Nerdulator> put something in

Recognised as Colour

#155EE3

  • #155EE3
  • Blue
  • Dark
  • Nearest: Royal blue

#155EE3 is a blue with RGB values 21, 94, 227 and HSL 219°, 83%, 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 Royal blue.

Colour values

#155EE3#155EE3
HEX#155EE3
RGBrgb(21, 94, 227)
RGB (0–1)0.0824, 0.3686, 0.8902
RGB percentages8.2%, 36.9%, 89%
HSLhsl(218.7, 83.1%, 48.6%)
HSV / HSBhsv(218.7, 90.7%, 89%)
CMYK90.7%, 58.6%, 0%, 11%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,400,547
CSS custom property--colour: #155EE3;

Brightness & contrast

Relative luminance0.13711WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.61:1
Contrast with white5.61:1WCAG normal text: AA
Contrast with black3.74:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#EAA11C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0071E7no red cones; affects about 1% of men; ΔE 13.9 from the original
Deuteranopia#005FE0no green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#008097no blue cones; rare, and affects men and women equally; ΔE 73.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.61:1WCAG large text: AAA
Contrast with black, large text3.74:1WCAG large text: AA

Named colours

Royal blue · ΔE 9.6Medium slateblue · ΔE 15.6Slate blue · ΔE 16.4Medium purple · ΔE 26.3Dodgerblue · ΔE 27.3Rebecca purple · ΔE 30.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.57, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E39A15
Analogous#15C5E3, #3315E3
Triadic#E3155E, #5EE315
Split complementary#E33315, #C5E315
Tetradic#E315C5, #E39A15, #15E333

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CADBFA
Lighter +30%#9BBBF6
Lighter +20%#6D9CF1
Lighter +10%#3E7CED
Darker −10%#114BB4
Darker −20%#0C3786
Darker −30%#082457
Darker −40%#041128
More saturated +25%#0058F8
Less saturated −25%#3467C4

Channel breakdown

R21
G94
B227
Red21 (8.2%)
Green94 (36.9%)
Blue227 (89%)
Hue218.74°
Saturation (HSL)83.06%
Lightness48.63%
Dominant channelBlue
Hex per channelR 15 · G 5E · B E3

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 “155ee3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.