0.5686, 0.9843
RGB percentages16.9%, 56.9%, 98.4%
HSLhsl(210.6, 96.3%, 57.6%)
HSV / HSBhsv(210.6, 82.9%, 98.4%)
CMYK82.9%, 42.2%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,855,419
CSS custom property--colour: #2B91FB;

Brightness & contrast

Relative luminance0.27729WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.55:1
Contrast with white3.21:1WCAG normal text: Fail
Contrast with black6.55:1WCAG normal text: AA
Greyscale equivalent#838383
Inverted#D46E04

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B9AFFno red cones; affects about 1% of men; ΔE 6.4 from the original
Deuteranopia#3387F9no green cones; the most common form, about 1% of men; ΔE 7.3 from the original
Tritanopia#00AABAno blue cones; rare, and affects men and women equally; ΔE 57.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.21:1WCAG large text: AA
Contrast with black, large text6.55:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 2.9Cornflower blue · ΔE 11.7Royal blue · ΔE 21.6Medium purple · ΔE 30.4Slate blue · ΔE 31Steel blue · ΔE 32.1
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 2.91, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FB952B
Analogous#2BF9FB, #2D2BFB
Triadic#FB2B91, #91FB2B
Split complementary#FB2D2B, #F9FB2B
Tetradic#FB2BF9, #FB952B, #2BFB2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F3F9FF
Lighter +30%#C1DFFE
Lighter +20%#8FC5FD
Lighter +10%#5DABFC
Darker −10%#0577EE
Darker −20%#045EBC
Darker −30%#03458A
Darker −40%#022C58
More saturated +25%#2791FF
Less saturated −25%#4692E0

Channel breakdown

R43
G145
B251
Red43 (16.9%)
Green145 (56.9%)
Blue251 (98.4%)
Hue210.58°
Saturation (HSL)96.3%
Lightness57.65%
Dominant channelBlue
Hex per channelR 2B · G 91 · B FB

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Every value on this page was computed from “2b91fb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.