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Colour

#091BDD

  • #091BDD
  • Blue
  • Dark
  • Nearest: Medium blue

#091BDD is a blue with RGB values 9, 27, 221 and HSL 235°, 92%, 45%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#091BDD#091BDD
HEX#091BDD
RGBrgb(9, 27, 221)
RGB (0–1)0.0353, 0.1059, 0.8667
RGB percentages3.5%, 10.6%, 86.7%
HSLhsl(234.9, 92.2%, 45.1%)
HSV / HSBhsv(234.9, 95.9%, 86.7%)
CMYK95.9%, 87.8%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer596,957
CSS custom property--colour: #091BDD;

Brightness & contrast

Relative luminance0.06062WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.49:1
Contrast with white9.49:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#F6E422

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0050E2no red cones; affects about 1% of men; ΔE 31.9 from the original
Deuteranopia#003ADAno green cones; the most common form, about 1% of men; ΔE 19 from the original
Tritanopia#006083no blue cones; rare, and affects men and women equally; ΔE 101 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.49:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Medium blue · ΔE 5.4Blue · ΔE 20.8Blue violet · ΔE 22.8Dark violet · ΔE 27.4Dark blue · ΔE 32Dark orchid · ΔE 35.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 5.41, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DDCB09
Analogous#0985DD, #6109DD
Triadic#DD091B, #1BDD09
Split complementary#DD6109, #85DD09
Tetradic#DD0985, #DDCB09, #09DD61

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B6BCFC
Lighter +30%#858FFA
Lighter +20%#5462F8
Lighter +10%#2335F6
Darker −10%#0715AC
Darker −20%#050F7B
Darker −30%#03094A
Darker −40%#010319
More saturated +25%#0014E6
Less saturated −25%#2633C0

Channel breakdown

R9
G27
B221
Red9 (3.5%)
Green27 (10.6%)
Blue221 (86.7%)
Hue234.91°
Saturation (HSL)92.17%
Lightness45.1%
Dominant channelBlue
Hex per channelR 09 · G 1B · B DD

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Every value on this page was computed from “091bdd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.