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Recognised as Colour

#154C81

  • #154C81
  • Blue
  • Dark
  • Nearest: Steel blue

#154C81 is a blue with RGB values 21, 76, 129 and HSL 209°, 72%, 29%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#154C81#154C81
HEX#154C81
RGBrgb(21, 76, 129)
RGB (0–1)0.0824, 0.298, 0.5059
RGB percentages8.2%, 29.8%, 50.6%
HSLhsl(209.4, 72%, 29.4%)
HSV / HSBhsv(209.4, 83.7%, 50.6%)
CMYK83.7%, 41.1%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,395,841
CSS custom property--colour: #154C81;

Brightness & contrast

Relative luminance0.06913WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.81:1
Contrast with white8.81:1WCAG normal text: AAA
Contrast with black2.38:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#EAB37E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#325083no red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#214680no green cones; the most common form, about 1% of men; ΔE 5.7 from the original
Tritanopia#005960no blue cones; rare, and affects men and women equally; ΔE 33.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.81:1WCAG large text: AAA
Contrast with black, large text2.38:1WCAG large text: Fail

Named colours

Steel blue · ΔE 22.2Dark slateblue · ΔE 24.3Slate grey · ΔE 32.6Cornflower blue · ΔE 34.2Light slate grey · ΔE 34.3Dark slate grey · ΔE 34.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 22.16, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#814A15
Analogous#158180, #151681
Triadic#81154C, #4C8115
Split complementary#811516, #818015
Tetradic#801581, #814A15, #168115

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#79B2E9
Lighter +30%#4D99E2
Lighter +20%#2380D9
Lighter +10%#1C66AD
Darker −10%#0E3255
Darker −20%#071829
Darker −30%#000000
Darker −40%#000000
More saturated +25%#024C94
Less saturated −25%#284C6E

Channel breakdown

R21
G76
B129
Red21 (8.2%)
Green76 (29.8%)
Blue129 (50.6%)
Hue209.44°
Saturation (HSL)72%
Lightness29.41%
Dominant channelBlue
Hex per channelR 15 · G 4C · B 81

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Every value on this page was computed from “154c81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.