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Recognised as Colour

#15699D

  • #15699D
  • Blue
  • Dark
  • Nearest: Steel blue

#15699D is a blue with RGB values 21, 105, 157 and HSL 203°, 76%, 35%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#15699D#15699D
HEX#15699D
RGBrgb(21, 105, 157)
RGB (0–1)0.0824, 0.4118, 0.6157
RGB percentages8.2%, 41.2%, 61.6%
HSLhsl(202.9, 76.4%, 34.9%)
HSV / HSBhsv(202.9, 86.6%, 61.6%)
CMYK86.6%, 33.1%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,403,293
CSS custom property--colour: #15699D;

Brightness & contrast

Relative luminance0.12697WCAG 2.x, 0 is black and 1 is white
Perceived brightness97 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.93:1
Contrast with white5.93:1WCAG normal text: AA
Contrast with black3.54:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#EA9662

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#506A9Fno red cones; affects about 1% of men; ΔE 10.9 from the original
Deuteranopia#3E5E9Cno green cones; the most common form, about 1% of men; ΔE 12.9 from the original
Tritanopia#00767Cno blue cones; rare, and affects men and women equally; ΔE 31.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.93:1WCAG large text: AAA
Contrast with black, large text3.54:1WCAG large text: AA

Named colours

Steel blue · ΔE 10.5Slate grey · ΔE 26.5Light slate grey · ΔE 27.4Cornflower blue · ΔE 28Dark slateblue · ΔE 33.3Dark slate grey · ΔE 33.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 10.5, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9D4915
Analogous#159D8D, #15259D
Triadic#9D1569, #699D15
Split complementary#9D1525, #9D8D15
Tetradic#8D159D, #9D4915, #259D15

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8ECBF0
Lighter +30%#61B6EA
Lighter +20%#34A1E4
Lighter +10%#1B87CA
Darker −10%#0F4B70
Darker −20%#092D43
Darker −30%#030F16
Darker −40%#000000
More saturated +25%#006EB2
Less saturated −25%#2B6487

Channel breakdown

R21
G105
B157
Red21 (8.2%)
Green105 (41.2%)
Blue157 (61.6%)
Hue202.94°
Saturation (HSL)76.4%
Lightness34.9%
Dominant channelBlue
Hex per channelR 15 · G 69 · B 9D

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Every value on this page was computed from “15699d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.