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Recognised as Colour

#2159A3

  • #2159A3
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2159A3 is a blue with RGB values 33, 89, 163 and HSL 214°, 66%, 38%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2159A3#2159A3
HEX#2159A3
RGBrgb(33, 89, 163)
RGB (0–1)0.1294, 0.349, 0.6392
RGB percentages12.9%, 34.9%, 63.9%
HSLhsl(214.2, 66.3%, 38.4%)
HSV / HSBhsv(214.2, 79.8%, 63.9%)
CMYK79.8%, 45.4%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,185,635
CSS custom property--colour: #2159A3;

Brightness & contrast

Relative luminance0.10112WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.95:1
Contrast with white6.95:1WCAG normal text: AA
Contrast with black3.02:1WCAG normal text: Fail
Greyscale equivalent#525252
Inverted#DEA65C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3260A6no red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#1654A2no green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#006B76no blue cones; rare, and affects men and women equally; ΔE 44.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.95:1WCAG large text: AAA
Contrast with black, large text3.02:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 18.5Steel blue · ΔE 23.6Cornflower blue · ΔE 24.2Royal blue · ΔE 28.1Dodgerblue · ΔE 28.1Slate blue · ΔE 30.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.49, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A36B21
Analogous#219AA3, #2A21A3
Triadic#A32159, #59A321
Split complementary#A32A21, #9AA321
Tetradic#A3219A, #A36B21, #21A32A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4C3EC
Lighter +30%#79A7E4
Lighter +20%#4F8BDB
Lighter +10%#2A70CD
Darker −10%#184279
Darker −20%#102B4E
Darker −30%#071424
Darker −40%#000000
More saturated +25%#0856BB
Less saturated −25%#3A5C8B

Channel breakdown

R33
G89
B163
Red33 (12.9%)
Green89 (34.9%)
Blue163 (63.9%)
Hue214.15°
Saturation (HSL)66.33%
Lightness38.43%
Dominant channelBlue
Hex per channelR 21 · G 59 · B A3

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Every value on this page was computed from “2159a3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.