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Recognised as Colour

#155B93

  • #155B93
  • Blue
  • Dark
  • Nearest: Steel blue

#155B93 is a blue with RGB values 21, 91, 147 and HSL 207°, 75%, 33%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#155B93#155B93
HEX#155B93
RGBrgb(21, 91, 147)
RGB (0–1)0.0824, 0.3569, 0.5765
RGB percentages8.2%, 35.7%, 57.6%
HSLhsl(206.7, 75%, 32.9%)
HSV / HSBhsv(206.7, 85.7%, 57.6%)
CMYK85.7%, 38.1%, 0%, 42.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,399,699
CSS custom property--colour: #155B93;

Brightness & contrast

Relative luminance0.09748WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.12:1
Contrast with white7.12:1WCAG normal text: AAA
Contrast with black2.95:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#EAA46C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#405E95no red cones; affects about 1% of men; ΔE 7 from the original
Deuteranopia#2D5392no green cones; the most common form, about 1% of men; ΔE 8.4 from the original
Tritanopia#006970no blue cones; rare, and affects men and women equally; ΔE 34.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.12:1WCAG large text: AAA
Contrast with black, large text2.95:1WCAG large text: Fail

Named colours

Steel blue · ΔE 16.3Dark slateblue · ΔE 27Cornflower blue · ΔE 29Slate grey · ΔE 30.4Light slate grey · ΔE 31.6Dark slate grey · ΔE 35.6
Nearest named CSS colourSteel blue (#4682B4)ΔE 16.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#934D15
Analogous#15938C, #151C93
Triadic#93155B, #5B9315
Split complementary#93151C, #938C15
Tetradic#8C1593, #934D15, #1C9315

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#86C0EE
Lighter +30%#5AA8E7
Lighter +20%#2D91E1
Lighter +10%#1B77C0
Darker −10%#0F3F66
Darker −20%#08243A
Darker −30%#02080D
Darker −40%#000000
More saturated +25%#005DA8
Less saturated −25%#2A597E

Channel breakdown

R21
G91
B147
Red21 (8.2%)
Green91 (35.7%)
Blue147 (57.6%)
Hue206.67°
Saturation (HSL)75%
Lightness32.94%
Dominant channelBlue
Hex per channelR 15 · G 5B · B 93

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Every value on this page was computed from “155b93” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.