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Recognised as Colour

#289ADB

  • #289ADB
  • Blue
  • Dark
  • Nearest: Steel blue

#289ADB is a blue with RGB values 40, 154, 219 and HSL 202°, 71%, 51%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#289ADB#289ADB
HEX#289ADB
RGBrgb(40, 154, 219)
RGB (0–1)0.1569, 0.6039, 0.8588
RGB percentages15.7%, 60.4%, 85.9%
HSLhsl(201.8, 71.3%, 50.8%)
HSV / HSBhsv(201.8, 81.7%, 85.9%)
CMYK81.7%, 29.7%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,661,083
CSS custom property--colour: #289ADB;

Brightness & contrast

Relative luminance0.28677WCAG 2.x, 0 is black and 1 is white
Perceived brightness141 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.74:1
Contrast with white3.12:1WCAG normal text: Fail
Contrast with black6.74:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#D76524

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7B9BDEno red cones; affects about 1% of men; ΔE 15.9 from the original
Deuteranopia#638BDAno green cones; the most common form, about 1% of men; ΔE 17.8 from the original
Tritanopia#00AAB1no blue cones; rare, and affects men and women equally; ΔE 37.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.12:1WCAG large text: AA
Contrast with black, large text6.74:1WCAG large text: AAA

Named colours

Steel blue · ΔE 13.2Deep skyblue · ΔE 15.2Cornflower blue · ΔE 19.4Light skyblue · ΔE 23.5Sky blue · ΔE 28.4Dodgerblue · ΔE 28.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 13.2, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DB6928
Analogous#28DBC3, #2840DB
Triadic#DB289A, #9ADB28
Split complementary#DB2840, #DBC328
Tetradic#C328DB, #DB6928, #40DB28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7ECF8
Lighter +30%#ABD8F1
Lighter +20%#7FC3EA
Lighter +10%#54AFE2
Darker −10%#1E7CB2
Darker −20%#175E86
Darker −30%#0F3F5B
Darker −40%#08212F
More saturated +25%#09A3FA
Less saturated −25%#4791BC

Channel breakdown

R40
G154
B219
Red40 (15.7%)
Green154 (60.4%)
Blue219 (85.9%)
Hue201.79°
Saturation (HSL)71.31%
Lightness50.78%
Dominant channelBlue
Hex per channelR 28 · G 9A · B DB

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Every value on this page was computed from “289adb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.