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Recognised as Colour

#154B9F

  • #154B9F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#154B9F is a blue with RGB values 21, 75, 159 and HSL 217°, 77%, 35%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#154B9F#154B9F
HEX#154B9F
RGBrgb(21, 75, 159)
RGB (0–1)0.0824, 0.2941, 0.6235
RGB percentages8.2%, 29.4%, 62.4%
HSLhsl(216.5, 76.7%, 35.3%)
HSV / HSBhsv(216.5, 86.8%, 62.4%)
CMYK86.8%, 52.8%, 0%, 37.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,395,615
CSS custom property--colour: #154B9F;

Brightness & contrast

Relative luminance0.07695WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.27:1
Contrast with white8.27:1WCAG normal text: AAA
Contrast with black2.54:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#EAB460

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0D55A2no red cones; affects about 1% of men; ΔE 7.4 from the original
Deuteranopia#00499Dno green cones; the most common form, about 1% of men; ΔE 1.4 from the original
Tritanopia#00606Dno blue cones; rare, and affects men and women equally; ΔE 50.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.27:1WCAG large text: AAA
Contrast with black, large text2.54:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.3Royal blue · ΔE 23.2Midnight blue · ΔE 23.6Slate blue · ΔE 24.6Rebecca purple · ΔE 27.2Cornflower blue · ΔE 29.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9F6915
Analogous#15909F, #24159F
Triadic#9F154B, #4B9F15
Split complementary#9F2415, #909F15
Tetradic#9F1590, #9F6915, #159F24

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90B6F0
Lighter +30%#6398EA
Lighter +20%#367AE4
Lighter +10%#1B60CC
Darker −10%#0F3672
Darker −20%#092145
Darker −30%#030B18
Darker −40%#000000
More saturated +25%#0046B4
Less saturated −25%#2C5089

Channel breakdown

R21
G75
B159
Red21 (8.2%)
Green75 (29.4%)
Blue159 (62.4%)
Hue216.52°
Saturation (HSL)76.67%
Lightness35.29%
Dominant channelBlue
Hex per channelR 15 · G 4B · B 9F

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Every value on this page was computed from “154b9f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.