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Recognised as Colour

#154EAD

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

#154EAD is a blue with RGB values 21, 78, 173 and HSL 218°, 78%, 38%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#154EAD#154EAD
HEX#154EAD
RGBrgb(21, 78, 173)
RGB (0–1)0.0824, 0.3059, 0.6784
RGB percentages8.2%, 30.6%, 67.8%
HSLhsl(217.5, 78.4%, 38%)
HSV / HSBhsv(217.5, 87.9%, 67.8%)
CMYK87.9%, 54.9%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,396,397
CSS custom property--colour: #154EAD;

Brightness & contrast

Relative luminance0.08625WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.71:1
Contrast with white7.71:1WCAG normal text: AAA
Contrast with black2.73:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#EAB152

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005AB0no red cones; affects about 1% of men; ΔE 9.3 from the original
Deuteranopia#004CABno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#006676no blue cones; rare, and affects men and women equally; ΔE 55.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.71:1WCAG large text: AAA
Contrast with black, large text2.73:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.7Royal blue · ΔE 17.2Slate blue · ΔE 19.4Midnight blue · ΔE 23.7Rebecca purple · ΔE 24.9Medium purple · ΔE 26.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.66, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD7415
Analogous#159AAD, #2815AD
Triadic#AD154E, #4EAD15
Split complementary#AD2815, #9AAD15
Tetradic#AD159A, #AD7415, #15AD28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9BBCF3
Lighter +30%#6E9EED
Lighter +20%#407FE8
Lighter +10%#1B63DA
Darker −10%#0F3980
Darker −20%#0A2552
Darker −30%#041025
Darker −40%#000000
More saturated +25%#0049C2
Less saturated −25%#2D5495

Channel breakdown

R21
G78
B173
Red21 (8.2%)
Green78 (30.6%)
Blue173 (67.8%)
Hue217.5°
Saturation (HSL)78.35%
Lightness38.04%
Dominant channelBlue
Hex per channelR 15 · G 4E · B AD

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