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Recognised as Colour

#153E8E

  • #153E8E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#153E8E is a blue with RGB values 21, 62, 142 and HSL 220°, 74%, 32%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#153E8E#153E8E
HEX#153E8E
RGBrgb(21, 62, 142)
RGB (0–1)0.0824, 0.2431, 0.5569
RGB percentages8.2%, 24.3%, 55.7%
HSLhsl(219.7, 74.2%, 32%)
HSV / HSBhsv(219.7, 85.2%, 55.7%)
CMYK85.2%, 56.3%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,392,270
CSS custom property--colour: #153E8E;

Brightness & contrast

Relative luminance0.05558WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.95:1
Contrast with white9.95:1WCAG normal text: AAA
Contrast with black2.11:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#EAC171

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004891no red cones; affects about 1% of men; ΔE 8 from the original
Deuteranopia#003D8Cno green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#00525Fno blue cones; rare, and affects men and women equally; ΔE 48.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.95:1WCAG large text: AAA
Contrast with black, large text2.11:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10.5Midnight blue · ΔE 18.6Rebecca purple · ΔE 25.4Slate blue · ΔE 26.7Royal blue · ΔE 27.3Medium purple · ΔE 32.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.52, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E6515
Analogous#157A8E, #29158E
Triadic#8E153E, #3E8E15
Split complementary#8E2915, #7B8E15
Tetradic#8E157A, #8E6515, #158E29

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#82A6ED
Lighter +30%#5687E6
Lighter +20%#2A67DF
Lighter +10%#1C51BA
Darker −10%#0E2B62
Darker −20%#081735
Darker −30%#010409
Darker −40%#000000
More saturated +25%#0137A2
Less saturated −25%#29457A

Channel breakdown

R21
G62
B142
Red21 (8.2%)
Green62 (24.3%)
Blue142 (55.7%)
Hue219.67°
Saturation (HSL)74.23%
Lightness31.96%
Dominant channelBlue
Hex per channelR 15 · G 3E · B 8E

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Every value on this page was computed from “153e8e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.